Techs catalog

Techrequirements 	Description	Allows (Units, Buildings, Techs) /Obsoletes (Units, Buildings)
Advanced Flight
Radio,
Machine Tools	
Total techs requirements: 55
Total bulbs required: 44,370	
* Bomber
* Carrier
* AWACS
* Combined Arms (with Mobile Warfare)
* Rocketry (with Electronics)
* Stealth (with Superconductors)
Alphabet 	
Total techs requirements: 0
Total bulbs required: 28	
* Code of Laws
* Map Making
* Mathematics (with Masonry)
* Writing
Amphibious Warfare
Navigation,
Tactics	
Total techs requirements: 36
Total bulbs required: 12,889	
* Marines
* Port Facility
Astronomy
Mysticism,
Mathematics	
Total techs requirements: 5
Total bulbs required: 400	
* Copernicus' Observatory (W)
* Navigation (with Seafaring)
* Theory of Gravity (with University)
Atomic Theory
Theory of Gravity,
Physics	
Total techs requirements: 17
Total bulbs required: 3,633	
* Nuclear Fission (with Mass Production)
Automobile
Combustion,
Steel	
Total techs requirements: 44
Total bulbs required: 28,118
* Increases the pollution generated by the population.	
* Battleship
* Super Highways
* Mass Production (with The Corporation)
* Mobile Warfare (with Tactics)
Automobile
Combustion,
Steel	
Total techs requirements: 44
Total bulbs required: 28,118
* Increases the pollution generated by the population.	
* Leonardo's Workshop (W)
Banking
Trade,
The Republic	
Total techs requirements: 8
Total bulbs required: 928	
* Bank
* Democracy (with Invention)
* Economics (with University)
* Industrialization (with Railroad)
Bridge Building
Iron Working,
Construction	
Total techs requirements: 6
Total bulbs required: 552
* Allows Engineers, Workers and Settlers to build roads on river squares.	
* Railroad (with Steam Engine)
Bronze Working 	
Total techs requirements: 0
Total bulbs required: 28	
* Phalanx
* Colossus (W)
* Currency
* Iron Working (with Warrior Code)
Ceremonial Burial	
Total techs requirements: 0
Total bulbs required: 28	
* Temple
* Monarchy (with Code of Laws)
* Mysticism
* Polytheism (with Horseback Riding)
Chemistry
University,
Medicine	
Total techs requirements: 14
Total bulbs required: 2,298	
* Explosives (with Gunpowder)
* Refining (with The Corporation)
Chivalry
Feudalism,
Horseback Riding	
Total techs requirements: 7
Total bulbs required: 729	
* Knights
* Leadership (with Gunpowder)
Chivalry
Feudalism,
Horseback Riding	
Total techs requirements: 7
Total bulbs required: 729	
* Horsemen
* Chariot
Code of Laws
Alphabet	
Total techs requirements: 1
Total bulbs required: 79	
* Courthouse
* Literacy (with Writing)
* Monarchy (with Ceremonial Burial)
* The Republic (with Literacy)
* Trade (with Currency)
Combined Arms
Mobile Warfare,
Advanced Flight	
Total techs requirements: 58
Total bulbs required: 56,104	
* Paratroopers
* Helicopter
Combustion
Refining,
Explosives	
Total techs requirements: 39
Total bulbs required: 19,155	
* Submarine
* Automobile (with Steel)
* Flight (with Theory of Gravity)
Communism
Philosophy,
Industrialization	
Total techs requirements: 31
Total bulbs required: 10,004
* Allows changing government to Communism.
* Reduces the effect of Cathedrals.	
* Police Station
* United Nations (W)
* Espionage (with Democracy)
* Guerilla Warfare (with Tactics)
Communism
Philosophy,
Industrialization	
Total techs requirements: 31
Total bulbs required: 10,004
* Allows changing government to Communism.
* Reduces the effect of Cathedrals.	
* Marco Polo's Embassy (W)
Computers
Mass Production,
Miniaturization	
Total techs requirements: 56
Total bulbs required: 50,380	
* Research Lab
* SETI Program (W)
* Robotics (with Mobile Warfare)
* Space Flight (with Rocketry)
Conscription
Democracy,
Metallurgy	
Total techs requirements: 25
Total bulbs required: 6,470	
* Riflemen
* Tactics (with Leadership)
Conscription
Democracy,
Metallurgy	
Total techs requirements: 25
Total bulbs required: 6,470	
* Musketeers
Construction
Masonry,
Currency	
Total techs requirements: 3
Total bulbs required: 218
* Allows Engineers, Workers and Settlers to build fortresses.	
* Aqueduct
* Colosseum
* Bridge Building (with Iron Working)
* Engineering (with The Wheel)
Currency
Bronze Working	
Total techs requirements: 1
Total bulbs required: 79	
* Marketplace
* Construction (with Masonry)
* Trade (with Code of Laws)
Democracy
Banking,
Invention	
Total techs requirements: 15
Total bulbs required: 2,540
* Allows changing government to Democracy.	
* Statue of Liberty (W)
* Conscription (with Metallurgy)
* Espionage (with Communism)
* Recycling (with Mass Production)
Economics
Banking,
University	
Total techs requirements: 15
Total bulbs required: 2,405	
* Stock Exchange
* A.Smith's Trading Co. (W)
* The Corporation (with Industrialization)
Electricity
Metallurgy,
Magnetism	
Total techs requirements: 28
Total bulbs required: 7,550
* Improves the effect of Colosseums.	
* Destroyer
* Electronics (with The Corporation)
* Radio (with Flight)
* Refrigeration (with Sanitation)
* Steel (with Industrialization)
Electricity
Metallurgy,
Magnetism	
Total techs requirements: 28
Total bulbs required: 7,550
* Improves the effect of Colosseums.	
* Ironclad
* Great Library (W)
Electronics
The Corporation,
Electricity	
Total techs requirements: 38
Total bulbs required: 17,914	
* Hydro Plant
* Hoover Dam (W)
* Miniaturization (with Machine Tools)
* Nuclear Power (with Nuclear Fission)
* Rocketry (with Advanced Flight)
Engineering
The Wheel,
Construction	
Total techs requirements: 6
Total bulbs required: 523	
* King Richard's Crusade (W)
* Invention (with Literacy)
* Sanitation (with Medicine)
Environmentalism
Recycling,
Space Flight	
Total techs requirements: 64
Total bulbs required: 79,634	
* Solar Plant
Espionage
Communism,
Democracy	
Total techs requirements: 33
Total bulbs required: 12,774	
* Spy
Espionage
Communism,
Democracy	
Total techs requirements: 33
Total bulbs required: 12,774	
* Diplomat
Explosives
Gunpowder,
Chemistry	
Total techs requirements: 23
Total bulbs required: 5,180	
* Engineers
* Combustion (with Refining)
Explosives
Gunpowder,
Chemistry	
Total techs requirements: 23
Total bulbs required: 5,180	
* Workers
Feudalism
Warrior Code,
Monarchy	
Total techs requirements: 5
Total bulbs required: 431	
* Pikemen
* Sun Tzu's War Academy (W)
* Chivalry (with Horseback Riding)
* Theology (with Monotheism)
Feudalism
Warrior Code,
Monarchy	
Total techs requirements: 5
Total bulbs required: 431	
* Warriors
* Phalanx
Flight
Combustion,
Theory of Gravity	
Total techs requirements: 41
Total bulbs required: 22,442
* Decreases one-time revenue from new trade routes.	
* Fighter
* Radio (with Electricity)
Flight
Combustion,
Theory of Gravity	
Total techs requirements: 41
Total bulbs required: 22,442
* Decreases one-time revenue from new trade routes.	
* Colossus (W)
Fusion Power
Nuclear Power,
Superconductors	
Total techs requirements: 53
Total bulbs required: 54,353	
Genetic Engineering
Medicine,
The Corporation	
Total techs requirements: 35
Total bulbs required: 13,908	
* Cure For Cancer (W)
Guerilla Warfare
Communism,
Tactics	
Total techs requirements: 42
Total bulbs required: 20,397	
* Partisan
* Labor Union (with Mass Production)
Guerilla Warfare
Communism,
Tactics	
Total techs requirements: 42
Total bulbs required: 20,397	
* Explorer
Gunpowder
Invention,
Iron Working	
Total techs requirements: 14
Total bulbs required: 1,980	
* Musketeers
* Barracks II
* Coastal Defense
* Explosives (with Chemistry)
* Leadership (with Chivalry)
* Metallurgy (with University)
Gunpowder
Invention,
Iron Working	
Total techs requirements: 14
Total bulbs required: 1,980	
* Archers
* Legion
* Pikemen
* Barracks
Horseback Riding 	
Total techs requirements: 0
Total bulbs required: 28	
* Horsemen
* Chivalry (with Feudalism)
* Polytheism (with Ceremonial Burial)
* The Wheel
Industrialization
Railroad,
Banking	
Total techs requirements: 29
Total bulbs required: 7,883
* Increases the pollution generated by the population.	
* Transport
* Factory
* Women's Suffrage (W)
* Communism (with Philosophy)
* Steel (with Electricity)
* The Corporation (with Economics)
Industrialization
Railroad,
Banking	
Total techs requirements: 29
Total bulbs required: 7,883
* Increases the pollution generated by the population.	
* Galleon
Invention
Engineering,
Literacy	
Total techs requirements: 11
Total bulbs required: 1,232
* Increases units' vision when in fortresses.	
* Leonardo's Workshop (W)
* Democracy (with Banking)
* Gunpowder (with Iron Working)
* Steam Engine (with Physics)
Iron Working
Bronze Working,
Warrior Code	
Total techs requirements: 2
Total bulbs required: 136	
* Legion
* Bridge Building (with Construction)
* Gunpowder (with Invention)
* Magnetism (with Physics)
Labor Union
Mass Production,
Guerilla Warfare	
Total techs requirements: 55
Total bulbs required: 45,896	
* Mech. Inf.
Laser
Mass Production,
Nuclear Power	
Total techs requirements: 51
Total bulbs required: 46,307	
* SDI Defense
* Superconductors (with Nuclear Power)
Leadership
Chivalry,
Gunpowder	
Total techs requirements: 19
Total bulbs required: 3,536	
* Dragoons
* Tactics (with Conscription)
Leadership
Chivalry,
Gunpowder	
Total techs requirements: 19
Total bulbs required: 3,536	
* Knights
Literacy
Writing,
Code of Laws	
Total techs requirements: 3
Total bulbs required: 241	
* Great Library (W)
* Invention (with Engineering)
* Philosophy (with Mysticism)
* Physics (with Navigation)
* The Republic (with Code of Laws)
Machine Tools
Steel,
Tactics	
Total techs requirements: 44
Total bulbs required: 23,516	
* Artillery
* Advanced Flight (with Radio)
* Miniaturization (with Electronics)
Machine Tools
Steel,
Tactics	
Total techs requirements: 44
Total bulbs required: 23,516	
* Cannon
Magnetism
Iron Working,
Physics	
Total techs requirements: 17
Total bulbs required: 2,711	
* Galleon
* Frigate
* Electricity (with Metallurgy)
Magnetism
Iron Working,
Physics	
Total techs requirements: 17
Total bulbs required: 2,711	
* Caravel
* Lighthouse (W)
Map Making
Alphabet	
Total techs requirements: 1
Total bulbs required: 79	
* Trireme
* Lighthouse (W)
* Seafaring (with Pottery)
Masonry 	
Total techs requirements: 0
Total bulbs required: 28	
* City Walls
* Palace
* Great Wall (W)
* Pyramids (W)
* Construction (with Currency)
* Mathematics (with Alphabet)
Mass Production
Automobile,
The Corporation	
Total techs requirements: 45
Total bulbs required: 31,340
* Increases the pollution generated by the population.	
* Mass Transit
* Computers (with Miniaturization)
* Labor Union (with Guerilla Warfare)
* Laser (with Nuclear Power)
* Nuclear Fission (with Atomic Theory)
* Recycling (with Democracy)
Mathematics
Alphabet,
Masonry	
Total techs requirements: 2
Total bulbs required: 136	
* Catapult
* Astronomy (with Mysticism)
* University (with Philosophy)
Medicine
Philosophy,
Trade	
Total techs requirements: 10
Total bulbs required: 1,186	
* Shakespeare's Theatre (W)
* Chemistry (with University)
* Genetic Engineering (with The Corporation)
* Sanitation (with Engineering)
Metallurgy
Gunpowder,
University	
Total techs requirements: 20
Total bulbs required: 3,760	
* Cannon
* Conscription (with Democracy)
* Electricity (with Magnetism)
Metallurgy
Gunpowder,
University	
Total techs requirements: 20
Total bulbs required: 3,760	
* Catapult
* Great Wall (W)
Miniaturization
Machine Tools,
Electronics	
Total techs requirements: 48
Total bulbs required: 32,350	
* Offshore Platform
* Computers (with Mass Production)
Mobile Warfare
Automobile,
Tactics	
Total techs requirements: 52
Total bulbs required: 37,526	
* Armor
* Barracks III
* Combined Arms (with Advanced Flight)
* Robotics (with Computers)
Mobile Warfare
Automobile,
Tactics	
Total techs requirements: 52
Total bulbs required: 37,526	
* Cavalry
* Barracks II
* Sun Tzu's War Academy (W)
Monarchy
Ceremonial Burial,
Code of Laws	
Total techs requirements: 3
Total bulbs required: 218
* Allows changing government to Monarchy.	
* Feudalism (with Warrior Code)
Monotheism
Philosophy,
Polytheism	
Total techs requirements: 9
Total bulbs required: 1,018	
* Cathedral
* Michelangelo's Chapel (W)
* Theology (with Feudalism)
Mysticism
Ceremonial Burial	
Total techs requirements: 1
Total bulbs required: 79
* Improves the effect of Temples.	
* Oracle (W)
* Astronomy (with Mathematics)
* Philosophy (with Literacy)
Navigation
Seafaring,
Astronomy	
Total techs requirements: 9
Total bulbs required: 954
* Reduces the chance of losing boats on the high seas to 12%.	
* Caravel
* Magellan's Expedition (W)
* Amphibious Warfare (with Tactics)
* Physics (with Literacy)
Navigation
Seafaring,
Astronomy	
Total techs requirements: 9
Total bulbs required: 954
* Reduces the chance of losing boats on the high seas to 12%.	
* Trireme
Nuclear Fission
Mass Production,
Atomic Theory	
Total techs requirements: 48
Total bulbs required: 36,171	
* Manhattan Project (W)
* Nuclear Power (with Electronics)
Nuclear Power
Nuclear Fission,
Electronics	
Total techs requirements: 50
Total bulbs required: 42,449
* Gives sea units one extra move.	
* Nuclear Plant
* Fusion Power (with Superconductors)
* Laser (with Mass Production)
* Superconductors (with Laser)
Philosophy
Mysticism,
Literacy	
Total techs requirements: 6
Total bulbs required: 546
* The first player to research Philosophy gets an immediate advance.	
* Communism (with Industrialization)
* Medicine (with Trade)
* Monotheism (with Polytheism)
* University (with Mathematics)
Physics
Literacy,
Navigation	
Total techs requirements: 13
Total bulbs required: 1,747	
* Atomic Theory (with Theory of Gravity)
* Magnetism (with Iron Working)
* Steam Engine (with Invention)
Plastics
Refining,
Space Flight	
Total techs requirements: 63
Total bulbs required: 76,083
* Increases the pollution generated by the population.	
* Space Component
Polytheism
Horseback Riding,
Ceremonial Burial	
Total techs requirements: 2
Total bulbs required: 136	
* Monotheism (with Philosophy)
Pottery 	
Total techs requirements: 0
Total bulbs required: 28	
* Workers
* Granary
* Hanging Gardens (W)
* Seafaring (with Map Making)
Radio
Flight,
Electricity	
Total techs requirements: 45
Total bulbs required: 29,166
* Allows Engineers and Workers to build airbases.	
* Airport
* Advanced Flight (with Machine Tools)
Railroad
Steam Engine,
Bridge Building	
Total techs requirements: 25
Total bulbs required: 5,549
* Allows Engineers, Workers and Settlers to upgrade roads to railroads.
* Decreases one-time revenue from new trade routes.	
* Darwin's Voyage (W)
* Industrialization (with Banking)
Railroad
Steam Engine,
Bridge Building	
Total techs requirements: 25
Total bulbs required: 5,549
* Allows Engineers, Workers and Settlers to upgrade roads to railroads.
* Decreases one-time revenue from new trade routes.	
* Hanging Gardens (W)
Recycling
Mass Production,
Democracy	
Total techs requirements: 47
Total bulbs required: 35,470	
* Recycling Center
* Environmentalism (with Space Flight)
Refining
Chemistry,
The Corporation	
Total techs requirements: 36
Total bulbs required: 14,640	
* Power Plant
* Combustion (with Explosives)
* Plastics (with Space Flight)
Refrigeration
Sanitation,
Electricity	
Total techs requirements: 32
Total bulbs required: 10,856
* Allows Engineers, Workers and Settlers to upgrade irrigation to farmland.	
* Supermarket
Robotics
Mobile Warfare,
Computers	
Total techs requirements: 58
Total bulbs required: 58,995	
* Howitzer
* Mfg. Plant
Robotics
Mobile Warfare,
Computers	
Total techs requirements: 58
Total bulbs required: 58,995	
* Artillery
* King Richard's Crusade (W)
Rocketry
Advanced Flight,
Electronics	
Total techs requirements: 57
Total bulbs required: 51,430	
* AEGIS Cruiser
* Cruise Missile
* Nuclear
* SAM Battery
* Space Flight (with Computers)
Rocketry
Advanced Flight,
Electronics	
Total techs requirements: 57
Total bulbs required: 51,430	
* Cruiser
Sanitation
Engineering,
Medicine	
Total techs requirements: 16
Total bulbs required: 2,393	
* Sewer System
* Refrigeration (with Electricity)
Seafaring
Pottery,
Map Making	
Total techs requirements: 3
Total bulbs required: 218
* Reduces the chance of losing boats on the high seas to 25%.	
* Explorer
* Harbour
* Navigation (with Astronomy)
Space Flight
Computers,
Rocketry	
Total techs requirements: 62
Total bulbs required: 70,843	
* Space Structural
* Apollo Program (W)
* Environmentalism (with Recycling)
* Plastics (with Refining)
Stealth
Superconductors,
Advanced Flight	
Total techs requirements: 64
Total bulbs required: 74,539	
* Stealth Fighter
* Stealth Bomber
Stealth
Superconductors,
Advanced Flight	
Total techs requirements: 64
Total bulbs required: 74,539	
* Fighter
* Bomber
Steam Engine
Physics,
Invention	
Total techs requirements: 21
Total bulbs required: 3,813	
* Ironclad
* Eiffel Tower (W)
* Railroad (with Bridge Building)
Steam Engine
Physics,
Invention	
Total techs requirements: 21
Total bulbs required: 3,813	
* Frigate
Steel
Electricity,
Industrialization	
Total techs requirements: 36
Total bulbs required: 14,957	
* Cruiser
* Automobile (with Combustion)
* Machine Tools (with Tactics)
Superconductors
Nuclear Power,
Laser	
Total techs requirements: 52
Total bulbs required: 50,275	
* Space Module
* Fusion Power (with Nuclear Power)
* Stealth (with Advanced Flight)
Tactics
Conscription,
Leadership	
Total techs requirements: 30
Total bulbs required: 9,808	
* Alpine Troops
* Cavalry
* Amphibious Warfare (with Navigation)
* Guerilla Warfare (with Communism)
* Machine Tools (with Steel)
* Mobile Warfare (with Automobile)
Tactics
Conscription,
Leadership	
Total techs requirements: 30
Total bulbs required: 9,808	
* Dragoons
The Corporation
Economics,
Industrialization	
Total techs requirements: 33
Total bulbs required: 11,243	
* Freight
* Electronics (with Electricity)
* Genetic Engineering (with Medicine)
* Mass Production (with Automobile)
* Refining (with Chemistry)
The Corporation
Economics,
Industrialization	
Total techs requirements: 33
Total bulbs required: 11,243	
* Caravan
The Republic
Code of Laws,
Literacy	
Total techs requirements: 4
Total bulbs required: 387
* Allows changing government to Republic.	
* Banking (with Trade)
The Wheel
Horseback Riding	
Total techs requirements: 1
Total bulbs required: 79	
* Chariot
* Engineering (with Construction)
Theology
Feudalism,
Monotheism	
Total techs requirements: 13
Total bulbs required: 1,922
* Improves the effect of Cathedrals.	
* J.S. Bach's Cathedral (W)
Theology
Feudalism,
Monotheism	
Total techs requirements: 13
Total bulbs required: 1,922
* Improves the effect of Cathedrals.	
* Oracle (W)
Theory of Gravity
Astronomy,
University	
Total techs requirements: 11
Total bulbs required: 1,671	
* Isaac Newton's College (W)
* Atomic Theory (with Physics)
* Flight (with Combustion)
Trade
Currency,
Code of Laws	
Total techs requirements: 4
Total bulbs required: 304	
* Caravan
* Marco Polo's Embassy (W)
* Banking (with The Republic)
* Medicine (with Philosophy)
University
Mathematics,
Philosophy	
Total techs requirements: 9
Total bulbs required: 1,018	
* University
* Chemistry (with Medicine)
* Economics (with Banking)
* Metallurgy (with Gunpowder)
* Theory of Gravity (with Astronomy)
Warrior Code 	
Total techs requirements: 0
Total bulbs required: 28	
* Archers
* Feudalism (with Monarchy)
* Iron Working (with Bronze Working)
Writing
Alphabet	
Total techs requirements: 1
Total bulbs required: 79	
* Diplomat
* Library
* Literacy (with Code of Laws)
Category:Catalogues