Browse free open source Real Time Strategy games and projects for Windows below. Use the toggles on the left to filter open source Real Time Strategy games by OS, license, language, programming language, and project status.
RTS game with the theme of Strategy by Design
The forever free, ad-free and open source chess server
Arianne is an engine to develop multiplayer online games like Stendhal
Seven Kingdoms: Ancient Adversaries
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Endless Sky is a sandbox-style space exploration game
A simple turn-based artillery game and also a real-time strategy game.
Real Time Strategy game engine supporting early Westwood classics
Widelands is a free, open source real-time strategy game
Remake of the classic Caesar III game
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Classic Dune. Modern Controls.
Cross-platform, GPL reimplementation of the classic : Syndicate
Command and Conquer: Red Alert original source code
Europa Universalis 4 save game editor
Repairs unviewable 'Warcraft 3 Replays'
God game: wage war from the stone age to the future