A development environment focused on modding
Arianne is an engine to develop multiplayer online games like Stendhal
Game engine supporting many 3D/2D formats and graphic effects
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Example code for creating a 2D platform game in Java.
Cross platform Game Creation Software
Gives agents personality, moods, emotions and emotional attachments.
Read and write PGN format and test moves for legality.