21 July 2026 - Added connection: Wine and viticulture --> Siphon - Added connection: Wine and viticulture --> Germ theory - Added connection: Malting --> Enzyme - Added connection: Charcoal --> Crucible steel - Added connection: Electric generator --> Electric arc furnace - Added connection: White phosphorus match --> Electric arc furnace - Added connection: Reverberatory furnace --> Electric arc furnace - Added connection: Phosphorus --> Electric arc furnace - Added connection: Steam turbine --> Gas turbine - Added connection: Internal combustion engine --> Gas turbine - Added connection: Gas turbine --> Turbojet - Added connection: Superalloy --> Turbofan - Added connection: Turbojet --> Turbofan - Added connection: Airplane --> Turbojet - Added connection: Water-powered blast furnace --> Air compressor - Added connection: Crank with connecting rod --> Air compressor - Added connection: Air compressor --> Pneumatic drill - Added connection: Air compressor --> Self-propelled torpedo - Added connection: Force pump --> Air compressor - Added connection: Air compressor --> Vapor-compression refrigeration system - Added connection: Air compressor --> Mechanized submarine 20 July 2026 - Added tech: All-metal monoplane - Added tech: Crucible steel (modern) - Added tech: Cementation steel - Added connection: Puddling --> Bessemer process - Added connection: Crucible steel (modern) --> Siderography and steel engraving - Added connection: Airplane --> All-metal monoplane - Added connection: Electrical steel --> All-metal monoplane - Added connection: Age-hardening alloy --> All-metal monoplane - Added connection: All-metal monoplane --> Jet aircraft - Added connection: All-metal monoplane --> Pressurized aircraft cabin - Added connection: Silicon --> Electrical steel - Added connection: Siemens–Martin process --> Electrical steel - Added connection: Siemens–Martin process --> Mangalloy - Added connection: Electric arc steel furnace --> Stainless steel - Added connection: Iron smelting and wrought iron --> Slide-rest all-metal lathe - Added connection: Tungsten --> Tool steel and air-hardening steel - Added connection: Manganese --> Tool steel and air-hardening steel - Added connection: Crucible steel (modern) --> Tool steel and air-hardening steel - Added connection: Crucible --> Crucible steel (modern) - Added connection: Crucible steel <--> Crucible steel (modern) - Added connection: Mainspring --> Crucible steel (modern) - Added connection: Coke (Europe) --> Crucible steel (modern) - Added connection: Iron smelting and wrought iron --> Cementation steel - Added connection: Charcoal --> Cementation steel - Added connection: Cementation steel --> Crucible steel (modern) 19 July 2026 - Added connection: Aluminium --> Age-hardening alloy - Added connection: Age-hardening alloy --> Superalloy - Added connection: Copper smelting --> Age-hardening alloy - Added connection: Stainless steel --> Turbojet - Added connection: Age-hardening alloy --> Turbojet 18 July 2026 - Added tech: Superalloy - Added tech: Age-hardening alloy - Added connection: Nichrome heating element --> Superalloy - Added connection: Titanium --> Superalloy - Added connection: Aluminium --> Superalloy 17 July 2026 - Added tech: Rhodium - Added tech: Iridium - Added tech: Osmium - Added tech: Fusible alloy - Added connection: Platinum --> Palladium - Added connection: Aqua regia --> Palladium - Added connection: Platinum --> Rhodium - Added connection: Aqua regia --> Rhodium - Added connection: Zirconium --> Hafnium - Added connection: Hafnium --> Nuclear submarine - Added connection: Zirconium --> Nuclear submarine - Added connection: Writing (Egypt) --> Birch bark manuscript - Added connection: Bismuth --> Fusible alloy - Added connection: Fusible alloy --> Automatic fire sprinkler - Added connection: Lead --> Fusible alloy - Added connection: Tin --> Fusible alloy - Added connection: Iridium <--> Osmium - Added connection: Platinum --> Iridium - Added connection: Aqua regia --> Iridium - Added connection: Platinum --> Osmium - Added connection: Aqua regia --> Osmium 16 July 2026 - Added tech: Solid electrolytic capacitor - Added tech: Sintered technical ceramic - Added tech: Hafnium - Added tech: Spark plug - Added tech: Stapler - Added tech: Powder metallurgy - Added tech: Tantalum - Added tech: Palladium - Added connection: Niobium <--> Tantalum - Added connection: Drawn wire and draw plate --> Stapler - Added connection: Paper machine --> Stapler - Added connection: Manganese --> Solid electrolytic capacitor - Added connection: Tantalum --> Solid electrolytic capacitor - Added connection: Electrolytic capacitor --> Solid electrolytic capacitor - Added connection: Transistor --> Solid electrolytic capacitor - Added connection: Dispersive prism and color spectrum --> Camera lucida - Added connection: Platinum --> Powder metallurgy - Added connection: Powder metallurgy --> Tungsten filament - Added connection: Powder metallurgy --> Selective laser sintering - Added connection: Ignition magneto --> Spark plug - Added connection: Four-stroke engine --> Spark plug - Added connection: Platinum --> Spark plug - Added connection: Spark plug --> Sintered technical ceramic - Added connection: Bayer process --> Sintered technical ceramic - Added connection: Ceramic --> Sintered technical ceramic - Added connection: Sodium hydroxide --> Bayer process - Added connection: Hall–Héroult process --> Bayer process - Added connection: Bayer process --> Synthetic gemstone - Added connection: Graphite --> Synthetic diamond - Added connection: Powder metallurgy --> Solid electrolytic capacitor 15 July 2026 - Added tech: Laparoscope - Added connection: Greek fire --> Composite rocket propellant - Added connection: Bitumen --> Composite rocket propellant - Added connection: Congreve rocket --> Composite rocket propellant - Added connection: Gunpowder --> Composite rocket propellant - Added connection: Composite rocket propellant --> Ballistic missile submarine - Added connection: Composite rocket propellant --> Reusable spacecraft - Added connection: Composite rocket propellant --> Surface-to-air missile - Added connection: Petroleum as fuel --> Greek fire - Added connection: Force pump --> Greek fire - Added connection: Distillation --> Greek fire - Added connection: Irrigation --> Archimedes' screw - Added connection: Silver mirror --> Endoscope - Added connection: Argand lamp --> Endoscope - Added connection: Endoscope --> Laparoscope - Added connection: Endoscope --> Capsule endoscopy - Added connection: Laparoscope --> Surgical robot - Added connection: Light bulb --> Laparoscope 14 July 2026 - Added tech: Composite rocket propellant - Added tech: Armor-piercing ammunition - Added tech: Rifled artillery - Added connection: Ironclad --> Armor-piercing ammunition - Added connection: Cast iron --> Armor-piercing ammunition - Added connection: Rifled artillery --> Armor-piercing ammunition - Added connection: Rifled artillery --> Built-up gun - Added connection: Breech-loading swivel gun --> Rifled artillery - Added connection: Rifling --> Rifled artillery - Added connection: Rifled artillery --> Trench system - Added connection: Rifled artillery --> Long-recoil field gun - Added connection: Iron smelting and wrought iron --> Built-up gun - Added connection: Slide-rest all-metal lathe --> Rifled artillery - Added connection: Cannon --> Rifled artillery 13 July 2026 - Added tech: Silencer (gun) - Added tech: Muffler - Added connection: Muffler <--> Silencer (gun) - Added connection: Motorcycle --> Muffler - Added connection: Bolt-action rifle --> Silencer (gun) - Added connection: Volley gun --> Gatling gun - Added connection: Gatling gun <--> Mitrailleuse - Added connection: Integrated cartridge --> Mitrailleuse - Added connection: Paper cartridge --> Gatling gun - Added connection: Percussion cap --> Gatling gun 12 July 2026 - Added connection: Gas-operated firearm --> Self-loading rifle - Added connection: Bolt-action rifle --> Self-loading rifle - Added connection: Magazine repeating rifle --> Self-loading rifle - Added connection: Smokeless powder cartridge --> Self-loading rifle - Added connection: Automatic machine gun --> Gas-operated firearm - Added connection: Rimfire ammunition --> Magazine repeating rifle - Added connection: Breech-loading rifle --> Magazine repeating rifle - Added connection: True flintlock --> Breech-loading rifle - Added connection: Rifling --> Breech-loading rifle - Added connection: Self-loading rifle --> Assault rifle - Added connection: Submachine gun --> Assault rifle - Added connection: Percussion cap --> Rifled musket 11 July 2026 - Added connection: Trench system --> Submachine gun - Added connection: Automatic machine gun --> Submachine gun - Added connection: Semi-automatic pistol --> Submachine gun - Added connection: Colt revolver --> Semi-automatic pistol 10 July 2026 - Added tech: Man-portable anti-tank weapon - Added tech: Shaped charge - Added tech: Submachine gun - Added tech: Self-loading rifle - Added tech: Gas-operated firearm - Added connection: Shaped charge --> Man-portable anti-tank weapon - Added connection: TNT --> Shaped charge - Added connection: Tank --> Shaped charge - Added connection: Congreve rocket --> Man-portable anti-tank weapon - Added connection: Smokeless gunpowder --> Man-portable anti-tank weapon - Added connection: Breech-loading rifle --> Bolt-action rifle - Added connection: Integrated cartridge --> Bolt-action rifle - Added connection: Percussion cap --> Bolt-action rifle 9 July 2026 - Added tech: Breech-loading swivel gun - Added connection: Cannon --> Breech-loading swivel gun - Added connection: Breech-loading swivel gun --> Breech-loading rifle 8 July 2026 - Added tech: Assault rifle - Added tech: Magazine repeating rifle - Added tech: Breech-loading rifle 7 July 2026 - Added tech: Iron girder bridge - Added connection: Rail transport --> Iron girder bridge - Added connection: Iron bridge --> Iron girder bridge - Added connection: Puddling --> Iron girder bridge - Added connection: Copper smelting --> Coke smelting of iron (Europe) - Added connection: Iron smelting and wrought iron --> Coke and coke smelting of iron (China) - Added connection: Iron smelting and wrought iron --> Coke smelting of iron (Europe) - Added connection: Puddling --> Cantilever bridge - Added connection: Iron bridge --> Cantilever bridge 6 July 2026 - Added tech: Steel-cable suspension bridge - Added connection: Wire-cable suspension bridge --> Steel-cable suspension bridge - Added connection: Bessemer process --> Steel-cable suspension bridge - Added connection: Nitric acid --> Parkesine - Added connection: Wire rope --> Steel-cable suspension bridge - Added connection: Steel-cable suspension bridge --> Cable-stayed bridge 5 July 2026 - Added tech: Cable-stayed bridge - Added tech: Distilled spirit - Added tech: Wine and viticulture - Added connection: Honey hunting --> Beekeeping - Added connection: Malting --> Alcohol - Added connection: Alcohol --> Wine and viticulture - Added connection: Alcohol --> Vinegar - Added connection: Wine and viticulture --> Winepress - Added connection: Pottery --> Distillation - Added connection: Wine and viticulture --> Distilled spirit - Added connection: Alembic --> Distilled spirit - Added connection: Distilled spirit --> Alcohol thermometer - Added connection: Distilled spirit --> Ether 4 July 2026 - Added tech: Iron bridge - Added tech: Coke smelting of iron (Europe) - Added tech: Coke (Europe) - Added tech: Pontoon bridge - Added tech: Malting - Added connection: Coke (Europe) --> Silicon carbide - Added connection: Coke (Europe) --> Acheson process - Added connection: Coke (Europe) --> Calcium carbide production - Added connection: Boat --> Pontoon bridge - Added connection: Rope and twine --> Pontoon bridge - Added connection: Percussion flake tool --> Raft - Added connection: Cast iron --> Iron bridge - Added connection: True arch bridge --> Iron bridge - Added connection: Iron bridge --> Iron-framed building - Added connection: Coke and coke smelting of iron (China) <--> Coke (Europe) - Added connection: Coke and coke smelting of iron (China) <--> Coke smelting of iron (Europe) - Added connection: Coke (Europe) --> Coal tar - Added connection: Coal mining --> Coke (Europe) - Added connection: Coke (Europe) --> Coke smelting of iron (Europe) - Added connection: Charcoal --> Coke (Europe) - Added connection: Coke smelting of iron (Europe) --> Iron bridge - Added connection: Coke smelting of iron (Europe) --> Iron-framed building - Added connection: Blast furnace --> Coke smelting of iron (Europe) - Added connection: Blast furnace --> Coke and coke smelting of iron (China) - Added connection: Coal mining --> Coke and coke smelting of iron (China) - Added connection: Malting --> Coke (Europe) - Added connection: Pottery --> Alcohol 3 July 2026 - Added tech: Arched aqueduct bridge - Added tech: Qanat - Added tech: Water well - Added connection: Qanat --> Yakhchāl - Added connection: Water well --> Qanat - Added connection: Water well --> Rock-cut stepwell - Added connection: Water well --> Borehole drilling - Added connection: Percussion flake tool --> Mining - Added connection: Digging stick --> Water well - Added connection: Concrete --> Roman concrete - Added connection: Corbel arch --> Aqueduct - Added connection: True arch bridge --> Arched aqueduct bridge - Added connection: Aqueduct --> Arched aqueduct bridge - Added connection: Roman concrete --> Arched aqueduct bridge 2 July 2026 - Added tech: Wire-cable suspension bridge - Added tech: Suspension bridge - Added tech: Truss bridge - Added tech: Truss - Added connection: Simple suspension bridge --> Suspension bridge - Added connection: Chain --> Suspension bridge - Added connection: Drawn wire and draw plate --> Wire-cable suspension bridge - Added connection: Suspension bridge --> Wire-cable suspension bridge - Added connection: Rope and twine --> Simple suspension bridge - Added connection: Truss --> Truss bridge - Added connection: Truss bridge --> Cantilever bridge - Added connection: Truss bridge --> Suspension bridge - Added connection: Stonemasonry --> Aqueduct - Added connection: Lime mortar and plaster --> Aqueduct 1 July 2026 - Added tech: Innerspring mattress - Added tech: Upholstery coil spring - Added tech: Kayak - Added connection: Bone tool --> Snow goggles - Added connection: Boat --> Kayak - Added connection: Rawhide --> Kayak - Added connection: Rope and twine --> Kayak - Added connection: Upholstery coil spring --> Innerspring mattress - Added connection: Mainspring --> Upholstery coil spring - Added connection: Coach --> Upholstery coil spring - Added connection: Drawn wire and draw plate --> Upholstery coil spring 30 June 2026 - Added tech: Pillbox - Added tech: Long-recoil field gun - Added tech: Trench system - Added tech: Defensive wall - Added tech: Wattle and daub - Added tech: Rawhide - Added connection: Stonemasonry --> Defensive wall - Added connection: Defensive wall --> Castle - Added connection: Castle --> Star fort - Added connection: Cannon --> Star fort - Added connection: Rifled musket --> Trench system - Added connection: Trench system --> Tank - Added connection: Trench system --> Pillbox - Added connection: Reinforced concrete --> Pillbox - Added connection: Automatic machine gun --> Pillbox - Added connection: Automatic machine gun --> Tank - Added connection: Modern barbed wire --> Tank - Added connection: Hand axe --> Throwing stick - Added connection: Smokeless powder cartridge --> Long-recoil field gun - Added connection: Rope and twine --> Travois - Added connection: Hydraulic cylinder --> Long-recoil field gun - Added connection: Saw --> Electric chainsaw - Added connection: Percussion flake tool --> Rawhide - Added connection: Clothing --> Stitching awl - Added connection: Rawhide --> Tanned leather - Added connection: Rawhide --> Clothing - Added connection: Clothing --> Shoe - Added connection: Stitching awl --> Shoe - Added connection: Sandal --> Shoe - Added connection: Weaving and basketry --> Sandal - Added connection: Rawhide --> Drum - Added connection: Rawhide --> Shield - Added connection: Rawhide --> Ox hide bellows - Added connection: Rawhide --> Parchment - Added connection: Tanned leather --> Saddle - Added connection: Rawhide --> Bagpipe - Added connection: Weaving and basketry --> Pottery - Added connection: Weaving and basketry --> Wattle and daub - Added connection: Aulos --> Bagpipe 29 June 2026 - Added tech: Star fort - Added tech: Suction pump - Added tech: Engineered roadbed - Added connection: Paved road --> Engineered roadbed - Added connection: Engineered roadbed --> Macadam - Added connection: Wheel --> Engineered roadbed - Added connection: Asphalt road --> Controlled-access highway - Added connection: Hoe --> Irrigation - Added connection: Irrigation --> Reservoir - Added connection: Stonemasonry --> Reservoir - Added connection: Reservoir --> Rock-cut stepwell - Added connection: Screw press --> Hydraulic press - Added connection: Cotton (New World) --> Cotton gin - Added connection: Force pump --> Suction pump - Added connection: Suction pump --> Vacuum pump - Added connection: Force pump --> Hydraulic press - Added connection: Measuring rod --> Metre 28 June 2026 - Added tech: Asphalt road - Added tech: Macadam - Added connection: Hafting --> Hoe - Added connection: Bone tool --> Hoe - Added connection: Macadam --> Asphalt road - Added connection: Bitumen --> Asphalt road 27 June 2026 - Added connection: Adze --> Rammed earth - Added connection: Stonemasonry --> Paved road 26 June 2026 - Added connection: Burin --> Stamp seal - Added connection: Ground stone tool --> Fish hook 25 June 2026 - Added connection: Carriage odometer --> Surveyor's wheel - Added connection: Crank --> Rotary winnowing fan - Added connection: Domestication of rice --> Rotary winnowing fan - Added connection: Crank with connecting rod --> Internal combustion engine - Added connection: Crank with connecting rod --> Sun and planet gear - Added connection: Crank with connecting rod --> Lockstitch sewing machine - Added connection: Domestication of millet --> Rotary winnowing fan - Added connection: Rotary winnowing fan --> Combine harvester - Added connection: Crank with connecting rod --> High-pressure steam engine - Added connection: Rope and twine --> Sling - Added connection: Rope and twine --> Snowshoe - Added connection: Adze --> Snowshoe 24 June 2026 - Added tech: Surveyor's wheel - Added tech: Carriage odometer - Added tech: Coach - Added connection: Cam --> Odometer (China) - Added connection: Gears --> Mechanical calculator - Added connection: Mortise and tenon --> Wheel - Added connection: Domestication of cattle --> Wheel - Added connection: Horse collar --> Coach - Added connection: Nailed horseshoe --> Coach - Added connection: Coach --> Horse-drawn tram - Added connection: Odometer (Western) --> Carriage odometer - Added connection: Fully mechanical clock --> Carriage odometer - Added connection: Coach --> Carriage odometer - Added connection: Carriage odometer --> Taximeter 23 June 2026 - Added tech: Rotary winnowing fan - Added connection: Gears --> Post windmill - Added connection: Chisel --> Mortise and tenon - Added connection: Chariot --> Odometer (Western) - Added connection: Chariot --> Odometer (China) - Added connection: Gears --> Odometer (Western) - Added connection: Gears --> Odometer (China) 22 June 2026 - Added tech: Sawmill - Added tech: Saw - Added connection: Watermill --> Panemone windmill - Added connection: Watermill --> Post windmill - Added connection: Copper smelting --> Saw - Added connection: Sickle --> Saw - Added connection: Saw --> Sawmill - Added connection: Crank with connecting rod --> Sawmill - Added connection: Watermill --> Sawmill - Added connection: Control of fire --> Spear - Added connection: Hand axe --> Spear - Added connection: Adze --> Skis - Added connection: Bone tool --> Stitching awl 21 June 2026 - Added connection: Animal-driven rotary mill --> Watermill - Added connection: Watermill --> Automatic flour mill 20 June 2026 - Added connection: Adze --> Boat - Added connection: Bone tool --> Adze - Added connection: Hafting --> Adze - Added connection: Geometric microlith --> Sickle - Added connection: Burin --> Sewing needle - Added connection: Prepared-core tool --> Hafted spear - Added connection: Ground stone tool --> Stonemasonry - Added connection: Ground stone tool --> Adze - Added connection: Ground stone tool --> Chisel - Added connection: Stone tool --> Ground stone tool - Added connection: Ground stone tool --> Quern-stone - Added connection: Domestication of barley --> Quern-stone - Added connection: Domestication of wheat --> Quern-stone - Added connection: Rotary quern --> Animal-driven rotary mill - Added connection: Percussion flake tool --> Limestone 19 June 2026 - v.1.1.2: Refactor of prehistoric technologies - Added tech: Chisel - Added tech: Adze - Added tech: Geometric microlith - Added tech: Burin - Added tech: Microblade - Added tech: Blade - Added tech: Prepared-core tool - Added connection: Hand axe --> Prepared-core tool - Added connection: Prepared-core tool --> Blade - Added connection: Prepared-core tool --> Pressure flaking - Added connection: Blade --> Burin - Added connection: Blade --> Microblade - Added connection: Microblade --> Geometric microlith 18 June 2026 - Added tech: Cambered skis - Added tech: Snowshoe - Added tech: Skis - Added tech: Pressure flaking - Added connection: Skis --> Cambered skis 17 June 2026 - Added tech: High-fructose corn syrup - Added tech: Soft contact lens - Added tech: Catalysis - Added connection: Glucose syrup --> High-fructose corn syrup - Added connection: Enzyme extraction --> High-fructose corn syrup - Added connection: Domestication of maize --> High-fructose corn syrup - Added connection: Catalysis --> Catalytic hydrogenation - Added connection: Catalysis --> Fluid catalytic cracking - Added connection: Catalysis --> Ziegler–Natta catalyst - Added connection: Oxygen --> Catalysis - Added connection: Domestication of cattle --> Smallpox vaccine - Added connection: Corneal contact lens --> Soft contact lens - Added connection: Acrylic glass --> Soft contact lens 16 June 2026 - Added tech: Synthetic detergent - Added tech: Detergent enzyme - Added tech: Shortening - Added tech: Fat hydrogenation - Added tech: Catalytic hydrogenation - Added tech: Enzyme extraction - Added tech: Enzyme - Added tech: Glucose syrup - Added connection: Lead chamber process --> Contact process - Added connection: Enzyme --> Enzyme extraction - Added connection: Enzyme extraction --> Detergent enzyme - Added connection: Soybean paste and soy sauce --> Enzyme extraction - Added connection: Enzyme --> DNA polymerase - Added connection: Enzyme --> DNA ligase - Added connection: Enzyme --> Restriction enzymes - Added connection: Structure of DNA --> Restriction enzymes - Added connection: Structure of DNA --> DNA ligase - Added connection: Soap --> Detergent enzyme - Added connection: Soap --> Synthetic detergent - Added connection: Coal tar --> Synthetic detergent - Added connection: Sulfuric acid --> Synthetic detergent - Added connection: Fat hydrogenation --> Shortening - Added connection: Margarine --> Shortening - Added connection: Catalytic hydrogenation --> Fat hydrogenation - Added connection: Fat hydrogenation --> Synthetic detergent - Added connection: Nickel --> Catalytic hydrogenation - Added connection: Contact process --> Catalytic hydrogenation - Added connection: Hydrogen --> Catalytic hydrogenation - Added connection: Döbereiner's lamp and platinum catalysis --> Contact process - Added connection: Platinum --> Contact process - Added connection: Domestication of potatoes --> Glucose syrup - Added connection: Sulfuric acid --> Glucose syrup 15 June 2026 - Added connection: Wheel --> Gears - Added connection: Gears --> Endless chain drive 14 June 2026 - Added tech: Derailleur - Added tech: Sun and planet gear - Added connection: Safety bicycle --> Derailleur - Added connection: Bush roller chain --> Derailleur - Added connection: Tin bronze --> Gears - Added connection: Gears --> Sun and planet gear - Added connection: Gears --> Analog computer - Added connection: Watt steam engine --> Sun and planet gear - Added connection: Sun and planet gear --> Automatic transmission - Added connection: Sun and planet gear --> Differential gear - Added connection: Analog computer <--> Sun and planet gear 13 June 2026 - Added tech: Always-on packet-switched cellular data - Added tech: Mobile web - Added connection: Web browser --> Mobile web - Added connection: World Wide Web --> Mobile web - Added connection: Smartphone --> Mobile web - Added connection: Digital cellular network --> Mobile web - Added connection: Mobile web --> Always-on packet-switched cellular data - Added connection: Mobile web --> Multi-touch smartphone - Added connection: Digital cellular network --> Always-on packet-switched cellular data - Added connection: Internet protocol suite --> Always-on packet-switched cellular data - Added connection: Always-on packet-switched cellular data --> 3G cellular network 12 June 2026 - Added tech: Bush roller chain - Added tech: Electromagnetism - Added tech: Chain - Added connection: Wire --> Chain - Added connection: Chain --> Endless chain drive - Added connection: Electromagnetic induction --> Induction coil - Added connection: Electromagnet --> Electromagnetic induction - Added connection: Galvanometer --> Electromagnetic induction - Added connection: Electromagnet --> Induction coil - Added connection: Voltaic pile --> Electromagnet - Added connection: Induction coil --> Radio waves and spark-gap transmitter - Added connection: Induction coil --> Resonant transformer - Added connection: Induction coil --> Closed-core transformer - Added connection: Induction coil --> Induction balance metal detector - Added connection: Dynamo --> Ignition magneto - Added connection: Ignition magneto --> Moving assembly line - Added connection: Dry compass --> Electromagnetism - Added connection: Voltaic pile --> Electromagnetism - Added connection: Electromagnetism --> Electromagnet - Added connection: Electromagnetism --> Galvanometer - Added connection: Chlorine --> Aluminium - Added connection: Flintlock musket --> True flintlock - Added connection: True flintlock --> Interchangeable parts - Added connection: Chain --> Bush roller chain - Added connection: Bush roller chain --> Electric chainsaw - Added connection: Bush roller chain --> Airplane - Added connection: Paul-Wyatt cotton mills --> Bush roller chain 11 June 2026 - Added tech: Wire rope - Added tech: Drawn wire and draw plate - Added tech: Wire - Added connection: Nylon --> Kevlar - Added connection: Radial tire --> Kevlar - Added connection: Liquid crystals --> Kevlar - Added connection: Gold --> Wire - Added connection: Silver --> Wire - Added connection: Wire --> Drawn wire and draw plate - Added connection: Drawn wire and draw plate --> Wire rope - Added connection: Rope and twine --> Wire rope - Added connection: Drawn wire and draw plate --> Barbed wire - Added connection: Drawn wire and draw plate --> Wire wheel - Added connection: Piano --> Wire recording - Added connection: Iron smelting and wrought iron --> Drawn wire and draw plate - Added connection: Drawn wire and draw plate --> Radial tire - Added connection: Bessemer process --> Radial tire - Added connection: Drawn wire and draw plate --> Psaltery - Added connection: Drawn wire and draw plate --> Clavichord - Added connection: Drawn wire and draw plate --> Lap steel guitar - Added connection: Drawn wire and draw plate --> Wire recording - Added connection: Drawn wire and draw plate --> Electric telegraph - Added connection: Drawn wire and draw plate --> Electromagnet - Added connection: Wire --> Chain mail - Added connection: Wire rope --> Transoceanic communication cable - Added connection: Copper smelting --> Electromagnet - Added connection: Iron smelting and wrought iron --> Electromagnet 10 June 2026 - Added tech: Zinc oxide - Added tech: Standardized prefabricated ship building - Added connection: Fluorescence --> Sunscreen - Added connection: Brass --> Zinc oxide - Added connection: Zinc oxide --> Zinc white - Added connection: White lead --> Zinc white - Added connection: Copper smelting --> Brass - Added connection: Phoenician joint --> Standardized prefabricated ship building - Added connection: Trireme --> Standardized prefabricated ship building 9 June 2026 - Added tech: Automatic lathe - Added tech: Turret lathe - Added connection: Slide-rest all-metal lathe --> Milling machine - Added connection: Cannon --> Interchangeable parts - Added connection: Flintlock musket --> Interchangeable parts - Added connection: Interchangeable parts --> Turret lathe - Added connection: Turret lathe --> Automatic lathe - Added connection: Automatic flour mill --> Conveyor belt - Added connection: Automatic flour mill --> Moving assembly line - Added connection: Vulcanized rubber --> Conveyor belt - Added connection: Interchangeable parts --> Moving assembly line - Added connection: Electric motor --> Moving assembly line - Added connection: Slide-rest all-metal lathe --> Turret lathe - Added connection: Numerical control --> Industrial robot - Added connection: Cam --> Automatic lathe - Added connection: Cam --> Four-stroke engine - Added connection: Cam --> Corliss steam engine - Added connection: Automobile --> Moving assembly line - Added connection: Interchangeable parts --> Milling machine - Added connection: Ultraviolet --> Sunscreen - Added connection: Quinine --> Sunscreen 8 June 2026 - Added tech: Moving assembly line - Added tech: Conveyor belt - Added tech: Interchangeable parts - Added connection: Glass --> Borosilicate glass - Added connection: Borax --> Borosilicate glass - Added connection: Continuous track vehicle --> Continuous track snow vehicle - Added connection: Continuous track vehicle --> Half-track 7 June 2026 - Added tech: Borax - Added connection: Electrolysis --> Sodium - Added connection: Electrolysis --> Potassium - Added connection: Potassium <--> Sodium - Added connection: Xenon --> High-pressure sodium-vapor lamp - Added connection: Potassium --> Thorium - Added connection: Electrolysis --> Fluorine (isolation) - Added connection: Fluorine (isolation) --> Zippe-type centrifuge - Added connection: Fluorine (isolation) --> Gaseous diffusion - Added connection: Potassium --> Silicon - Added connection: Potassium --> Aluminium - Added connection: Potassium --> Boron - Added connection: Borax --> Boron 6 June 2026 - Added tech: Metal-halide lamp - Added tech: AC defibrillator - Added tech: Low-pressure sodium-vapor lamp - Added tech: Fused quartz - Added tech: Borosilicate glass - Added tech: Stoneware - Added connection: External DC defibrillator --> Automated external defibrillator - Added connection: Leyden jar --> Condenser microphone - Added connection: Electrolytic capacitor --> MOS DRAM - Added connection: Electrolytic capacitor --> Electronic flashtube - Added connection: Electrolytic capacitor --> Touchscreen - Added connection: Pottery --> Stoneware - Added connection: Kiln --> Stoneware - Added connection: Stoneware --> Porcelain - Added connection: Stoneware --> Coade stone - Added connection: Closed-core transformer --> AC defibrillator - Added connection: Electrotherapy --> AC defibrillator - Added connection: Electrolytic capacitor --> External DC defibrillator - Added connection: Electrocardiography machine --> Automated external defibrillator - Added connection: Photographic camera --> Flash powder - Added connection: Portland cement --> Cast stone - Added connection: Coade stone --> Cast stone - Added connection: Phenakistiscope --> Electronic flashtube - Added connection: Mercury-arc valve --> Electronic flashtube - Added connection: Thyratron --> Electronic flashtube - Added connection: Neon lighting --> Low-pressure sodium-vapor lamp - Added connection: Spoked wheel --> Phenakistiscope - Added connection: Sodium --> Leaded gasoline - Added connection: Sodium hydroxide --> Sodium - Added connection: Fused quartz --> Metal-halide lamp - Added connection: Borosilicate glass --> Metal-halide lamp - Added connection: Oxyhydrogen blowpipe --> Fused quartz 5 June 2026 - Added tech: Xenon arc lamp - Added tech: Electrolytic capacitor - Added connection: Mercury-vapor lamp --> Metal-halide lamp - Added connection: Arc lamp --> Xenon arc lamp - Added connection: Xenon --> Xenon arc lamp - Added connection: Arc lamp --> Mercury-vapor lamp - Added connection: Mercury-vapor lamp --> Mercury-arc valve - Added connection: Sodium --> Low-pressure sodium-vapor lamp - Added connection: Geissler tube --> Mercury-vapor lamp - Added connection: Mercury-vapor lamp --> Xenon arc lamp - Added connection: Lumière cinematograph --> Xenon arc lamp - Added connection: Aluminium --> Electrolytic capacitor - Added connection: Leyden jar --> Electrolytic capacitor - Added connection: Electrolysis --> Electrolytic capacitor - Added connection: Rechargeable battery --> Electrolytic capacitor - Added connection: Blown glass --> Leyden jar 4 June 2026 - Added tech: Electronic flashtube - Added connection: Electronic flashtube --> Laser - Added connection: Xenon --> Laser 3 June 2026 - Added tech: Surgical mask - Added tech: Endoscope - Added tech: Camphor - Added connection: Antiseptic surgery --> Surgical mask - Added connection: Camphor --> Celluloid 2 June 2026 - Added tech: Barding and cataphract - Added connection: Scale armor --> Barding and cataphract - Added connection: Domestication of the horse --> Barding and cataphract - Added connection: Lamellar armor --> Barding and cataphract 1 June 2026 - Added tech: Virtual machine - Added tech: War elephant - Added tech: Elephant taming - Added connection: Virtual machine --> Cloud computing - Added connection: Time-sharing --> Cloud computing - Added connection: Time-sharing --> Virtual machine - Added connection: Stored-program computer --> Cloud computing - Added connection: Elephant taming --> War elephant - Added connection: Scythed chariot --> Caltrop 31 May 2026 - Added connection: Internet protocol suite --> Media streaming - Added connection: Internet protocol suite --> Cloud computing 30 May 2026 - Added tech: Dynamic website - Added connection: Relational database --> Dynamic website - Added connection: World Wide Web --> Dynamic website - Added connection: Dynamic website --> Wiki - Added connection: Dynamic website --> Social network service - Added connection: Dynamic website --> Software as a service - Added connection: Hard disk drive --> Database 29 May 2026 - Added tech: Relational database - Added tech: Database - Added tech: Infrared spectroscopy - Added connection: Infrared --> Infrared spectroscopy - Added connection: Bolometer --> Infrared spectroscopy - Added connection: Spectroscope --> Infrared spectroscopy - Added connection: Copper --> Nickel - Added connection: Cobalt --> Nickel - Added connection: Sulfur --> Lead chamber process - Added connection: Database --> Relational database 28 May 2026 - Added tech: Slide-rest all-metal lathe - Added connection: Lathe --> Slide-rest all-metal lathe - Added connection: Screw --> Slide-rest all-metal lathe - Added connection: Slide-rest all-metal lathe <--> Screw-cutting lathe 27 May 2026 - Added tech: Catheter - Added connection: High-vacuum tube --> Pacemaker - Added connection: Electrocardiography machine --> Pacemaker - Added connection: Cellophane --> Hemodialysis machine - Added connection: Electric motor --> Hemodialysis machine - Added connection: Tin bronze --> Catheter - Added connection: Industrial robot --> Surgical robot 26 May 2026 - Added tech: Non-stick pan - Added tech: Heart-lung machine - Added tech: Hemodialysis machine - Added tech: Teflon - Added tech: ABO blood types - Added tech: Surgery under ether anesthesia - Added connection: Bolometer --> Thermographic camera - Added connection: Surgery under anesthesia <--> Surgery under ether anesthesia - Added connection: Ether --> Surgery under ether anesthesia - Added connection: Heart-lung machine --> Artificial heart - Added connection: ABO blood types --> Heart-lung machine - Added connection: Cell theory --> ABO blood types - Added connection: Antiseptic surgery --> Heart-lung machine - Added connection: Electric motor --> Heart-lung machine - Added connection: Autoclave --> Heart-lung machine - Added connection: Chlorofluorocarbons --> Teflon - Added connection: Fluorine (isolation) --> Chlorofluorocarbons - Added connection: Teflon --> Non-stick pan - Added connection: Aluminium --> Non-stick pan - Added connection: Teflon --> Atomic bomb - Added connection: Sulfuric acid --> Radium - Added connection: Sulfuric acid --> Polonium - Added connection: Hemodialysis machine --> Artificial heart 25 May 2026 - Added tech: Thermographic camera - Added tech: Night-vision device - Added connection: Galvanometer --> Wheatstone bridge - Added connection: Wheatstone bridge --> Transoceanic communication cable - Added connection: Infrared --> Infrared LED - Added connection: Infrared --> Night-vision device - Added connection: Video camera tube --> Night-vision device 24 May 2026 - Added tech: Bolometer - Added tech: Wheatstone bridge - Added connection: Opium poppy cultivation --> Morphine - Added connection: Infrared --> Bolometer - Added connection: Mirror galvanometer --> Bolometer - Added connection: Platinum --> Bolometer - Added connection: Wheatstone bridge --> Bolometer 23 May 2026 - Added tech: Mars lander - Added tech: Lunar rover - Added tech: Radioisotope generator - Added tech: Fluorescence - Added tech: Chlorophyll - Added connection: Polonium --> Radioisotope generator - Added connection: Plutonium --> Radioisotope generator - Added connection: Artificial satellite --> Radioisotope generator - Added connection: Radioisotope generator --> Interstellar probe - Added connection: Nuclear power --> Radioisotope generator - Added connection: Lunar lander --> Lunar rover - Added connection: Solar cell --> Lunar rover - Added connection: Radioisotope generator --> Lunar rover - Added connection: Lunar rover --> Mars rover - Added connection: Lunar lander --> Mars lander - Added connection: Radioisotope generator --> Mars lander - Added connection: Mars lander --> Mars rover - Added connection: Space capsule and crewed spaceflight <--> Space suit - Added connection: Ultraviolet --> Fluorescence - Added connection: Fluorescence --> Fluorescent lamp - Added connection: Fluorescence --> Green fluorescent protein - Added connection: Quinine --> Fluorescence - Added connection: Uranium --> Fluorescence - Added connection: Chlorophyll --> Fluorescence 22 May 2026 - Added tech: Traveling-wave tube - Added tech: Klystron - Added tech: Stimulated emission - Added tech: Sprayed concrete - Added tech: Millimeter waves - Added tech: Photoelectric effect - Added tech: Ultraviolet - Added tech: Infrared - Added connection: Photoelectric effect --> Photomultiplier tube - Added connection: Infrared --> Ultraviolet - Added connection: Dispersive prism and color spectrum --> Infrared - Added connection: Mercury thermometer --> Infrared - Added connection: Silver halides --> Ultraviolet - Added connection: Ultraviolet --> Excimer laser - Added connection: Dispersive prism and color spectrum --> Ultraviolet - Added connection: Ultraviolet --> Blueprint - Added connection: Ultraviolet --> Photoelectric effect - Added connection: Ultraviolet --> Photolithography - Added connection: Photoelectric effect --> Photon - Added connection: Photovoltaic effect --> Photoelectric effect - Added connection: Radio waves and spark-gap transmitter --> Photoelectric effect - Added connection: Photon --> Compton scattering - Added connection: Photon --> Stimulated emission - Added connection: Stimulated emission --> Maser - Added connection: Photon --> Wave–particle duality of matter - Added connection: X-ray --> Wave–particle duality of matter - Added connection: Millimeter waves --> Millimeter wave scanner - Added connection: Millimeter waves --> Crystal detector - Added connection: Radio waves and spark-gap transmitter --> Millimeter waves - Added connection: Triode --> Klystron - Added connection: Klystron --> Traveling-wave tube - Added connection: Klystron --> Satellite television - Added connection: Traveling-wave tube --> Satellite television - Added connection: Traveling-wave tube --> Interstellar probe 21 May 2026 - Added tech: Outboard motor - Added tech: Powered model aircraft - Added tech: Bamboo-copter - Added connection: Archimedes' screw --> Screw propeller - Added connection: Paddle wheel boat --> Screw propeller - Added connection: Screw propeller --> Steam-powered battleship - Added connection: Screw propeller --> Mechanized submarine - Added connection: Screw propeller --> Self-propelled torpedo - Added connection: Screw propeller --> Air-independent submarine - Added connection: Screw propeller --> Airplane - Added connection: Animal-driven rotary mill --> Paddle wheel boat - Added connection: Watermill --> Paddle wheel boat - Added connection: Galley --> Paddle wheel boat - Added connection: Steamboat transport --> Screw propeller - Added connection: Motorcycle --> Outboard motor - Added connection: Four-stroke engine --> Outboard motor - Added connection: Screw propeller --> Outboard motor - Added connection: Kite --> Glider - Added connection: Glider --> Normalsegelapparat - Added connection: Glider --> Powered model aircraft - Added connection: Vulcanized rubber --> Powered model aircraft - Added connection: Powered model aircraft --> Airplane - Added connection: Bamboo-copter --> Powered model aircraft - Added connection: Steamboat --> Motorboat - Added connection: Motorboat --> Outboard motor 20 May 2026 - Added tech: Formaldehyde - Added tech: Screw propeller - Added tech: Phenol - Added tech: Methanol - Added tech: Silver halides - Added tech: Shellac - Added connection: Silver halides --> Cloud seeding - Added connection: Phenol --> Antiseptic surgery - Added connection: Coal tar --> Phenol - Added connection: Phenol --> Bakelite - Added connection: Formaldehyde --> Bakelite - Added connection: Shellac --> Bakelite - Added connection: Phenol --> Particle board - Added connection: Formaldehyde --> Particle board - Added connection: Fractional distillation --> Methanol - Added connection: Silver halides --> Calotype - Added connection: Silver halides --> Daguerreotype - Added connection: Noria and water wheel --> Archimedes' screw 19 May 2026 - Added tech: Medical glove - Added tech: Antiseptic surgery - Added tech: Germ theory - Added connection: Boyle's air pump --> Pneumatic trough - Added connection: Vulcanized rubber --> Medical glove - Added connection: Antiseptic surgery --> Medical glove - Added connection: Germ theory --> Antiseptic surgery - Added connection: Compound microscope --> Germ theory - Added connection: Cell theory --> Germ theory - Added connection: Germ theory --> Pasteurization - Added connection: Germ theory --> Autoclave - Added connection: Germ theory --> Agar plate - Added connection: Germ theory --> Anthrax vaccine - Added connection: Germ theory --> Chamberland water filter - Added connection: Germ theory --> Rabies vaccine - Added connection: Germ theory --> Activated sludge 18 May 2026 - Added tech: Glycerol - Added connection: Glycerol --> Nitroglycerin - Added connection: Soap --> Glycerol - Added connection: Olive oil --> Glycerol - Added connection: Coal tar --> TNT - Added connection: Pneumatic trough --> Carbonated water - Added connection: Pneumatic trough --> Hydrogen - Added connection: Pneumatic trough --> Nitrogen - Added connection: Pneumatic trough --> Methane - Added connection: Pneumatic trough --> Oxygen 17 May 2026 - Added connection: Nitric acid --> Nitroglycerin - Added connection: Sulfuric acid --> Nitroglycerin - Added connection: Nitric acid --> TNT - Added connection: Sulfuric acid --> TNT 16 May 2026 - Added connection: Hydrogen --> Haber process - Added connection: Coke (Europe) --> Haber process 15 May 2026 - Added tech: Liquefaction of gas - Added tech: Ammonia - Added connection: Hampson–Linde air liquefaction --> Claude air liquefaction - Added connection: Limestone --> Carbon dioxide - Added connection: Carbon dioxide --> Carbonated water - Added connection: Carbon dioxide --> Nitrogen - Added connection: Carbon dioxide --> Hydrogen - Added connection: Carbon dioxide --> Oxygen - Added connection: Sulfuric acid --> Carbon dioxide - Added connection: Soda ash from plants --> Sodium bicarbonate - Added connection: Carbon dioxide --> Sodium bicarbonate - Added connection: Carbon dioxide --> Solvay process - Added connection: Sodium bicarbonate --> Solvay process - Added connection: Carbon dioxide --> Dry ice - Added connection: Carbon dioxide --> Carbon-dioxide laser - Added connection: Liquefaction of gas --> Dry ice - Added connection: Liquefaction of gas --> Liquid oxygen - Added connection: Liquefaction of gas --> Liquid nitrogen - Added connection: Liquefaction of gas --> Liquefied gas refrigerants - Added connection: Blown glass --> Liquefaction of gas - Added connection: Public gas lighting --> Gas stove - Added connection: Rib vault --> Flying buttress - Added connection: Chlorine --> Liquefaction of gas - Added connection: Sulfuric acid --> Liquefaction of gas - Added connection: Liquefied gas refrigerants --> Hampson–Linde air liquefaction - Added connection: Ammonium chloride --> Ammonia - Added connection: Ammonia --> Liquefied gas refrigerants - Added connection: Ammonia --> Liquefaction of gas - Added connection: Ammonia --> Ostwald nitric acid process - Added connection: Ammonia --> Haber process 14 May 2026 - Added tech: Cloud seeding - Added tech: Dry ice - Added tech: Carbon dioxide - Added tech: Pneumatic trough - Added connection: Argon --> Helium (isolation) - Added connection: Hampson–Linde air liquefaction --> Neon - Added connection: Argon --> Neon - Added connection: Helium (isolation) --> Neon - Added connection: Periodic table --> Neon - Added connection: Atomic emission spectroscopy --> Neon - Added connection: Hampson–Linde air liquefaction --> Krypton - Added connection: Argon --> Krypton - Added connection: Atomic emission spectroscopy --> Krypton - Added connection: Krypton --> Xenon - Added connection: Hampson–Linde air liquefaction --> Xenon - Added connection: Magnesium --> Argon - Added connection: Uranium --> Radium - Added connection: Uranium --> Polonium - Added connection: Blown glass --> Pneumatic trough - Added connection: Vacuum flask --> Hampson–Linde air liquefaction - Added connection: Airplane --> Cloud seeding - Added connection: Dry ice --> Cloud seeding - Added connection: Atomic emission spectroscopy --> Helium (discovery) - Added connection: Atomic emission spectroscopy --> Helium (isolation) - Added connection: Atomic emission spectroscopy --> Xenon - Added connection: Sulfuric acid --> Helium (isolation) - Added connection: Radioactivity --> Radon 13 May 2026 - Added connection: Periodic table --> Argon - Added connection: Nitrogen --> Argon - Added connection: Atomic emission spectroscopy --> Argon - Added connection: Geissler tube --> Argon - Added connection: Grove cell --> Argon - Added connection: Induction coil --> Argon 12 May 2026 - Added tech: Shadow-mask color TV set - Added connection: Zinc sulfide phosphor --> Shadow-mask color TV set - Added connection: Sprengel pump --> Argon - Added connection: Mercury --> Sprengel pump - Added connection: Telescope --> Magic lantern - Added connection: Color television --> Shadow-mask color TV set - Added connection: Television set --> Shadow-mask color TV set - Added connection: Terrestrial television --> Shadow-mask color TV set 11 May 2026 - Added tech: Fully mechanical astronomical clock - Added connection: Astrolabe --> Fully mechanical astronomical clock - Added connection: Magic lantern --> Autochrome - Added connection: Armillary sphere (Greece) --> Celestial globe - Added connection: Fully mechanical clock --> Fully mechanical astronomical clock - Added connection: Fully mechanical astronomical clock --> Planetarium projector - Added connection: Celestial globe --> Planetarium projector - Added connection: Light bulb --> Planetarium projector - Added connection: Fully mechanical astronomical clock <--> Balance wheel - Added connection: Subtractive color film --> Slide projector - Added connection: Magic lantern --> Planetarium projector - Added connection: Light bulb --> Slide projector - Added connection: Bakelite --> Slide projector 10 May 2026 - Added tech: Geodesic dome - Added tech: Planetarium projector - Added connection: Planetarium projector --> Geodesic dome - Added connection: True dome --> Geodesic dome 9 May 2026 - Added tech: Flying buttress 8 May 2026 - Added connection: True dome --> Pendentive dome - Added connection: Roman concrete --> True dome - Added connection: True arch --> True dome - Added connection: Public bath --> True dome 7 May 2026 - Added tech: Protactinium - Added connection: Uranium --> Protactinium - Added connection: Periodic table --> Protactinium - Added connection: Periodic table --> Technetium 6 May 2026 - Added tech: Bow and bowed instruments - Added tech: Rosin - Added connection: Tree resin --> Rosin - Added connection: Alembic --> Turpentine - Added connection: Rosin --> Bow and bowed instruments - Added connection: Rosin --> Aquatint - Added connection: Domestication of the horse --> Bow and bowed instruments - Added connection: Bow and arrow --> Bow and bowed instruments - Added connection: Lute --> Bowed rebab - Added connection: Sodium hydroxide --> Uranium - Added connection: Nitric acid --> Uranium - Added connection: Bow and bowed instruments --> Byzantine lyra - Added connection: Lute --> Byzantine lyra - Added connection: Bow and bowed instruments --> Bowed rebab - Added connection: Bow and bowed instruments --> Vielle - Added connection: Bowed rebab --> Vielle 5 May 2026 - Added tech: Turpentine - Added tech: Tree resin - Added connection: Distillation --> Pine tar - Added connection: Tree resin --> Turpentine - Added connection: Hafting --> Tree resin - Added connection: Hafting --> Glue 4 May 2026 - Added tech: Spinthariscope - Added tech: Zinc sulfide phosphor - Added tech: Substitution cipher - Added connection: Substitution cipher --> Cipher disk - Added connection: Substitution cipher --> Frequency analysis - Added connection: Alphabet with vowels --> Substitution cipher - Added connection: Oil paint --> Radioluminescent paint - Added connection: Zinc sulfide phosphor --> Radioluminescent paint - Added connection: Radium --> Spinthariscope - Added connection: Zinc sulfide phosphor --> Spinthariscope - Added connection: Compound microscope --> Spinthariscope - Added connection: Zinc sulfide phosphor --> Television set - Added connection: Spinthariscope --> Scintillation counter 3 May 2026 - Added tech: Chemical vapor deposition - Added connection: Carbon fibers --> Chemical vapor deposition - Added connection: Chemical vapor deposition --> Plasma-enhanced chemical vapor deposition - Added connection: Chemical vapor deposition --> Metalorganic vapour-phase epitaxy - Added connection: Chemical vapor deposition --> Atomic layer deposition - Added connection: Light bulb <--> Chemical vapor deposition - Added connection: Vacuum pump --> Chemical vapor deposition 2 May 2026 - Added tech: Chromolithography - Added connection: Lithography --> Chromolithography - Added connection: Red-yellow-blue color printing --> Chromolithography 1 May 2026 - Added tech: Subtractive color photography - Added connection: Color theory --> Color photography - Added connection: Color photography --> Subtractive color photography - Added connection: Red-yellow-blue color printing --> Subtractive color photography - Added connection: Color photography --> Color motion picture film - Added connection: Subtractive color photography --> Autochrome - Added connection: Subtractive color photography --> Three-strip color film - Added connection: Subtractive color photography --> Subtractive color film 30 April 2026 - Added tech: Red-yellow-blue color printing - Added tech: Color theory - Added connection: Mezzotint --> Red-yellow-blue color printing - Added connection: Engraving --> Photoengraving - Added connection: Etching --> Photoengraving - Added connection: Photoengraving --> Halftone - Added connection: Aquatint --> Halftone - Added connection: Dispersive prism and color spectrum --> Color theory - Added connection: Color theory --> Red-yellow-blue color printing - Added connection: Cochineal dye --> Red-yellow-blue color printing - Added connection: Prussian blue --> Red-yellow-blue color printing 29 April 2026 - Added tech: Waterproof disposable diaper - Added tech: Halftone - Added tech: Chalumeau - Added tech: Recorder - Added connection: Nylon --> Waterproof disposable diaper - Added connection: Chalumeau --> Clarinet - Added connection: Collodion wet-plate photography --> Halftone - Added connection: Flute --> Recorder - Added connection: Flute --> Chalumeau 28 April 2026 - Added tech: Aquatint - Added tech: Mezzotint - Added connection: Nitric acid --> Etching - Added connection: Copper smelting --> Etching - Added connection: Etching --> Aquatint - Added connection: Mezzotint --> Aquatint - Added connection: Engraving --> Mezzotint 27 April 2026 - Added connection: Etching --> Siderography and steel engraving - Added connection: Difference engine --> Analytical engine 26 April 2026 - Added tech: Etching - Added connection: Ink --> Woodblock printing - Added connection: Engraving --> Etching - Added connection: Full plate armor --> Etching 25 April 2026 - Added tech: Printing ink - Added connection: Ink --> Printing ink - Added connection: Oil paint --> Printing ink - Added connection: Printing ink <--> Printing press - Added connection: Printing ink --> Lithography 24 April 2026 - Added tech: Iron gall ink - Added tech: Vitriol - Added connection: Tricycle and quadricycle --> Electric car - Added connection: Ink --> Iron gall ink - Added connection: Vitriol --> Iron gall ink - Added connection: Vitriol --> Sulfuric acid 23 April 2026 - Added tech: Watercolor paint cake - Added tech: Gypsum plaster - Added connection: Beekeeping --> Watercolor paint cake - Added connection: Gum arabic --> Watercolor paint cake - Added connection: Ink --> Watercolor paint cake - Added connection: Paint --> Watercolor paint cake - Added connection: Papermaking --> Watercolor paint cake - Added connection: Numerical control --> Laser cutting - Added connection: Acrylic glass --> Acrylic paint - Added connection: Oil paint --> Acrylic paint - Added connection: Polyethylene --> Acrylic glass - Added connection: Control of fire --> Gypsum plaster - Added connection: Gypsum plaster --> Tempera 22 April 2026 - Added tech: Encaustic painting - Added tech: Fresco - Added tech: Tempera - Added tech: Paint - Added connection: Pigments --> Paint - Added connection: Paint --> Cave painting - Added connection: Control of fire --> Paint - Added connection: Paint --> Oil paint - Added connection: Paint --> Tempera - Added connection: Lime mortar and plaster --> Fresco - Added connection: Paint --> Fresco - Added connection: Domestication of chickens --> Tempera - Added connection: Beekeeping --> Encaustic painting - Added connection: Paint --> Encaustic painting 21 April 2026 - Added tech: Surgical robot - Added tech: Rose madder - Added connection: Hydraulic cylinder --> Hydraulic excavator - Added connection: Hydraulic cylinder --> Hydraulic accumulator - Added connection: Hydraulic press --> Hydraulic cylinder - Added connection: Hydraulic cylinder --> Industrial robot - Added connection: Hydraulic cylinder --> Injection molding - Added connection: Hydraulic cylinder --> Bulldozer 20 April 2026 - Added tech: Industrial robot - Added tech: Hydraulic cylinder - Added connection: Drum memory --> Industrial robot - Added connection: Servomechanism --> Industrial robot 19 April 2026 - Added connection: Numerical control --> Computer-aided design - Added connection: Computer-aided design --> Stereolithography - Added connection: Numerical control --> Stereolithography - Added connection: Stereolithography --> Selective laser sintering - Added connection: Selective laser sintering --> Selective laser melting - Added connection: Laser --> Stereolithography - Added connection: Numerical control --> Selective laser sintering - Added connection: Stereolithography --> Fused filament fabrication - Added connection: Numerical control --> Fused filament fabrication 18 April 2026 - Added tech: Paint tube - Added tech: Cathodic protection - Added tech: Copper sheathed ship - Added tech: Hot-dip zinc coating - Added tech: Tinplate - Added connection: Zinc smelting --> Hot-dip zinc coating - Added connection: Iron smelting and wrought iron --> Hot-dip zinc coating - Added connection: Opium poppy cultivation --> Oil paint - Added connection: Oil paint --> Paint tube - Added connection: Tin --> Tinplate - Added connection: Iron smelting and wrought iron --> Tinplate - Added connection: Tinplate --> Tin can - Added connection: Tinplate --> Paint tube - Added connection: Tinplate --> Hot-dip zinc coating - Added connection: Ammonium chloride --> Hot-dip galvanization - Added connection: Sulfuric acid --> Hot-dip galvanization - Added connection: Cathodic protection --> Hot-dip galvanization - Added connection: Hot-dip zinc coating --> Hot-dip galvanization - Added connection: Voltaic pile --> Cathodic protection - Added connection: Copper sheathed ship --> Cathodic protection - Added connection: Frigate --> Copper sheathed ship - Added connection: Copper smelting --> Copper sheathed ship - Added connection: Iron smelting and wrought iron --> Cathodic protection - Added connection: Zinc smelting --> Cathodic protection - Added connection: Electrostatic generator --> Galvanism - Added connection: Leyden jar --> Galvanism - Added connection: Kite experiment --> Galvanism 17 April 2026 - Added tech: Siderography and steel engraving - Added tech: Engraving - Added tech: Oil paint - Added tech: Niello - Added connection: Gum arabic --> Ink - Added connection: Gum arabic --> Adhesive postage stamp - Added connection: Tin bronze --> Niello - Added connection: Silver --> Niello - Added connection: Sulfur --> Niello - Added connection: Copper smelting --> Niello - Added connection: Crucible --> Niello - Added connection: Niello --> Engraving - Added connection: Copper smelting --> Engraving - Added connection: Papermaking --> Engraving - Added connection: Woodblock printing --> Engraving - Added connection: Engraving --> Siderography and steel engraving - Added connection: Siderography and steel engraving --> Adhesive postage stamp - Added connection: Paper money --> Siderography and steel engraving - Added connection: Domestication of flax --> Oil paint 16 April 2026 - Added tech: Carillon - Added tech: Barrel organ - Added tech: Gum arabic - Added connection: Barrel organ --> Loom with punched tape - Added connection: Pipe organ --> Barrel organ - Added connection: Barrel organ --> Music box - Added connection: Pocket watch --> Music box - Added connection: Fully mechanical clock --> Barrel organ - Added connection: Fully mechanical clock --> Balance wheel - Added connection: Bronze bell --> Carillon - Added connection: Fully mechanical clock --> Carillon - Added connection: Cam --> Barrel organ - Added connection: Cam --> Carillon - Added connection: Bow drill --> Lathe - Added connection: Wheel --> Cam - Added connection: Barrel organ --> Player piano - Added connection: Pump organ --> Player piano - Added connection: Limestone --> Lithography - Added connection: Gum arabic --> Lithography 15 April 2026 - Added tech: Electronic analog computer - Added tech: Music box - Added connection: Tabulating machine --> Numerical control - Added connection: Fire-control system --> Numerical control - Added connection: Servomechanism --> Ballistic missile - Added connection: Servomechanism --> Automated anti-aircraft fire-control system - Added connection: Servomechanism --> Cruise control - Added connection: Gyroscope --> Ballistic missile - Added connection: Servomechanism --> Flying bomb - Added connection: Electronic analog computer --> Ballistic missile - Added connection: Liquid-propellant rocket --> Electronic analog computer - Added connection: Amplifier --> Electronic analog computer - Added connection: Ball-and-disk integrator --> Electronic analog computer - Added connection: Dumaresq --> Fire-control system 14 April 2026 - Added tech: Numerical control - Added tech: Servomechanism - Added tech: Milling machine - Added connection: Flintlock musket --> Milling machine - Added connection: Milling machine --> Numerical control - Added connection: Centrifugal governor --> Servomechanism - Added connection: Ocean liner --> Servomechanism - Added connection: Steam-powered battleship --> Servomechanism - Added connection: Servomechanism --> Numerical control - Added connection: Punched card --> Player piano 13 April 2026 - Added tech: Grooved rolling mill - Added tech: Reverberatory furnace - Added connection: Polished plate glass --> Aquarium - Added connection: Screw-cutting lathe --> Planer - Added connection: Lathe --> Screw-cutting lathe - Added connection: Puddling <--> Grooved rolling mill - Added connection: Slitting mill --> Grooved rolling mill - Added connection: Iron smelting and wrought iron --> I-beam - Added connection: Grooved rolling mill --> I-beam - Added connection: Grooved rolling mill --> Corrugated iron - Added connection: Blast furnace --> Puddling - Added connection: Electronic CCTV and security camera --> Home video security system - Added connection: Security alarm --> Home video security system - Added connection: Reverberatory furnace --> Puddling - Added connection: Reverberatory furnace --> Open hearth furnace - Added connection: Tin bronze --> Reverberatory furnace - Added connection: Cannon --> Reverberatory furnace 12 April 2026 - v1.1.1: Desktop zoom - Added tech: Home video security system - Added tech: Security alarm 11 April 2026 - Added connection: Selenium photocell --> Nipkow disk - Added connection: Mechanical television --> Electronic television 10 April 2026 - Added tech: Electronic CCTV and security camera - Added tech: Closed-circuit television - Added connection: Videotelephone --> Video compression - Added connection: Video compression --> DVD - Added connection: Video compression --> Media streaming - Added connection: Closed-circuit television --> Electronic CCTV and security camera - Added connection: Mechanical television --> Closed-circuit television - Added connection: Electronic CCTV and security camera <--> Ballistic missile - Added connection: Electronic television --> Electronic CCTV and security camera - Added connection: Video camera tube --> Electronic CCTV and security camera 9 April 2026 - Added tech: Video compression - Added tech: Videotelephone - Added connection: Mechanical television --> Videotelephone - Added connection: Telephone --> Videotelephone - Added connection: Cathode-ray tube --> Videotelephone - Added connection: Nipkow disk --> Videotelephone 8 April 2026 - v1.1: Mobile zoom - Added tech: Modern autopen - Added tech: Spray-dried instant coffee - Added tech: Instant coffee - Added tech: Spray dryer - Added tech: Polygraph autopen - Added tech: Pantograph - Added tech: Clothes iron - Added connection: Clothes iron --> Electric flatiron - Added connection: Cast iron --> Clothes iron - Added connection: Joule heating --> Electric flatiron - Added connection: Voltaic pile --> Joule heating - Added connection: Galvanometer --> Joule heating - Added connection: Pantograph --> Polygraph autopen - Added connection: Polygraph autopen --> Modern autopen - Added connection: Fountain pen --> Polygraph autopen - Added connection: Pantograph --> Tabulating machine - Added connection: Coffee --> Instant coffee - Added connection: Spray dryer --> Spray-dried instant coffee - Added connection: Instant coffee --> Spray-dried instant coffee - Added connection: Commercial telegraphy --> Pneumatic tube mail - Added connection: Vacuum pump --> Pneumatic tube mail 6 April 2026 - Added tech: Wetsuit - Added tech: Self-contained breathing apparatus - Added tech: Neoprene - Added tech: Machine drawn cylinder sheet glass - Added tech: Acetylene - Added connection: Machine drawn cylinder sheet glass --> Float glass - Added connection: Potassium --> Acetylene - Added connection: Acetylene --> Neoprene - Added connection: Neoprene --> Wetsuit - Added connection: Broad sheet glass --> Machine drawn cylinder sheet glass - Added connection: Synthetic rubber --> Neoprene - Added connection: Crown glass --> Machine drawn cylinder sheet glass - Added connection: Acetylene --> Carbide lamp - Added connection: Acetylene --> Calcium carbide production - Added connection: Lime --> Calcium carbide production - Added connection: Acetylene --> Oxy-fuel welding and cutting - Added connection: Scuba set --> Wetsuit - Added connection: Gas mask --> Self-contained breathing apparatus - Added connection: Diving regulator --> Self-contained breathing apparatus - Added connection: Scuba set <--> Self-contained breathing apparatus 5 April 2026 - Added tech: Fourcault drawn sheet glass - Added connection: Fourcault drawn sheet glass --> Float glass - Added connection: Polished plate glass --> Float glass - Added connection: Broad sheet glass --> Fourcault drawn sheet glass - Added connection: Tin --> Float glass - Added connection: Polished plate glass --> Laminated glass - Added connection: Polished plate glass --> Silver mirror 4 April 2026 - Added tech: Polished plate glass - Added connection: Glass --> Polished plate glass - Added connection: Tin-mercury amalgam mirror --> Polished plate glass 3 April 2026 - Added tech: Crown glass - Added tech: Broad sheet glass - Added tech: Lapis specularis window - Added connection: Glass window --> Broad sheet glass - Added connection: Blown glass --> Broad sheet glass - Added connection: Blown glass --> Crown glass - Added connection: Glass window --> Crown glass - Added connection: Glass --> Magnifying glass - Added connection: Broad sheet glass --> Glasshouse - Added connection: Lapis specularis window --> Greenhouse - Added connection: Mining --> Lapis specularis window - Added connection: Lapis specularis window --> Glass window 2 April 2026 - Added tech: Automatic bottle-blowing machine - Added connection: Blown glass --> Automatic bottle-blowing machine - Added connection: Light bulb --> Automatic bottle-blowing machine - Added connection: Automatic bottle-blowing machine --> Glass wool 1 April 2026 - Added tech: Glass wool - Added tech: Mineral wool - Added connection: Glass wool --> Fiberglass - Added connection: Blast furnace --> Mineral wool - Added connection: Mineral wool --> Glass wool 31 March 2026 - Added tech: Stable aquarium - Added tech: Aquarium - Added connection: Glasshouse --> Terrarium - Added connection: Terrarium --> Stable aquarium - Added connection: Aquarium --> Stable aquarium 30 March 2026 - Added tech: Terrarium 29 March 2026 - Added tech: Magnetic stripe card - Added tech: Electric flatiron - Added connection: Magnetic tape --> Magnetic stripe card - Added connection: Electric flatiron --> Magnetic stripe card - Added connection: Credit card --> Magnetic stripe card 26 March 2026 - Added tech: Cork - Added connection: Cork --> Cell - Added connection: Treadle loom --> Drawloom - Added connection: Ground loom --> Treadle loom - Added connection: Treadle loom --> Flying shuttle 25 March 2026 - Added tech: Ground loom - Added connection: Rope and twine --> Jute - Added connection: Weaving and basketry --> Ground loom 23 March 2026 - Added tech: Jute - Added connection: Rope and twine --> Safety fuse - Added connection: Jute --> Safety fuse - Added connection: Coal tar --> Safety fuse 21 March 2026 - Added tech: Modern land mine - Added tech: Mortar and artillery shell - Added connection: Explosive shell gun --> Induction balance metal detector - Added connection: Modern land mine --> Polish mine detector - Added connection: Pressure-operated land mine --> Modern land mine - Added connection: Percussion cap --> Contact fuze - Added connection: Fuse --> Grenade - Added connection: Grenade --> Mortar and artillery shell - Added connection: Cannon --> Mortar and artillery shell 20 March 2026 - Added tech: Contact fuze - Added tech: Caltrop - Added connection: Caltrop --> Land mine - Added connection: Snaphance --> Pressure-operated land mine - Added connection: Iron smelting and wrought iron --> Caltrop 19 March 2026 - Added connection: Gunpowder --> Fuse - Added connection: Fuse --> Safety fuse - Added connection: Mortar and artillery shell --> Explosive shell gun - Added connection: Land mine --> Pressure-operated land mine - Added connection: Fuse --> Land mine 17 March 2026 - Added tech: Fuse 16 March 2026 - Added tech: Safety fuse - Added tech: Explosive shell gun - Added tech: Pressure-operated land mine - Added connection: Explosive shell gun --> Ironclad 15 March 2026 - Added connection: Triode --> Induction balance metal detector - Added connection: High-vacuum tube --> Radio-frequency metal detector 14 March 2026 - Added tech: Polish mine detector - Added tech: Radio-frequency metal detector - Added tech: Induction balance metal detector - Added connection: Radio direction finding --> Radio-frequency metal detector - Added connection: Induction balance metal detector <--> Radio-frequency metal detector - Added connection: Radio-frequency metal detector --> Polish mine detector 13 March 2026 - Added tech: Full body scanner - Added connection: Full body scanner --> Millimeter wave scanner - Added connection: X-ray --> Compton scattering - Added connection: Compton scattering --> Full body scanner 11 March 2026 - Added tech: Millimeter wave scanner 10 March 2026 - Added connection: Optical fiber --> Quantum cryptography - Added connection: Laser --> Quantum cryptography 9 March 2026 - Added tech: Protein - Added connection: Protein --> Protein sequencing 8 March 2026 - Added tech: Multiple sequence alignment - Added connection: Mirror galvanometer <--> Transoceanic communication cable - Added connection: DNA sequencing --> Multiple sequence alignment - Added connection: Multiple sequence alignment --> AI protein structure prediction - Added connection: X-ray crystallography --> AI protein structure prediction 7 March 2026 - Added tech: Hot water central heating - Added tech: Chimney - Added connection: Transoceanic communication cable --> Syphon recorder - Added connection: Transoceanic communication cable --> Kelvite sounding machine - Added connection: Hot water central heating --> Radiator - Added connection: Domestication of chickens --> Thermostat - Added connection: Protein sequencing --> AI protein structure prediction - Added connection: Iron smelting and wrought iron --> Hot water central heating - Added connection: Chimney --> Franklin stove - Added connection: Chimney --> Central heating - Added connection: Stonemasonry --> Chimney - Added connection: Hypocaust --> Chimney - Added connection: Sounding machine --> Transoceanic communication cable - Added connection: Ocean liner --> Transoceanic communication cable 6 March 2026 - Added tech: Radiator - Added tech: Central heating - Added connection: Central heating --> Hot water central heating 5 March 2026 - Added tech: AI protein structure prediction - Added tech: Quantum cryptography - Added connection: Public-key cryptography --> Quantum cryptography - Added connection: Submarine communication cable --> Transoceanic communication cable - Added connection: Transformer (machine learning) --> AI protein structure prediction 4 March 2026 - Added tech: Transoceanic communication cable 2 March 2026 - Added tech: Drum memory - Added tech: Differential analyzer - Added connection: Wire recording --> Drum memory - Added connection: Electromagnet --> Wire recording - Added connection: Telephone --> Wire recording - Added connection: Drum memory --> Magnetic-core memory - Added connection: Phonograph --> Wire recording - Added connection: Tabulating machine --> Drum memory 1 March 2026 - Added tech: Graphics software - Added tech: Framebuffer - Added tech: Magnetic-core memory - Added tech: Digital image - Added connection: Wirephoto --> Digital image - Added connection: Digital image --> Computer digital image - Added connection: Computer digital image --> Digital camera - Added connection: Computer digital image --> CT scan - Added connection: Computer digital image --> Discrete cosine transform - Added connection: Magnetic-core memory --> Framebuffer - Added connection: Electromagnet --> Magnetic-core memory - Added connection: Framebuffer --> Graphics software - Added connection: Stored-program computer --> Magnetic-core memory - Added connection: MOS DRAM --> Graphics software - Added connection: Computer-aided design --> Graphics software - Added connection: Ball-and-disk integrator --> Differential analyzer 28 February 2026 - Added tech: Omni-font optical character recognition - Added tech: Flatbed image scanner - Added tech: Computer digital image - Added tech: Synthetic-aperture radar - Added tech: Optophone - Added connection: Radar --> Synthetic-aperture radar - Added connection: Stored-program computer --> Computer digital image - Added connection: Wirephoto --> Computer digital image - Added connection: Computer digital image --> Flatbed image scanner - Added connection: Laser --> Flatbed image scanner - Added connection: Flatbed image scanner --> Omni-font optical character recognition - Added connection: Charged-coupled device --> Omni-font optical character recognition - Added connection: Microcomputer --> Omni-font optical character recognition - Added connection: Selenium photocell --> Optophone 26 February 2026 - v1.0.5: Rename Finance to Commerce 25 February 2026 - Added tech: Universal Product Code - Added tech: Barcode - Added connection: Morse code --> Barcode - Added connection: Photomultiplier tube --> Barcode - Added connection: Barcode --> Universal Product Code - Added connection: Laser --> Universal Product Code 24 February 2026 - Added tech: Virtual reality headset - Added connection: Head-mounted display --> Virtual reality headset - Added connection: Stereoscope --> Head-mounted display - Added connection: Tin-mercury amalgam mirror --> Stereoscope - Added connection: Dispersive prism and color spectrum --> Stereoscope - Added connection: Perspective in art --> Head-mounted display 23 February 2026 - Added connection: Weather forecasting --> Weather radar 22 February 2026 - Added tech: Weather radar - Added tech: Radar network - Added connection: Radar network --> Computer network - Added connection: Fighter aircraft --> Radar network - Added connection: Radar --> Radar network - Added connection: Telephone --> Radar network - Added connection: Radar --> Weather radar 21 February 2026 - Added tech: Massively parallel sequencing - Added tech: Computer-aided design - Added tech: Light pen - Added connection: High-level programming language --> Spreadsheet - Added connection: High-level programming language --> Word processor software - Added connection: High-level programming language --> Graphical user interface - Added connection: High-level programming language --> Portable operating system - Added connection: Light pen --> Computer-aided design - Added connection: Stored-program computer --> Light pen - Added connection: Light pen --> Touchscreen - Added connection: Cathode-ray tube --> Light pen - Added connection: Stored-program computer --> Computer-aided design - Added connection: Human genome sequencing --> Massively parallel sequencing - Added connection: Optical fiber --> Massively parallel sequencing - Added connection: DNA sequencing --> Massively parallel sequencing 19 February 2026 - Added tech: AI coding agent - Added tech: AI code completion - Added connection: Reasoning model --> AI coding agent - Added connection: LLM chatbot --> AI coding agent - Added connection: AI code completion --> AI coding agent - Added connection: Large language model --> AI code completion - Added connection: Cloud computing --> Large language model - Added connection: Cloud computing --> Virtual assistant - Added connection: Cloud computing --> Smart speaker - Added connection: Radio waves and spark-gap transmitter --> Radio detector - Added connection: Induction coil --> Radio detector - Added connection: Galvanometer --> Radio detector 17 February 2026 - Added tech: Ocean liner - Added connection: Steamboat transport --> Ocean liner - Added connection: Ocean liner --> Fessenden oscillator 16 February 2026 - Added connection: Rail transport --> Nomogram 14 February 2026 - Added tech: VHF omnidirectional range - Added tech: High-frequency direction finder - Added tech: Low-frequency radio range - Added tech: Adcock antenna - Added tech: Bellini–Tosi direction finder - Added tech: Radio navigation system - Added tech: Radio direction finding - Added tech: Submarine signal bell - Added connection: Radio direction finding --> Bellini–Tosi direction finder - Added connection: Radio waves and spark-gap transmitter --> Radio direction finding - Added connection: Bellini–Tosi direction finder --> Adcock antenna - Added connection: Weather forecasting --> High-frequency direction finder - Added connection: Adcock antenna --> High-frequency direction finder - Added connection: Bellini–Tosi direction finder --> High-frequency direction finder - Added connection: Oscilloscope --> High-frequency direction finder - Added connection: Cathode-ray tube --> High-frequency direction finder - Added connection: Piezoelectricity --> Piezoelectric transducer - Added connection: Low-frequency radio range --> VHF omnidirectional range - Added connection: Adcock antenna --> Low-frequency radio range - Added connection: Triode <--> Bellini–Tosi direction finder - Added connection: Submarine signal bell --> Fessenden oscillator - Added connection: Zeppelin --> Radio navigation system - Added connection: Radio direction finding --> Radio navigation system - Added connection: Radio navigation system --> Low-frequency radio range - Added connection: Electric-powered submarine --> Piezoelectric transducer - Added connection: Piezoelectric transducer --> Sonar - Added connection: Oscilloscope --> Medical ultrasound - Added connection: Piezoelectric transducer --> Ultrasonic testing - Added connection: Carbon microphone --> Submarine signal bell - Added connection: High-frequency direction finder --> Radar - Added connection: Airplane --> Low-frequency radio range - Added connection: Cathode-ray tube --> Radar 12 February 2026 - Added connection: Ultrasonic testing --> Medical ultrasound - Added connection: Titanium --> Kroll process 10 February 2026 - Added tech: Medical ultrasound - Added tech: Ultrasonic testing - Added tech: Sonar - Added tech: Piezoelectric transducer - Added tech: Fessenden oscillator - Added tech: Treadle loom - Added connection: Fessenden oscillator --> Sonar 7 February 2026 - Added connection: Stonemasonry --> Ondol - Added connection: Control of fire --> Ondol 5 February 2026 - Added connection: Leblanc process --> Claus process - Added connection: Sulfur --> Claus process 4 February 2026 - Added tech: Saqiyah - Added tech: Noria and water wheel - Added connection: Noria and water wheel --> Saqiyah - Added connection: Animal-driven rotary mill --> Saqiyah - Added connection: Spoked wheel --> Noria and water wheel - Added connection: Irrigation --> Noria and water wheel - Added connection: Noria and water wheel --> Watermill - Added connection: Gears --> Saqiyah - Added connection: Irrigation --> Chain pump 3 February 2026 - Added tech: Spoked wheel - Added connection: Wheel --> Spoked wheel - Added connection: Spoked wheel --> Chariot - Added connection: Spoked wheel --> Dandy horse - Added connection: Spoked wheel --> Wire wheel 2 February 2026 - Added tech: Warp-weighted loom - Added connection: Rope and twine --> Weaving and basketry - Added connection: Weaving and basketry --> Warp-weighted loom - Added connection: Linen --> Weaving and basketry 1 February 2026 - Added tech: Lockstitch sewing machine - Added tech: Stitching awl - Added connection: Tanned leather --> Sewing machine - Added connection: Sewing machine --> Lockstitch sewing machine - Added connection: Soap --> Sodium hydroxide - Added connection: Soda ash from plants --> Sodium hydroxide - Added connection: Lime --> Sodium hydroxide - Added connection: Sewing needle --> Lockstitch sewing machine - Added connection: Sewing needle --> Nålebinding - Added connection: Stitching awl --> Sewing machine - Added connection: Stitching awl --> Sewing needle - Added connection: Hand axe --> Bone tool 31 January 2026 - Added connection: Lime --> Calcium - Added connection: Lime --> Beet sugar factory - Added connection: Limestone --> Portland cement - Added connection: Limestone --> Gilchrist–Thomas process - Added connection: Lime --> Basic oxygen steelmaking - Added connection: Lime --> Egyptian faience - Added connection: Lime --> Autoclaved aerated concrete 30 January 2026 - Added tech: Chloralkali process - Added tech: Solvay process - Added tech: Limestone - Added connection: Leblanc process --> Solvay process - Added connection: Lime --> Nixtamalization - Added connection: Soda ash from plants --> Sodium hypochlorite bleach - Added connection: Lime --> Bleaching powder - Added connection: Salt mining --> Leblanc process - Added connection: Sulfuric acid --> Leblanc process - Added connection: Coal mining --> Leblanc process - Added connection: Asbestos (industrial use) --> Chloralkali process - Added connection: Chlorine --> Chloralkali process - Added connection: Limestone --> Lime - Added connection: Limestone --> Solvay process - Added connection: Control of fire --> Lime 29 January 2026 - Added tech: Water chlorination - Added tech: Waterproof raincoat - Added tech: Sodium hypochlorite bleach - Added tech: Bleaching powder - Added tech: Leblanc process - Added tech: Bleach - Added tech: Sodium hydroxide - Added tech: Soda ash from plants - Added connection: Chlorine --> Bleach - Added connection: Bleach --> Sodium hypochlorite bleach - Added connection: Chlorine --> Water chlorination - Added connection: Rubber --> Waterproof raincoat - Added connection: Coal tar --> Waterproof raincoat - Added connection: Bleach --> Bleaching powder - Added connection: Sodium hypochlorite bleach --> Water chlorination - Added connection: Chlorine --> Bleaching powder - Added connection: Hydrochloric acid --> Chlorine - Added connection: Natron --> Soda ash from plants - Added connection: Glass --> Soda ash from plants - Added connection: Soda ash from plants --> Leblanc process - Added connection: Pottery --> Plumbing 28 January 2026 - Added tech: Activated sludge - Added tech: Water purification by sand filter - Added tech: Centrifugal governor - Added connection: Post windmill --> Centrifugal governor - Added connection: Watt steam engine --> Centrifugal governor - Added connection: Sword --> Guillotine - Added connection: Hafted axe --> Guillotine 27 January 2026 - Added tech: Guillotine 26 January 2026 - Added tech: Marker degradation - Added tech: Bunsen cell - Added tech: Grove cell - Added connection: Marker degradation --> Combined oral contraceptive pill - Added connection: Linen --> Condom - Added connection: Bunsen cell --> Fluorine (isolation) - Added connection: Grove cell --> Bunsen cell - Added connection: Daniell cell --> Grove cell - Added connection: Zinc smelting --> Grove cell - Added connection: Platinum --> Grove cell 24 January 2026 - Added tech: Aerosol spray can - Added tech: Intrauterine device - Added tech: Condom - Added tech: Rib vault - Added tech: Glass window - Added tech: Groin vault - Added tech: Barrel vault - Added connection: Flute --> Aulos - Added connection: Construction mortar --> Barrel vault - Added connection: Fired bricks --> Barrel vault - Added connection: Barrel vault --> Groin vault - Added connection: Groin vault --> Rib vault - Added connection: Glass --> Glass window 17 January 2026 - Added connection: Achromatic lens and achromatic telescope --> Spectroscope - Added connection: Telescope --> Spectroscope - Added connection: Glass --> Dispersive prism and color spectrum - Added connection: Spectroscope --> Spectrophotometer - Added connection: Spectroscope --> X-ray crystallography 15 January 2026 - Added tech: Petroleum naphtha - Added tech: Dispersive prism and color spectrum - Added connection: Petroleum naphtha --> Ferrocerium lighter - Added connection: Fractional distillation --> Petroleum naphtha - Added connection: Modern oil well --> Petroleum naphtha - Added connection: Petroleum as fuel --> Petroleum naphtha - Added connection: Dispersive prism and color spectrum --> Spectroscope 14 January 2026 - Added connection: Iron smelting and wrought iron --> Ice skates with sharp edge 13 January 2026 - Added tech: Disposable lighter - Added tech: Ferrocerium lighter - Added tech: Lutetium - Added tech: Ferrocerium - Added tech: Ytterbium - Added tech: Butane - Added tech: Kipp's apparatus - Added tech: Cerium - Added tech: Ice skates with sharp edge - Added tech: Ice skates - Added connection: Zinc smelting --> Döbereiner's lamp and platinum catalysis - Added connection: Sulfuric acid --> Döbereiner's lamp and platinum catalysis - Added connection: Platinum --> Döbereiner's lamp and platinum catalysis - Added connection: Hydrogen --> Döbereiner's lamp and platinum catalysis - Added connection: Blown glass --> Kipp's apparatus - Added connection: Hydrogen --> Kipp's apparatus - Added connection: Cerium --> Ferrocerium - Added connection: Ferrocerium --> Ferrocerium lighter - Added connection: Iron smelting and wrought iron --> Ferrocerium - Added connection: Ytterbium --> Lutetium - Added connection: Petroleum as fuel --> Butane - Added connection: Ferrocerium lighter --> Disposable lighter - Added connection: Butane --> Disposable lighter - Added connection: True flintlock --> Ferrocerium lighter - Added connection: Bone tool --> Ice skates - Added connection: Ice skates --> Ice skates with sharp edge - Added connection: Ice skates with sharp edge --> Roller skates 7 January 2026 - Added tech: Butter - Added tech: Cheese - Added connection: Butter --> Margarine - Added connection: Domestication of sheep --> Cheese - Added connection: Domestication of goats --> Butter - Added connection: Domestication of sheep --> Butter 6 January 2026 - Added tech: Atomic emission spectroscopy - Added tech: Spectroscope - Added connection: Atomic emission spectroscopy --> Atomic absorption spectroscopy - Added connection: Spectroscope --> Atomic emission spectroscopy 5 January 2026 - Added connection: Chromatography --> Gas chromatography 4 January 2026 - Added tech: Atomic absorption spectroscopy - Added tech: Gas chromatography 3 January 2026 - Added tech: Polymer banknote - Added tech: Polypropylene - Added tech: Ziegler–Natta catalyst - Added tech: Diazomethane - Added tech: Propylene - Added tech: Bromine - Added tech: Ethylene - Added connection: Aniline --> Synthetic dye - Added connection: Propylene --> Polypropylene - Added connection: Diazomethane --> Polyethylene - Added connection: Sulfuric acid --> Ethylene - Added connection: Distilled spirit --> Ethylene - Added connection: Polyethylene --> Ziegler–Natta catalyst - Added connection: Ethylene --> Ziegler–Natta catalyst - Added connection: Ziegler–Natta catalyst --> Polypropylene - Added connection: Titanium --> Ziegler–Natta catalyst - Added connection: Bromine --> Propylene - Added connection: Ether --> Bromine - Added connection: Chlorine --> Bromine - Added connection: Polypropylene --> Polymer banknote - Added connection: Paper money --> Polymer banknote 30 December 2025 - Added tech: Oral irrigator - Added tech: Dental floss - Added connection: Silk --> Dental floss - Added connection: Syringe --> Oral irrigator 24 December 2025 - Added tech: Exoskeleton - Added tech: Airbag - Added tech: Eraser - Added connection: Rubber --> Eraser - Added connection: Leavened bread --> Eraser - Added connection: Charcoal --> Eraser - Added connection: Automobile --> Airbag 22 December 2025 - Added tech: Nuclear-powered surface ship - Added tech: Pencil sharpener - Added tech: Noodles - Added connection: Nuclear-powered surface ship --> Small modular reactor - Added connection: Nuclear submarine --> Nuclear-powered surface ship - Added connection: Modern pencil --> Pencil sharpener - Added connection: Domestication of millet --> Noodles - Added connection: Noodles --> Instant noodles 20 December 2025 - Added tech: Airless tire - Added connection: Pneumatic tire --> Airless tire - Added connection: Polyurethane --> Airless tire - Added connection: Radial tire --> Airless tire 6 December 2025 - Added tech: Rotor ship 5 December 2025 - Added tech: Instant noodles 4 December 2025 - Added tech: Quartz wristwatch - Added connection: Quartz clock --> Quartz wristwatch - Added connection: Wristwatch --> Quartz wristwatch 20 November 2025 - Added tech: Cooling tower - Added tech: Condenser - Added connection: Condenser --> Cooling tower - Added connection: Condenser --> Air conditioner - Added connection: Coal power plant --> Cooling tower 5 October 2025 - Added tech: Small modular reactor - Added connection: Nuclear reactor --> Small modular reactor 4 October 2025 - Added tech: Rammed earth 2 October 2025 - Added tech: Slitting mill - Added connection: Watermill --> Slitting mill - Added connection: Iron smelting and wrought iron --> Slitting mill 28 September 2025 - Added tech: Head-mounted display - Added tech: Two-stroke engine and supercharger - Added connection: Two-stroke engine and supercharger --> Turbocharger - Added connection: Four-stroke engine --> Two-stroke engine and supercharger - Added connection: Integrated circuit computer --> Head-mounted display 27 September 2025 - Added tech: Tea - Added tech: Umbrella 24 September 2025 - Added tech: Goniometer - Added connection: Sector --> Goniometer 22 September 2025 - Added tech: TALEN genome editing - Added connection: Zinc-finger nuclease genome editing --> TALEN genome editing - Added connection: Zinc-finger nuclease genome editing --> CRISPR gene editing 21 September 2025 - Added tech: Polarizing filter - Added tech: Polarizing prism - Added tech: Iceland spar - Added connection: Iceland spar --> Polarizing prism - Added connection: Nitrocellulose film --> Polarizing filter - Added connection: Polarizing prism --> Polarizing filter 19 September 2025 - Added tech: Instant film 18 September 2025 - Added tech: Zinc-finger nuclease genome editing - Added tech: Zinc finger - Added connection: Zinc finger --> Zinc-finger nuclease genome editing - Added connection: Cellulose acetate film --> Instant film 17 September 2025 - Added tech: Candle clock - Added connection: Candle --> Candle clock 16 September 2025 - Added tech: Automatic fire sprinkler - Added connection: Fire extinguisher --> Automatic fire sprinkler 15 September 2025 - Added tech: Fire extinguisher - Added connection: Pewter --> Fire extinguisher - Added connection: Gunpowder --> Fire extinguisher 14 September 2025 - Added tech: Napalm - Added tech: Hydraulic mining - Added connection: Aqueduct --> Hydraulic mining - Added connection: Reservoir --> Hydraulic mining - Added connection: Mining --> Hydraulic mining - Added connection: Vulcanized rubber --> Napalm - Added connection: Gasoline as fuel --> Napalm - Added connection: Napalm --> Fracking - Added connection: Modern oil well --> Fracking 13 September 2025 - Added tech: Herbicide-resistant GMO - Added tech: Glyphosate - Added tech: Electric drip coffee maker - Added tech: Agent Orange - Added connection: Glyphosate --> Herbicide-resistant GMO - Added connection: Domestication of soybeans --> Herbicide-resistant GMO - Added connection: Genetically modified food --> Herbicide-resistant GMO - Added connection: Coffee filter --> Electric drip coffee maker - Added connection: Coffee percolator --> Electric drip coffee maker 12 September 2025 - Added tech: Electric hearing aid - Added connection: Ear trumpet --> Electric hearing aid - Added connection: Carbon microphone --> Electric hearing aid 11 September 2025 - Added tech: Ear trumpet - Added connection: Ear trumpet --> Stethoscope 10 September 2025 - Added tech: Silica gel - Added tech: Industrial porcelain enamel - Added tech: Water glass - Added tech: Ether - Added tech: Vitreous enamel - Added tech: Cloisonné - Added connection: Glass --> Vitreous enamel - Added connection: Cloisonné --> Vitreous enamel - Added connection: Gold --> Cloisonné - Added connection: Vitreous enamel --> Industrial porcelain enamel - Added connection: Cast iron --> Industrial porcelain enamel - Added connection: Iron smelting and wrought iron --> Industrial porcelain enamel - Added connection: Gas mask --> Silica gel - Added connection: Water glass --> Silica gel - Added connection: Vacuum pump --> Artificial refrigeration - Added connection: Ether --> Artificial refrigeration - Added connection: Sulfuric acid --> Ether 8 September 2025 - Added tech: Ketamine - Added tech: Geothermal power plant - Added tech: Geothermal power - Added connection: Geothermal power --> Geothermal power plant 7 September 2025 - Added connection: Kaplan turbine --> Tidal power station 6 September 2025 - Added tech: Tidal power station - Added tech: Chemotherapy - Added tech: Tjasker - Added tech: Tide mill - Added connection: Archimedes' screw --> Tjasker - Added connection: Post windmill --> Tjasker - Added connection: Mustard gas --> Chemotherapy - Added connection: Wind turbine --> Offshore wind farm - Added connection: Watermill --> Tide mill - Added connection: Tide mill --> Tidal power station 5 September 2025 - Added tech: Offshore wind farm 4 September 2025 - Added tech: Carbon-14 - Added tech: Modern pencil - Added tech: Graphite pencil - Added tech: Graphite - Added connection: Carbon-14 --> Automatic teller machine - Added connection: Cyclotron --> Carbon-14 - Added connection: Carbon-14 --> Radiocarbon dating - Added connection: Graphite --> Carbon-14 - Added connection: Graphite --> Graphene - Added connection: Graphite --> Graphite pencil - Added connection: Graphite pencil --> Modern pencil - Added connection: Isotopes --> Carbon-14 - Added connection: Graphite --> Nuclear reactor 3 September 2025 - Added tech: Geographic information system - Added tech: Photogrammetry - Added tech: Pedal harp - Added tech: Zither - Added tech: Harp - Added connection: Musical bow --> Harp - Added connection: Harp --> Pedal harp - Added connection: Harp --> Lyre - Added connection: Zither --> Psaltery - Added connection: Lyre --> Zither - Added connection: Transistor computer --> Geographic information system - Added connection: Photographic camera --> Photogrammetry - Added connection: Photogrammetry --> Geographic information system 2 September 2025 - Added connection: Domestication of the horse --> Saddle - Added connection: Domestication of the horse --> Hipposandal 1 September 2025 - Added tech: Compound bow - Added tech: Liquid crystals - Added tech: Onager - Added tech: Ballista - Added tech: Composite bow - Added tech: Sling - Added connection: Sword --> Shield - Added connection: Hafted spear --> Shield - Added connection: Bow and arrow --> Shield - Added connection: Hafted axe --> Shield - Added connection: Sling --> Shield - Added connection: Bow and arrow --> Composite bow - Added connection: Hafting --> Bow and arrow - Added connection: Composite bow --> Compound bow - Added connection: Pulley --> Compound bow - Added connection: Liquid crystals --> Liquid-crystal display - Added connection: Tin bronze --> Crossbow (China) - Added connection: Crossbow (Greece) --> Ballista - Added connection: Bow and arrow --> Crossbow (China) - Added connection: Composite bow --> Crossbow (Greece) - Added connection: Ballista --> Onager - Added connection: Sling --> Traction trebuchet 30 August 2025 - Added tech: Mustard gas - Added connection: Radium --> Smoke detector - Added connection: Vapor-compression refrigeration system --> Hampson–Linde air liquefaction - Added connection: Triode --> Smoke detector - Added connection: Cigarette --> Smoke detector - Added connection: Mustard gas --> Smoke detector 29 August 2025 - Added tech: Smoke detector - Added tech: Alkaline fuel cell - Added tech: Dishwasher - Added connection: Hydrogen --> Fuel cell - Added connection: Oxygen --> Fuel cell - Added connection: Sulfuric acid --> Fuel cell - Added connection: Voltaic pile --> Fuel cell - Added connection: Fuel cell --> Alkaline fuel cell - Added connection: Alkaline fuel cell --> Reusable spacecraft - Added connection: Porcelain --> Dishwasher 28 August 2025 - Added tech: Chromic acid cell - Added connection: Daniell cell --> Rechargeable battery - Added connection: Sulfuric acid --> Rechargeable battery - Added connection: Linen --> Rechargeable battery - Added connection: Daniell cell --> Chromic acid cell - Added connection: Chromic acid cell --> Electric pen - Added connection: Sulfuric acid --> Chromic acid cell 26 August 2025 - Added connection: Saddle --> Toe stirrup - Added connection: Saddle --> Stirrup - Added connection: Lime --> Limelight - Added connection: Sulfur --> Sulfur match 25 August 2025 - Added tech: Titanium white - Added tech: Zinc white - Added connection: Titanium --> Titanium white - Added connection: Tin --> Printing press - Added connection: Lead --> Printing press - Added connection: Antimony --> Printing press - Added connection: Sulfuric acid --> Titanium white 24 August 2025 - Added tech: Disappearing-filament pyrometer - Added tech: Pyrometer - Added tech: Crucible - Added connection: Offset printing --> Phototypesetting - Added connection: Crucible --> Crucible steel - Added connection: Pottery --> Crucible - Added connection: Control of fire --> Lead - Added connection: Crucible --> Arsenical bronze - Added connection: Crucible --> Brass - Added connection: Pyrometer --> Disappearing-filament pyrometer 23 August 2025 - Added tech: Phototypesetting - Added tech: Hot metal typesetting - Added connection: Hot metal typesetting --> Phototypesetting - Added connection: Movable type --> Hot metal typesetting 22 August 2025 - Added tech: Nomogram - Added connection: Watermill --> Fulling mill 21 August 2025 - Added tech: Video display controller - Added connection: Arcade video game --> Video display controller - Added connection: Keplerian refracting telescope --> Achromatic lens and achromatic telescope - Added connection: Video display controller --> GPU - Added connection: Home computer --> Video display controller - Added connection: Writing (China) --> Video display controller - Added connection: CMOS --> GPU 20 August 2025 - Added tech: Acrylic paint - Added tech: Cadmium pigments - Added tech: Hot-dip galvanization - Added tech: Cadmium - Added connection: Nickel --> Nickel–cadmium battery - Added connection: Nickel–cadmium battery --> Nickel–iron battery - Added connection: Nickel --> Nickel–iron battery - Added connection: Cadmium --> Cadmium pigments - Added connection: Cadmium --> Nickel–cadmium battery - Added connection: Iron smelting and wrought iron --> Corrugated iron 19 August 2025 - Added tech: Spirit duplicator - Added tech: Hectograph - Added tech: Hydrogen peroxide - Added tech: Cobalt blue - Added tech: Lime mortar and plaster - Added tech: Lime - Added connection: Coal tar --> Aniline - Added connection: Aniline --> Spirit duplicator - Added connection: Aniline --> Hectograph - Added connection: Tin --> Cerulean blue - Added connection: Cobalt --> Cobalt blue - Added connection: Blue and white pottery --> Cobalt blue - Added connection: Kelvin scale and absolute zero --> International system of units - Added connection: Lime --> Lime mortar and plaster - Added connection: Lime --> Synthetic ultramarine - Added connection: Construction mortar --> Lime mortar and plaster 18 August 2025 - Added tech: Kermes dye - Added tech: Vermilion - Added connection: Vermilion --> Mercury - Added connection: Pigments --> Vermilion - Added connection: Pigments --> Indigo dye - Added connection: Pigments --> Verdigris - Added connection: Pigments --> White lead - Added connection: Pigments --> Kermes dye - Added connection: Kermes dye --> Cochineal dye - Added connection: Pigments --> Cochineal dye 17 August 2025 - Added tech: Cerulean blue - Added tech: Smalt - Added tech: Natron - Added tech: Egyptian faience - Added connection: Copper smelting --> Egyptian blue - Added connection: Natron --> Egyptian blue - Added connection: Natron --> Proto-soap - Added connection: Natron --> Glass - Added connection: Smalt --> Blue and white pottery - Added connection: Egyptian faience --> Smalt - Added connection: Smalt --> Cobalt - Added connection: Cobalt --> Samarium–cobalt magnet - Added connection: Cobalt --> Cerulean blue - Added connection: Egyptian faience --> Glass - Added connection: Copper smelting --> Egyptian faience 16 August 2025 - Added tech: YInMn blue - Added tech: Maya blue - Added connection: Cotton (New World) --> Indigo dye - Added connection: Indigo dye --> Maya blue 15 August 2025 - Added tech: Smartwatch - Added tech: Digital electronic watch - Added connection: Telephone --> Moving-coil loudspeaker - Added connection: Digital electronic watch --> Smartwatch - Added connection: Wristwatch --> Digital electronic watch - Added connection: LED display --> Digital electronic watch - Added connection: Liquid-crystal display --> Smartwatch - Added connection: Home computer --> Smartwatch 14 August 2025 - Added tech: Decaffeinated coffee - Added tech: Tofu - Added connection: Coffee --> Decaffeinated coffee - Added connection: Benzene --> Decaffeinated coffee - Added connection: Caffeine --> Decaffeinated coffee - Added connection: Fragmentation bomb --> Bombsight - Added connection: Domestication of soybeans --> Tofu 13 August 2025 - Added connection: Electromagnet --> Moving-coil loudspeaker - Added connection: Moving-coil loudspeaker --> Noise-cancelling headphones 12 August 2025 - Added tech: Facial recognition system - Added tech: Moving-coil loudspeaker - Added tech: Cultured pearl - Added connection: Oyster farming --> Cultured pearl 11 August 2025 - Added tech: General-purpose computing on GPU - Added tech: GPU - Added connection: GPU --> General-purpose computing on GPU - Added connection: General-purpose computing on GPU --> AlexNet - Added connection: General-purpose computing on GPU --> Transformer (machine learning) - Added connection: General-purpose computing on GPU --> Generative adversarial network 9 August 2025 - Added tech: Turbocharger - Added tech: Foam extinguisher - Added tech: Firefighting foam - Added tech: Vanadium - Added tech: Galvanism - Added tech: Methane - Added tech: Nickel silver - Added tech: Blue and white pottery - Added tech: Pewter - Added connection: Copper smelting --> Voltaic pile - Added connection: Zinc smelting --> Voltaic pile - Added connection: Galvanism --> Voltaic pile - Added connection: Stamp seal --> Woodblock printing - Added connection: Writing (China) --> Woodblock printing - Added connection: Radial engine --> Turbocharger - Added connection: Weaving and basketry --> Cotton (New World) - Added connection: Weaving and basketry --> Cotton (Old World) - Added connection: Modern oil well --> Firefighting foam - Added connection: Firefighting foam --> Foam extinguisher - Added connection: Sodium bicarbonate --> Firefighting foam - Added connection: Cupronickel --> Nickel silver - Added connection: Porcelain --> Blue and white pottery - Added connection: Blue and white pottery --> Cobalt - Added connection: Tin --> Pewter - Added connection: Lead --> Pewter 7 August 2025 - Added tech: Scanning electron microscope - Added connection: Electron microscope --> Scanning electron microscope 5 August 2025 - Added tech: K'un-lun po - Added connection: Tanja sail --> K'un-lun po 4 August 2025 - Added tech: Quinine - Added tech: Strychnine - Added tech: Jesuit's bark - Added connection: Quinine --> Synthetic dye - Added connection: Jesuit's bark --> Quinine - Added connection: Seaweed farming --> Agar 2 August 2025 - Added tech: Banjo - Added tech: Acetone - Added tech: White lead - Added tech: Verdigris - Added tech: Vinegar - Added connection: Vinegar --> White lead - Added connection: Vinegar --> Verdigris - Added connection: Copper --> Verdigris - Added connection: Lead --> White lead - Added connection: Joule–Thomson effect --> Liquid oxygen 1 August 2025 - Added tech: Malaria vaccine - Added tech: DDT insecticide - Added tech: DDT - Added tech: Coal tar - Added connection: DDT --> DDT insecticide - Added connection: Pine tar --> Coal tar - Added connection: Silicon --> Silicone 31 July 2025 - Added connection: Coal gas and gas lighting --> Gas mantle - Added connection: Radio waves and spark-gap transmitter --> Resonant transformer - Added connection: Alternating current --> Resonant transformer 27 July 2025 - Added tech: Oriented strand board - Added tech: Particle board - Added tech: Harpoon cannon - Added tech: Sperm oil and spermaceti candle - Added tech: Sperm whaling - Added tech: Whale oil - Added tech: Keel - Added tech: Shield - Added tech: Whaling - Added connection: Sperm oil and spermaceti candle --> Petroleum jelly - Added connection: Harpoon --> Whaling - Added connection: Boat --> Whaling - Added connection: Phoenician joint --> Keel - Added connection: Keel --> Cog - Added connection: Whaling --> Whale oil - Added connection: Cannon --> Harpoon cannon - Added connection: Harpoon --> Harpoon cannon - Added connection: Whaling --> Harpoon cannon - Added connection: Whaling --> Sperm whaling - Added connection: Sperm whaling --> Sperm oil and spermaceti candle - Added connection: Whale oil --> Sperm oil and spermaceti candle - Added connection: Candle --> Sperm oil and spermaceti candle 26 July 2025 - v1.0.4: Subfields 24 July 2025 - v1.0.3: Info icons for connection details 21 July 2025 - Added tech: Alexanderson alternator - Added tech: Arc converter - Added tech: Singing arc - Added connection: Leyden jar --> Radio waves and spark-gap transmitter - Added connection: Arc lamp --> Singing arc - Added connection: Singing arc --> Arc converter - Added connection: Wireless telegraphy --> Arc converter - Added connection: Moving-coil oscillograph --> Singing arc - Added connection: Wireless telegraphy --> Alexanderson alternator - Added connection: Amplitude modulation --> Alexanderson alternator - Added connection: Amplitude modulation --> Arc converter 19 July 2025 - Added tech: Combination lock - Added tech: Padlock - Added connection: Egyptian wooden pin tumbler lock --> Combination lock - Added connection: Egyptian wooden pin tumbler lock --> Padlock 17 July 2025 - Added tech: Fuel pump - Added connection: Kerosene lamp --> Fuel pump 16 July 2025 - Added tech: Bread - Added connection: Bread --> Leavened bread - Added connection: Control of fire --> Bread - Added connection: Mortar and pestle --> Bread 15 July 2025 - Added tech: Gyro gunsight - Added tech: Reflector sight - Added tech: Artificial horizon - Added tech: Telescopic sight - Added connection: Slide rule --> Vector bombsight - Added connection: Geiger counter --> Radiocarbon dating - Added connection: Keplerian refracting telescope --> Telescopic sight - Added connection: Telescopic sight --> Reflector sight - Added connection: Reflector sight --> Gyro gunsight - Added connection: Gyroscope --> Gyro gunsight - Added connection: Gyroscope --> Tachometric bombsight 13 July 2025 - Added connection: Fire-control system --> Automated anti-aircraft fire-control system 12 July 2025 - Added tech: Interstellar probe - Added tech: Tachometric bombsight - Added tech: Vector bombsight - Added tech: Kelvite sounding machine - Added tech: Sounding machine - Added tech: Depth sounding - Added connection: Airplane --> Bombsight - Added connection: Bombsight --> Vector bombsight - Added connection: Vector bombsight --> Tachometric bombsight - Added connection: Ball-and-disk integrator --> Tachometric bombsight - Added connection: Tide-predicting machine --> Ball-and-disk integrator - Added connection: Piano --> Kelvite sounding machine - Added connection: Depth sounding --> Sounding machine - Added connection: Sounding machine --> Kelvite sounding machine 10 July 2025 - Added tech: Bombsight 9 July 2025 - Added tech: Fire-control system - Added tech: Dumaresq - Added tech: Ball-and-disk integrator - Added tech: Tide-predicting machine - Added tech: Hydrochloric acid - Added tech: Aqua regia - Added tech: Ammonium chloride - Added connection: Ammonium chloride --> Aqua regia - Added connection: Nitric acid --> Aqua regia - Added connection: Ammonium chloride --> Hydrochloric acid - Added connection: Sulfuric acid --> Hydrochloric acid - Added connection: Ball-and-disk integrator --> Fire-control system 6 July 2025 - Added tech: Automated anti-aircraft fire-control system - Added tech: Box kite - Added tech: Kite experiment - Added tech: Kite - Added connection: Kite --> Box kite - Added connection: Kite --> Kite experiment - Added connection: Kite experiment --> Lightning rod - Added connection: Leyden jar --> Kite experiment - Added connection: Box kite --> Airplane - Added connection: Papermaking --> Kite - Added connection: Motorcycle --> Rotary engine - Added connection: Automated anti-aircraft fire-control system --> Computer-generated imagery 5 July 2025 - Added tech: Proportional counter - Added tech: Geiger counter - Added tech: Radial engine - Added tech: Rotary engine - Added connection: Radioactivity --> Geiger counter - Added connection: Geiger counter --> Proportional counter - Added connection: Tin can --> Hovercraft - Added connection: Handheld hair dryer --> Hovercraft - Added connection: Four-stroke engine --> Rotary engine - Added connection: Rotary engine --> Radial engine - Added connection: Radial engine --> Hovercraft - Added connection: Gasoline as fuel --> Airplane 4 July 2025 - Added tech: Leaded gasoline - Added tech: Gasoline as fuel - Added connection: Lead --> Rechargeable battery - Added connection: Coal gas and gas lighting --> Four-stroke engine - Added connection: Kerosene --> Diesel engine - Added connection: Kerosene --> Gasoline as fuel - Added connection: Gasoline as fuel --> Leaded gasoline - Added connection: Gasoline as fuel --> Automobile - Added connection: Gasoline as fuel --> Shukhov cracking process - Added connection: Four-stroke engine --> Gasoline as fuel - Added connection: Gasoline as fuel --> Liquid-propellant rocket 1 July 2025 - Added tech: Alum - Added connection: Alum --> Aluminium 29 June 2025 - Added tech: Measles vaccine - Added connection: Polio vaccine --> Measles vaccine 27 June 2025 - Added tech: Virtual assistant - Added tech: Stealth aircraft - Added connection: Multi-touch smartphone --> Virtual assistant - Added connection: Speech recognition software --> Virtual assistant - Added connection: Long short-term memory --> Virtual assistant - Added connection: Convolutional neural network --> Virtual assistant - Added connection: Virtual assistant --> Smart speaker - Added connection: Surface-to-air missile --> Stealth aircraft - Added connection: Supercomputer --> Stealth aircraft - Added connection: Radar --> Stealth aircraft - Added connection: Fighter aircraft --> Stealth aircraft - Added connection: Statistical language model --> Speech recognition software 25 June 2025 - Added tech: Portable operating system - Added connection: Integrated circuit computer --> Computer mouse - Added connection: Operating system --> Portable operating system - Added connection: Time-sharing --> Portable operating system - Added connection: Lidar --> Robotaxi 24 June 2025 - Added tech: Computer mouse - Added tech: Baking powder - Added tech: Sodium bicarbonate - Added tech: Cream of tartar - Added connection: Cream of tartar --> Baking powder - Added connection: Sodium bicarbonate --> Baking powder 20 June 2025 - Added tech: Phage therapy - Added tech: Bacteriophages - Added tech: Benzene - Added connection: Discovery of viruses --> Bacteriophages - Added connection: Bacteriophages --> Phage display - Added connection: Bacteriophages --> Phage therapy - Added connection: Smallpox vaccine --> Bacteriophages - Added connection: Chamberland water filter --> Bacteriophages - Added connection: Neon --> Isotopes - Added connection: Public gas lighting --> Benzene 18 June 2025 - Added tech: Operating system - Added connection: Stored-program computer --> Operating system 16 June 2025 - Added tech: Electroconvulsive therapy - Added tech: Convulsive therapy - Added tech: Tuberculosis vaccine - Added connection: Smallpox vaccine --> Tuberculosis vaccine - Added connection: Convulsive therapy --> Electroconvulsive therapy 14 June 2025 - Added tech: Timpani - Added connection: Drum --> Timpani 13 June 2025 - Added tech: Palm-leaf manuscript - Added tech: Birch bark manuscript 12 June 2025 - Added tech: Antivirus software - Added tech: Philo's thermoscope - Added connection: Home computer --> Antivirus software - Added connection: Philo's thermoscope --> Thermoscope 11 June 2025 - Added tech: Autoclaved aerated concrete - Added tech: Discovery of viruses - Added tech: Chamberland water filter - Added tech: Autoclave - Added connection: Flute --> Western concert flute - Added connection: Modern Portland cement --> Autoclaved aerated concrete - Added connection: Pressure cooker --> Autoclave - Added connection: Autoclave --> Autoclaved aerated concrete - Added connection: Chamberland water filter --> Discovery of viruses - Added connection: Agar plate --> Discovery of viruses - Added connection: Tobacco --> Discovery of viruses 10 June 2025 - Added tech: Photonic crystal - Added tech: Genetic code - Added tech: Messenger RNA - Added tech: Petroleum jelly - Added connection: Photonic crystal --> Photonic-crystal fiber - Added connection: Kerosene --> Petroleum jelly - Added connection: Petroleum as fuel --> Petroleum jelly - Added connection: Messenger RNA --> mRNA vaccine - Added connection: DNA as the carrier of information --> Structure of DNA - Added connection: Structure of DNA --> Genetic code - Added connection: Central dogma of molecular biology --> Genetic code - Added connection: Central dogma of molecular biology --> Messenger RNA 9 June 2025 - v1.0.2: Display settings - Added tech: Bass guitar - Added tech: Lap steel guitar - Added tech: Double bass - Added tech: Marimba - Added connection: Marimba --> Marimbaphone - Added connection: Xylophone --> Marimba - Added connection: Double bass --> Bass guitar - Added connection: Modern guitar --> Lap steel guitar - Added connection: Lap steel guitar --> Electric guitar - Added connection: Lap steel guitar --> Bass guitar 8 June 2025 - Added tech: Cyanoacrylate - Added tech: Zoom lens - Added tech: Vibraphone - Added tech: Marimbaphone - Added tech: Corrugated fiberboard - Added tech: Trumpet with pistons - Added tech: Tuba - Added tech: Repeating circle - Added tech: Reflecting circle - Added tech: Cardboard - Added tech: Oboe - Added tech: Bassoon - Added tech: Dulcian - Added tech: Trombone - Added tech: Clavichord - Added tech: Shawm - Added tech: Buisine - Added connection: Papermaking --> Cardboard - Added connection: Cardboard --> Corrugated fiberboard - Added connection: Corrugated fiberboard --> Pre-cut cardboard box - Added connection: Movie camera --> Zoom lens - Added connection: Reflecting circle --> Repeating circle - Added connection: Telescope --> Reflecting circle - Added connection: Octant --> Reflecting circle - Added connection: Trumpet --> Buisine - Added connection: Buisine --> Trombone - Added connection: Marimbaphone --> Vibraphone - Added connection: Buisine --> Trumpet with pistons - Added connection: Buisine --> Tuba - Added connection: Pipe organ --> Clavichord - Added connection: Shawm --> Oboe - Added connection: Dulcian --> Bassoon - Added connection: Shawm --> Dulcian - Added connection: Aulos --> Shawm - Added connection: Violin, viola, and cello --> Double bass - Added connection: Viola da gamba --> Double bass 7 June 2025 - Added tech: Quantum annealing - Added tech: Transmon - Added tech: Charge qubit - Added tech: Flux qubit - Added tech: Mammal cloning - Added tech: Artificial heart - Added tech: SQUID - Added tech: Dilution refrigerator - Added tech: Josephson junction - Added tech: Animal cloning from adult cells - Added tech: Animal cloning - Added tech: Kroll process - Added tech: Helium-3 - Added tech: Tritium - Added tech: Nuclear fusion - Added tech: Deuterium - Added tech: Electric chainsaw - Added tech: Somatic cell nuclear transfer - Added tech: Hunter process - Added tech: Indium - Added tech: Bayonet - Added connection: Mammal cloning --> Induced pluripotent stem cell - Added connection: Titanium --> Hunter process - Added connection: Magnesium --> Kroll process - Added connection: Hunter process --> Kroll process - Added connection: Kroll process --> Lithium battery pacemaker - Added connection: Josephson junction --> SQUID - Added connection: Superconductors --> Josephson junction - Added connection: Magnetometer --> SQUID - Added connection: Quantum tunneling --> Josephson junction - Added connection: Somatic cell nuclear transfer --> Animal cloning - Added connection: Animal cloning from adult cells --> Mammal cloning - Added connection: Animal cloning --> Animal cloning from adult cells - Added connection: Frog pregnancy test --> Animal cloning from adult cells - Added connection: Transmon --> Quantum computer - Added connection: Dilution refrigerator --> Quantum computer - Added connection: Charge qubit --> Transmon - Added connection: Josephson junction --> Charge qubit - Added connection: Cyclotron --> Nuclear fusion - Added connection: Quantum tunneling --> Nuclear fusion - Added connection: Nuclear fusion --> Helium-3 - Added connection: Nuclear fusion --> Hydrogen bomb - Added connection: Helium-3 --> Dilution refrigerator - Added connection: Isotopes --> Helium-3 - Added connection: Isotopes --> Deuterium - Added connection: Deuterium --> Nuclear fusion - Added connection: Nuclear fusion --> Tokamak - Added connection: Hampson–Linde air liquefaction --> Deuterium - Added connection: Isotopes --> Tritium - Added connection: Mass spectrometer --> Deuterium - Added connection: Quantum tunneling --> Quantum annealing - Added connection: Flux qubit --> Quantum annealing - Added connection: Josephson junction --> Flux qubit - Added connection: Arquebus and matchlock --> Bayonet - Added connection: Indium --> Blue LED - Added connection: Chromatography --> DNA ligase 6 June 2025 - Added tech: Domestication of millet - Added connection: Irrigation --> Shaduf 5 June 2025 - v1.0.1: Changelog start - Added tech: Ostwald nitric acid process - Added tech: Leavened bread - Added tech: Domestication of potatoes - Added connection: Restriction enzymes --> DNA profiling - Added connection: Domestication of wheat --> Leavened bread - Added connection: Leavened bread --> Electric toaster - Added connection: Nitric acid --> Ostwald nitric acid process 4 June 2025 - Added tech: Advanced Encryption Standard - Added tech: Data Encryption Standard - Added tech: Hardware security module - Added tech: Modern cryptography - Added tech: One-time pad - Added tech: Frequency analysis - Added tech: Dhow - Added tech: Domestication of coconuts - Added connection: One-time pad --> Modern cryptography - Added connection: Information theory --> Modern cryptography - Added connection: Modern cryptography --> Public-key cryptography - Added connection: Automatic teller machine --> Hardware security module - Added connection: Public-key cryptography --> Digital currency - Added connection: Hardware security module --> Data Encryption Standard - Added connection: Data Encryption Standard --> Advanced Encryption Standard - Added connection: Modern cryptography --> Hardware security module - Added connection: Modern cryptography --> Data Encryption Standard - Added connection: Braille --> Optacon - Added connection: Lashed-lug boat building --> Dhow - Added connection: Domestication of coconuts --> Dhow - Added connection: Lateen and settee sail --> Dhow 3 June 2025 - Added tech: Paper clip - Added tech: Aniline - Added tech: Paddy field - Added connection: Domestication of rice --> Paddy field - Added connection: Indigo dye --> Aniline - Added connection: Aniline --> Paracetamol 2 June 2025 - Added tech: Laser cutting - Added tech: Carbon-dioxide laser - Added tech: Nd:YAG laser - Added connection: Eyeglasses --> Telescope - Added connection: Hafting --> Sickle - Added connection: Laser --> Carbon-dioxide laser - Added connection: Laser --> Nd:YAG laser - Added connection: Neodymium --> Nd:YAG laser - Added connection: Nd:YAG laser --> Laser cutting - Added connection: Carbon-dioxide laser --> Laser cutting 26 May 2025 - v1.0: First public release 9 November 2024 - v0.0: Start of app development