Game engine supporting many 3D/2D formats and graphic effects
8-bit Graphical API for Java
Asphyre is a cross-platform framework for Delphi and FreePascal.
3D .NET engine for Windows, Linux, Mac
A generic 2D engine for any kind of game
C++ game libraries plus server.
Pear3DEngine is a modern and modular 3D development framework
DiaT is a Textadventure
Multi-Language Wrapper Collection for the Irrlicht Engine
Read and write PGN format and test moves for legality.