Real Time Strategy game engine supporting early Westwood classics
Game engine supporting many 3D/2D formats and graphic effects
Old-school 2D game engine
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Opensource Game Studio
An online multiplayer turn based strategy game and board game engine.
Built to be ease of use, with no programming knowledge, Multi-platform
A 3D, fully concurrent game engine
3D game engine for C and C++
Free MMORPG Engine. Develop and host graphical browser-based games.
Gomoku Game: Playing with Computer