Real Time Strategy game engine supporting early Westwood classics
Gideros Release version
Arianne is an engine to develop multiplayer online games like Stendhal
Orx: Data-Driven Game Engine
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Asphyre is a cross-platform framework for Delphi and FreePascal.
3D .NET engine for Windows, Linux, Mac
A game engine written in the D programming language
Free strategy browsergame engine.
A mobile tower 3D tower defense/defend the flag game
A game engine in java for 2D strategy games
Read and write PGN format and test moves for legality.
A small Game Engine project.