A very efficient tutor.
GemRB is a portable open-source implementation of the Infinity Engine
Orx: Portable Game Engine
A cross platform Lua based game engine
Character animation system for games and simulations.
Android, DOS, FirefoxOS, Linux, MacOS and Windows all in one..
Kids Games in Flash
Android/Flash educational children's games
Anathema has moved to http://anathema.github.com