A growing collection of computer games that are freeware, open source or free to play.

C-evo is a freeware empire building game for Windows.
With a time scope of several thousand years, it covers aspects of exploration and expansion, industry and agriculture, warfare and diplomacy, science and administration. C-evo follows the spirit of popular turn-based strategy games from the mid 90s, but with more emphasis on powerful AI and careful design of the rules, resulting in a true challenge.