Real Time Strategy game engine supporting early Westwood classics
Open source clone of the Age of Empires II engine
RTSish Game Engine
Europa Universalis 4 save game editor
Arianne is an engine to develop multiplayer online games like Stendhal
0 A.D. is a free, open-source, cross-platform real-time strategy game.
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Mech Station Beta - Tower Defense like Game
Open source FPS/RTS Game
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Fly around an island casting spells, summon monsters, collect mana, a
A space race game in the style of A Dark Room
A snarky 2D management game about building and running a dungeon.
starcraft clone game
Free strategy browsergame engine.
Classic Dune. Modern Controls.
Open Source WW2 Multiplayer RTS
A free engine for C&C Tiberian Dawn
Cross platform 2D game creation framework with Python bindings