Civilization Wiki
Wikipedia has a page called:

In the Civilization games, a project is a special task that can be undertaken in a city to provide either a temporary or permanent benefit. Like units, buildings, and wonders, projects require a certain amount of production to complete, but some projects can be undertaken by multiple civilizations.

Civilization IV

Civilization V

Civilization VI

Sid Meier's Alpha Centauri‎

Other games

Project is not present in (or the article has not been created for) the following games :

Game Article
Civilization VII Project (Civ7)
Civilization: Beyond Earth Project (CivBE)
Civilization Revolution Project (CivRev)
Civilization Revolution 2 Project (CivRev2)
CivWorld Project (CivWorld)
Freeciv Project (Freeciv)
Civilization: Call to Power Project (CTP1)
Call to Power II Project (CTP2)
C-evo Project (C-evo)
Sid Meier's Colonization Project (Col)
FreeCol Project (FreeCol)
Civilization IV: Colonization Project (Civ4Col)
Starships Project (Starships)

Not in the following games

It has been confirmed that Project is not present in the following games :

Civilization II
Civilization III

Future technology (CivRev)
This is a disambiguation page used to differentiate articles on different topics of the same name. If an internal link led you to this page, you may want to go back and edit it so that it points to the desired specific page.