Real Time Strategy game engine supporting early Westwood classics
Endless Sky is a sandbox-style space exploration game
Widelands is a free, open source real-time strategy game
Open source clone of the Age of Empires II engine
Real-time Strategy
RTS game with the theme of Strategy by Design
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Seven Kingdoms: Ancient Adversaries
Cross-platform, GPL reimplementation of the classic : Syndicate
Europa Universalis 4 save game editor
Command and Conquer: Red Alert original source code
Open source FPS/RTS Game
Arianne is an engine to develop multiplayer online games like Stendhal
An enhanced version of 7K:AA (Seven Kingdoms: Ancient Adversaries).
The Star Trek Total Conversion for Homeworld Remastered
Mech Station Beta - Tower Defense like Game
Cross-platform real-time strategy game (3D)
Online War system for IL-2 Sturmovik and Iron Front in ArmA 2
RTSish Game Engine
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Utilities to make running a MegaMek server easier