RetroArch is a frontend for emulators, game engines and media players.
Game engine supporting many 3D/2D formats and graphic effects
A promising chess program
Builds of "FUSE" emulator with my own mods
3D-Accelerated open-source DOOM engine
A cross-platform interpreter for many point-and-click adventure games
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
Paintown is a 2d fighting game engine.
Portable Pokémon Mini Emulator
Sudoku solver based on the initial work of Michael Kennett