| Tech requirements |
Description | Allows (Units, Buildings, Techs) / Obsoletes (Units, Buildings) |
|---|---|---|
| Advanced Flight |
Total techs requirements: 55 Total bulbs required: 44,370 |
|
| Alphabet |
Total techs requirements: 0 Total bulbs required: 28 |
|
| Amphibious Warfare |
Total techs requirements: 36 Total bulbs required: 12,889 |
|
| Astronomy |
Total techs requirements: 5 Total bulbs required: 400 |
|
| Atomic Theory |
Total techs requirements: 17 Total bulbs required: 3,633 |
|
| Automobile |
Total techs requirements: 44 Total bulbs required: 28,118
|
|
| Banking |
Total techs requirements: 8 Total bulbs required: 928 |
|
| Bridge Building |
Total techs requirements: 6 Total bulbs required: 552
|
|
| Bronze Working |
Total techs requirements: 0 Total bulbs required: 28 |
|
| Ceremonial Burial |
Total techs requirements: 0 Total bulbs required: 28 |
|
| Chemistry |
Total techs requirements: 14 Total bulbs required: 2,298 |
|
| Chivalry |
Total techs requirements: 7 Total bulbs required: 729 |
|
| Code of Laws |
Total techs requirements: 1 Total bulbs required: 79 |
|
| Combined Arms |
Total techs requirements: 58 Total bulbs required: 56,104 |
|
| Combustion |
Total techs requirements: 39 Total bulbs required: 19,155 |
|
| Communism |
Total techs requirements: 31 Total bulbs required: 10,004
|
|
| Computers |
Total techs requirements: 56 Total bulbs required: 50,380 |
|
| Conscription |
Total techs requirements: 25 Total bulbs required: 6,470 |
|
| Construction |
Total techs requirements: 3 Total bulbs required: 218
|
|
| Currency |
Total techs requirements: 1 Total bulbs required: 79 |
|
| Democracy |
Total techs requirements: 15 Total bulbs required: 2,540
|
|
| Economics |
Total techs requirements: 15 Total bulbs required: 2,405 |
|
| Electricity |
Total techs requirements: 28 Total bulbs required: 7,550
|
|
| Electronics |
Total techs requirements: 38 Total bulbs required: 17,914 |
|
| Engineering |
Total techs requirements: 6 Total bulbs required: 523 |
|
| Environmentalism |
Total techs requirements: 64 Total bulbs required: 79,634 |
|
| Espionage |
Total techs requirements: 33 Total bulbs required: 12,774 |
|
| Explosives |
Total techs requirements: 23 Total bulbs required: 5,180 |
|
| Feudalism |
Total techs requirements: 5 Total bulbs required: 431 |
|
| Flight |
Total techs requirements: 41 Total bulbs required: 22,442
|
|
| ||
| Fusion Power |
Total techs requirements: 53 Total bulbs required: 54,353 |
|
| Genetic Engineering |
Total techs requirements: 35 Total bulbs required: 13,908 |
|
| Guerilla Warfare |
Total techs requirements: 42 Total bulbs required: 20,397 |
|
| Gunpowder |
Total techs requirements: 14 Total bulbs required: 1,980 |
|
| Horseback Riding |
Total techs requirements: 0 Total bulbs required: 28 |
|
| Industrialization |
Total techs requirements: 29 Total bulbs required: 7,883
|
|
| Invention |
Total techs requirements: 11 Total bulbs required: 1,232
|
|
| Iron Working |
Total techs requirements: 2 Total bulbs required: 136 |
|
| Labor Union |
Total techs requirements: 55 Total bulbs required: 45,896 |
|
| Laser |
Total techs requirements: 51 Total bulbs required: 46,307 |
|
| Leadership |
Total techs requirements: 19 Total bulbs required: 3,536 |
|
| Literacy |
Total techs requirements: 3 Total bulbs required: 241 |
|
| Machine Tools |
Total techs requirements: 44 Total bulbs required: 23,516 |
|
| Magnetism |
Total techs requirements: 17 Total bulbs required: 2,711 |
|
| ||
| Map Making |
Total techs requirements: 1 Total bulbs required: 79 |
|
| Masonry |
Total techs requirements: 0 Total bulbs required: 28 |
|
| Mass Production |
Total techs requirements: 45 Total bulbs required: 31,340
|
|
| Mathematics |
Total techs requirements: 2 Total bulbs required: 136 |
|
| Medicine |
Total techs requirements: 10 Total bulbs required: 1,186 |
|
| Metallurgy |
Total techs requirements: 20 Total bulbs required: 3,760 |
|
| ||
| Miniaturization |
Total techs requirements: 48 Total bulbs required: 32,350 |
|
| Mobile Warfare |
Total techs requirements: 52 Total bulbs required: 37,526 |
|
| Monarchy |
Total techs requirements: 3 Total bulbs required: 218
|
|
| Monotheism |
Total techs requirements: 9 Total bulbs required: 1,018 |
|
| Mysticism |
Total techs requirements: 1 Total bulbs required: 79
|
|
| Navigation |
Total techs requirements: 9 Total bulbs required: 954
|
|
| Nuclear Fission |
Total techs requirements: 48 Total bulbs required: 36,171 |
|
| Nuclear Power |
Total techs requirements: 50 Total bulbs required: 42,449
|
|
| Philosophy |
Total techs requirements: 6 Total bulbs required: 546
|
|
| Physics |
Total techs requirements: 13 Total bulbs required: 1,747 |
|
| Plastics |
Total techs requirements: 63 Total bulbs required: 76,083
|
|
| Polytheism |
Total techs requirements: 2 Total bulbs required: 136 |
|
| Pottery |
Total techs requirements: 0 Total bulbs required: 28 |
|
| Radio |
Total techs requirements: 45 Total bulbs required: 29,166
|
|
| Railroad |
Total techs requirements: 25 Total bulbs required: 5,549
|
|
| ||
| Recycling |
Total techs requirements: 47 Total bulbs required: 35,470 |
|
| Refining |
Total techs requirements: 36 Total bulbs required: 14,640 |
|
| Refrigeration |
Total techs requirements: 32 Total bulbs required: 10,856
|
|
| Robotics |
Total techs requirements: 58 Total bulbs required: 58,995 |
|
| Rocketry |
Total techs requirements: 57 Total bulbs required: 51,430 |
|
| Sanitation |
Total techs requirements: 16 Total bulbs required: 2,393 |
|
| Seafaring |
Total techs requirements: 3 Total bulbs required: 218
|
|
| Space Flight |
Total techs requirements: 62 Total bulbs required: 70,843 |
|
| Stealth |
Total techs requirements: 64 Total bulbs required: 74,539 |
|
| Steam Engine |
Total techs requirements: 21 Total bulbs required: 3,813 |
|
| Steel |
Total techs requirements: 36 Total bulbs required: 14,957 |
|
| Superconductors |
Total techs requirements: 52 Total bulbs required: 50,275 |
|
| Tactics |
Total techs requirements: 30 Total bulbs required: 9,808 |
|
| The Corporation |
Total techs requirements: 33 Total bulbs required: 11,243 |
|
| The Republic |
Total techs requirements: 4 Total bulbs required: 387
|
|
| The Wheel |
Total techs requirements: 1 Total bulbs required: 79 |
|
| Theology |
Total techs requirements: 13 Total bulbs required: 1,922
|
|
| ||
| Theory of Gravity |
Total techs requirements: 11 Total bulbs required: 1,671 |
|
| Trade |
Total techs requirements: 4 Total bulbs required: 304 |
|
| University |
Total techs requirements: 9 Total bulbs required: 1,018 |
|
| Warrior Code |
Total techs requirements: 0 Total bulbs required: 28 |
|
| Writing |
Total techs requirements: 1 Total bulbs required: 79 |
|
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