Cross-platform C framework very compact libraries and tools.
A generic 2D engine for any kind of game
C++ Framework for slot machine games
Hungry Hero is an open source Flash game built on Starling Framework.
A cross-platform OpenGL based lightweight scenegraph library
AMOS BASIC reimplementation in Java
Cross-platform 2D game engine
A cross platform 3d c++ game engine
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Read and write PGN format and test moves for legality.
The next generation mud is an open-source extensible, programmable mud
A generic C++ MUD server featuring a strategy-style hexagon map
An extensible game engine that targets RPGs.
A small Game Engine project.