Title: FreeCol
Developers: Michael Burschik, Sergio Cambra, Ryan Richard Faith, Stian Grenborgen, Helgi Hrafn Gunnarsson, Andreas Bartels, Yves Jacoby, Alcides Carlos de Moraes Neto, Christopher Oezbek, Michael Pope, Pedro Rodrigues, Olivier Schmitt, Julien Viala, and many others.
Version: 0.10.3
Development Status: Late Beta.
Requirements: Windows, Mac, or Linux
Rating: 10/10
Site: http://www.freecol.org/Description: A turn-based strategy game based on the classic game Colonization, which in turn is very similar to Civilization. The goal is to advance from a small colony to an independent nation.
Features: Single player, multi-player, AI, scenarios, campaigns.