All of Minecraft, EASILY get Minecraft resources
Ct.js is a desktop game engine that makes learning programming fun
A fresh & lightweight javascript game engine
Massively multiplayer online game server and client framework
A puzzle game of rules acting upon rules. Create the desired pattern.
Original turn-based strategy wargame & boardgame
Classic backgammon in fantasy setting with a lot of missions.
An extensible development framework for roleplay games.