In Civilization V and its expansions, a project can be undertaken in a city to provide some sort of benefit.
There are two types of projects in the game: National Projects and International Projects. National Projects must be undertaken separately by each civilization and provide their benefits only to those who complete them. International Projects, which are introduced in Brave New World, may be undertaken by multiple civs at once and provide benefits to the three biggest contributors.
National Projects[]
| Project | Requires | Effect |
|---|---|---|
 Apollo Program
|
 Rocketry
|
Allows Spaceship parts to be built |
 Manhattan Project
|
 Atomic Theory
|
Allows Atomic Bombs and Nuclear Missiles to be built |
 SS Booster
|
 Advanced Ballistics
|
Spaceship requires 3 |
 SS Cockpit
|
 Satellites
|
Spaceship requires 1 |
 SS Engine
|
 Particle Physics
|
Spaceship requires 1 |
 SS Stasis Chamber
|
 Nanotechnology
|
Spaceship requires 1 |
 Utopia Project
|
5 completed Social Policy trees | Triggers cultural victory (in vanilla and Gods & Kings only) |
International Projects[]
| Project | Requires | Effect |
|---|---|---|
| International Games | Resolution passed in World Congress
720 |
 Hosted Games:  Tourism increases by 100% for 20 Turns; Free Social Policy
|
| International Space Station | Resolution passed in World Congress
850 |
Mission Control: International Space Station wonder appears in  Capital
|
| World's Fair | Resolution passed in World Congress
350 |
Hosted Fair:  Culture increases by 100% for 20 Turns
|
Gallery[]
.png "International Games completion art (Civ5).png (1.05 MB)")
_completion_art_(Civ5).png "International Space Station (project) completion art (Civ5).png (784 KB)")
.png "World's Fair completion art (Civ5).png (835 KB)")