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
Seven Kingdoms: Ancient Adversaries
Real Time Strategy game engine supporting early Westwood classics
0 A.D. is a free, open-source, cross-platform real-time strategy game.
A simple turn-based artillery game and also a real-time strategy game.
Arianne is an engine to develop multiplayer online games like Stendhal
Endless Sky is a sandbox-style space exploration game
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Cross-platform, GPL reimplementation of the classic : Syndicate
Remake of the classic Caesar III game
Classic Dune. Modern Controls.
Europa Universalis 4 save game editor
Widelands is a free, open source real-time strategy game
A free engine for C&C Tiberian Dawn
Command and Conquer: Red Alert original source code
Open source revival of the game Transarctica / Arctic Baron