Widelands is a free, open source real-time strategy game
Open source clone of the Age of Empires II engine
RTS game with the theme of Strategy by Design
Seven Kingdoms: Ancient Adversaries
Cross-platform, GPL reimplementation of the classic : Syndicate
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Open source FPS/RTS Game
An enhanced version of 7K:AA (Seven Kingdoms: Ancient Adversaries).
Cross-platform real-time strategy game (3D)
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
WeComeInPeace is a simple RTS game that aims towards multiplayer
God game: wage war from the stone age to the future
Fast and robust map analyser for Brood War.
Modification for Age of Empires III
Remake of the classic Caesar III game
An online multiplayer tactical warfare game for fast action combat!
Classic Dune. Modern Controls.
A simple turn-based artillery game and also a real-time strategy game.
A powerful chess engine written in C++