PS3 XHEN-MOD+ v1.4.1
2D Game Engine
A cross-platform interpreter for many point-and-click adventure games
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
Multi-platform game engine similar to old Megaman with a stage editor
Paintown is a 2d fighting game engine.
Portable Pokémon Mini Emulator
Small OpenGL based game enegine