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Welcome to Apolyton CS: CTP's City Improvements Reference Sheet! The table below is a listing of each of the improvements made available to you throughout the evolutionary course of CTP.
(Information Courtesy BradyGames)
| Name | Cost | Effect | Maint. Cost | Restrictions |
| Academy | 540 | +50% Science, +1/2 Science per Citizen | 4 | Land Only |
| Airport | 2,500 | +50% Gold, +100% Pollution | 20 | Land Only |
| Aqua-Filter | 8,000 | -5 Overcrowding | 5 | |
| Aqueduct | 405 | +20% Food, -2 Overcrowding | 3 | Land Only |
| Arcologies | 5,000 | -4 Overcrowding | 15 | |
| Bank | 1,125 | +50% Gold, Allows Merchants | 10 | |
| Beef Vat | 3,000 | Prevents Starvation | 3 | |
| Bio Memory Chip | 2,800 | +50% Science, +1 Science per Citizen | 5 | |
| Body Exchange | 10,000 | +3 Happiness | 50 | |
| Capitol | 405 | Capitol | 0 | |
| Cathedral | 2,475 | +3 Happiness (+1 Under Communism, +5 Under Theocracy) | 10 | |
| City Clock | 1,620 | +1 Gold per Citizen | 5 | Land Only |
| City Wall | 405 | +4 Defense, Prevents Slavery, Prevents Conversions 50% of the Time | 3 | Land Only |
| Coliseum | 1,035 | +2 Happiness | 8 | Land Only |
| Computer Center | 2,400 | +50% Science, +1/2 Science per Citizen | 24 | |
| Courthouse | 270 | -50% Crime | 2 | Land Only |
| Drug Store | 3,000 | +3 Happiness, +25% Production | 10 | |
| Eco-Transit | 3,500 | -200% Pollution | 15 | |
| Factory | 2,025 | +50% Production, Allows Laborers, +100% Pollution | 20 | |
| Forcefield | 6,000 | +12 Defense | 30 | |
| Fusion Plant | 10,000 | +50% Production, -100% Pollution | 30 | |
| Granary | 540 | 50% Less Food Required to Grow | 1 | Land Only |
| Hospital | 2,250 | -3 Overcrowding | 10 | |
| House of Freezing | 5,000 | +50% Gold, +5 Happiness Under Theocracy | 25 | |
| Incubation Center | 2,500 | +25% Production | 25 | |
| Marketplace | 675 | +50% Gold, Allows Merchants | 5 | Land Only |
| Micro Defense | 3,500 | Prevents Infect City and Nano Attacks | 15 | |
| Mill | 1,125 | +50% Production | 10 | Land Only |
| Mind Controller | 10,000 | No Unhappiness, Prevents Slavery, Prevents Conversion 50% of the Time | 50 | |
| Movie Palace | 1,500 | Lowers War Discontent 50% | 10 | |
| Nanite Factory | 4,000 | Gold = Production for Rush Buy | 30 | Space Only |
| Nuclear Plant | 5,500 | +50% Production, -50% Pollution | 45 | |
| Oil Refinery | 3,500 | +50% Production, +200% Pollution | 20 | Land and Sea Only |
| Publishing House | 540 | +25% Science, +1/2 Science per Citizen | 6 | Land Only |
| Rail Launcher | 6,000 | Launches Units into Space | 15 | Land and Sea Only |
| Recycling Plant | 3,000 | -200% City Pollution, Lowers Worldwide Pollution | 5 | |
| Robotic Plant | 4,500 | +50% Production, +100% Pollution | 45 | |
| SDI | 5,000 | Prevents Nuke Attack on City | 10 | Land and Sea Only |
| Security Monitor | 4,000 | +25% Production, -50% Crime -100% Pollution | 10 | |
| Television | 3,000 | +5 Gold Per Citizen | 50 | |
| Temple | 270 | +2 Happiness | 2 | Land Only |
| Theater | 495 | Doubles Effect of Entertainers, +1 Happiness | 1 | Land Only |
| University | 1,350 | +50% Science | 12 |