What is Game Editor?
Game Editor is the open source game design software that gives you the power to create the games of your dreams, and, unlike other game creation tools, gives you the chance to get and change the source code of the game creator and design and develop 2D games for iPhone, iPad, Mac OS X, Windows, Linux, Pocket PC, Windows Mobile, Windows Mobile-based Smartphones and GP2X.
No updates since Jan 2013 : https://sourceforge.net/projects/game-editor/
Game Editor Screenshots
Game Editor Features
Game Editor information