|
Agriculture |
20 |
Farm Improvements |
Ancient |
|
Pottery, Animal Husbandry, Archery, Mining |
|
Pottery |
35 |
Granary |
Ancient |
Agriculture |
Sailing, Calendar, Writing |
|
Animal Husbandry |
35 |
Reveals Horses, Pasture Improvements |
Ancient |
Agriculture |
Trapping, The Wheel |
|
Archery |
35 |
Archer, Temple of Artemis |
Ancient |
Agriculture |
Mathematics |
|
Mining |
35 |
Mine Improvements, Forest Chopping |
Ancient |
Agriculture |
Masonry, Bronze Working |
|
Sailing |
55 |
Work Boat, Trireme, The Great Lighthouse, Fishing Boat Improvements |
Ancient |
Pottery |
Optics |
|
Calendar |
70 |
Stonehenge, Stone Works, Plantation Improvements |
Ancient |
Pottery |
Theology |
|
Writing |
55 |
Library, The Great Library, Open Border Agreements |
Ancient |
Pottery |
Philosophy |
|
Trapping |
55 |
Circus, Trading Post Improvements, Camp Improvements |
Ancient |
Animal Husbandry |
Civil Service |
|
The Wheel |
55 |
Chariot Archer, Water Mill, Road Improvements |
Ancient |
Animal Husbandry |
Horseback Riding, Mathematics |
|
Masonry |
55 |
Walls, The Pyramids, Mausoleum of Halicarnassus, Quarry Improvements, Removing Marshes |
Ancient |
Mining |
Construction |
|
Bronze Working |
55 |
Spearman, Barracks, The Colossus, Statue of Zeus, Chopping Jungles |
Ancient |
Mining |
Iron Working |
|
Optics |
85 |
Lighthouse, Unit Embarkation |
Classical |
Sailing |
Compass |
|
Philosophy |
105 |
Temple, National College, National Epic, The Oracle, Research Agreements |
Classical |
Writing |
Theology, Civil Service |
|
Horseback Riding |
105 |
Horseman, Stable |
Classical |
The Wheel |
Chivalry |
|
Mathematics |
105 |
Catapult, Courthouse, The Hanging Gardens |
Classical |
The Wheel, Archery |
Currency, Engineering |
|
Construction |
105 |
Colosseum, Circus Maximus, The Great Wall, Lumber Mill Improvements, |
Classical |
Masonry |
Engineering |
|
Iron Working |
160 |
Swordsman, Heroic Epic, Reveals Iron |
Classical |
Bronze Working |
Metal Casting |
|
Theology |
275 |
Monastery, Garden, Angkor Wat, The Hagia Sophia |
Medieval |
Calendar, Philosophy |
Education |
|
Civil Service |
440 |
Pikeman, Chichen Itza, +1  from Fresh Water Farms |
Medieval |
Philosophy, Trapping |
Education, Chivalry |
|
Currency |
275 |
Mint, Market, National Treasury, Machu Picchu, Wealth Conversion |
Medieval |
Mathematics |
Chivalry |
|
Engineering |
275 |
Aqueduct, Fort Improvements, Bridges over Water |
Medieval |
Mathematics, Construction |
Machinery, Physics |
|
Metal Casting |
275 |
Forge, Workshop |
Medieval |
Iron Working |
Physics, Steel |
|
Compass |
375 |
Harbor, +1  from Fishing Boats |
Medieval |
Optics |
Astronomy |
|
Education |
485 |
University, Oxford University, Notre Dame, The Porcelain Tower, Research Conversion |
Medieval |
Theology, Civil Service |
Astronomy, Acoustics, Banking |
|
Chivalry |
485 |
Knight, Castle, Himeji Castle, Defensive Pact Agreements |
Medieval |
Civil Service, Horseback Riding, Currency |
Acoustics, Banking |
|
Machinery |
485 |
Crossbowman, Armory, Ironworks, Faster Road Movement |
Medieval |
Engineering |
Printing Press |
|
Physics |
485 |
Trebuchet |
Medieval |
Engineering, Metal Casting |
Printing Press, Gunpowder |
|
Steel |
485 |
Longswordsman |
Medieval |
Metal Casting |
Gunpowder |
|
Astronomy |
780 |
Caravel, Observatory, +1  for Embarked Units, Embarked Units may Enter Ocean |
Renaissance |
Compass, Education |
Navigation |
|
Acoustics |
780 |
Opera House, Hermitage, Sistine Chapel, The Kremlin |
Renaissance |
Education, Chivalry |
Scientific Theory |
|
Banking |
780 |
Bank, The Forbidden Palace |
Renaissance |
Education, Chivalry |
Economics |
|
Printing Press |
780 |
Theatre, Taj Mahal |
Renaissance |
Machinery, Physics |
Economics |
|
Gunpowder |
840 |
Musketman |
Renaissance |
Physics, Steel |
Chemistry, Metallurgy |
|
Navigation |
1080 |
Frigate, Seaport |
Renaissance |
Astronomy |
Archaeology, Scientific Theory |
|
Economics |
1080 |
Windmill, Big Ben, +1 from Trading Posts, Camps and Customs Houses |
Renaissance |
Banking, Printing Press |
Scientific Theory, Military Science |
|
Chemistry |
1080 |
Cannon, +1  from Mines, Quarries and Manufactories |
Renaissance |
Gunpowder |
Military Science, Fertilizer |
|
Metallurgy |
1080 |
Lancer |
Renaissance |
Gunpowder |
Rifling |
|
Archaeology |
1560 |
Museum, The Louvre |
Renaissance |
Navigation |
Biology |
|
Scientific Theory |
1560 |
Public School, Reveals Coal, +1 from Lumber Mills, +2  from Academies |
Renaissance |
Economics, Navigation, Acoustics |
Biology, Steam Power |
|
Military Science |
1560 |
Cavalry, Military Academy, Brandenburg Gate |
Renaissance |
Economics, Chemistry |
Steam Power, Dynamite |
|
Fertilizer |
1560 |
+1 from Farms with no Fresh Water, Plantations and Pastures |
Renaissance |
Chemistry |
Dynamite |
|
Rifling |
1710 |
Rifleman, Arsenal |
Renaissance |
Metallurgy |
Dynamite |
|
Biology |
2350 |
Hospital, Reveals Oil, Oil Well Improvements |
Industrial |
Archaeology, Scientific Theory |
Electricity |
|
Steam Power |
2350 |
Ironclad, Factory, +1 for Embarked Units |
Industrial |
Scientific Theory, Military Science |
Electricity, Replaceable Parts, Railroad |
|
Dynamite |
2660 |
Artillery |
Industrial |
Fertilizer, Military Science, Rifling |
Combustion |
|
Electricity |
2660 |
Stock Exchange, Reveals Aluminum |
Industrial |
Biology, Steam Power |
Refrigeration, Telegraph, Radio |
|
Replaceable Parts |
2660 |
Anti-Tank Gun, Infantry, Statue of Liberty |
Industrial |
Steam Power |
Flight, Combustion |
|
Railroad |
2660 |
Railroad Improvements |
Industrial |
Steam Power |
Combustion |
|
Refrigeration |
3100 |
Submarine, Off-Shore Platform Construction |
Industrial |
Electricity |
Plastics, Penicillin |
|
Telegraph |
3100 |
Battleship, Military Base, Cristo Redentor |
Industrial |
Electricity |
Electronics |
|
Radio |
3100 |
Anti-Aircraft Gun, Broadcast Tower, Eiffel Tower |
Industrial |
Electricity |
Mass Media, Radar |
|
Flight |
3100 |
Carrier, Fighter |
Industrial |
Replaceable Parts |
Radar |
|
Combustion |
3100 |
Destroyer, Tank |
Industrial |
Replaceable Parts, Railroad, Dynamite |
Atomic Theory, Lasers |
|
Plastics |
4700 |
Hydro Plant, Research Lab |
Modern |
Refrigeration |
Ecology |
|
Penicillin |
4700 |
Medical Lab |
Modern |
Refrigeration |
Ecology |
|
Electronics |
4700 |
Mechanized Infantry |
Modern |
Telegraph |
Computers |
|
Mass Media |
4700 |
Stadium, Sydney Opera House |
Modern |
Radio |
Computers |
|
Radar |
4700 |
Bomber, Paratrooper, Pentagon |
Modern |
Radio, Flight |
Rocketry, Lasers |
|
Atomic Theory |
4700 |
Reveals Uranium, Manhattan Project |
Modern |
Combustion |
Nuclear Fission |
|
Ecology |
5400 |
Solar Plant |
Modern |
Plastics, Penicillin |
Globalization |
|
Computers |
5400 |
Nuclear Submarine, Mobile SAM |
Modern |
Electronics, Mass Media |
Robotics |
|
Rocketry |
5400 |
Helicopter Gunship, Rocket Artillery, Apollo Program |
Modern |
Radar |
Satellites |
|
Lasers |
5400 |
Jet Fighter, Modern Armor |
Modern |
Radar, Combustion |
Stealth, Advanced Ballistics |
|
Nuclear Fission |
5400 |
Atomic Bomb, Nuclear Plant |
Modern |
Atomic Theory |
Advanced Ballistics |
|
Globalization |
6000 |
United Nations |
Modern |
Ecology |
Particle Physics |
|
Robotics |
6000 |
SS Booster, Missile Cruiser, Spaceship Factory |
Modern |
Computers |
Particle Physics |
|
Satellites |
6000 |
SS Cockpit, Guided Missile, Reveals the Map |
Modern |
Rocketry |
Particle Physics, Nuclear Fusion |
|
Stealth |
6000 |
Stealth Bomber |
Modern |
Lasers |
Nuclear Fusion |
|
Advanced Ballistics |
6000 |
Nuclear Missile |
Modern |
Lasers, Nuclear Fission |
Nuclear Fusion |
|
Particle Physics |
6000 |
SS Engine |
Future |
Globalization, Robotics, Satellites |
Nanotechnology |
|
Nuclear Fusion |
6500 |
Giant Death Robot |
Future |
Satellites, Stealth, Advanced Ballistics |
Future Tech |
|
Nanotechnology |
6000 |
SS Stasis Chamber |
Future |
Particle Physics |
Future Tech |
|
Future Tech |
7000 |
|
Future |
Nanotechnology, Nuclear Fusion |
|
