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.
P2E play-to-win game developed by RET Token
Online War system for IL-2 Sturmovik and Iron Front in ArmA 2
Real-time Strategy
The Star Trek Total Conversion for Homeworld Remastered
RTS game with the theme of Strategy by Design
Cross-platform, GPL reimplementation of the classic : Syndicate
Arianne is an engine to develop multiplayer online games like Stendhal
Seven Kingdoms: Ancient Adversaries
Endless Sky is a sandbox-style space exploration game
Europa Universalis 4 save game editor
Cross-platform real-time strategy game (3D)
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Open source FPS/RTS Game
Real Time Strategy game engine supporting early Westwood classics
The forever free, ad-free and open source chess server
A simple gui game that plays the game bagels with users.
Lines a game written in Python two players through internet
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Open source revival of the game Transarctica / Arctic Baron
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.