Beneath A Binary Sky is an engine that simulates a world in which robots controlled by programs can live, work, fight, and even bear new children. The long-term goal of the project is to create a fully configurable engine that can simulates any kind of world, from simple to complex ones with many rules and events.
Froggix is a clone of the classic '80s arcade game Frogger. The aim of the game is to help four frogs to cross a busy road and a treacherous river to get to their homes. Extra points are awarded for catching flies and completing each level quickly. The game features funky electro-music, great sound effects, and a highscore table.
Zombie Nation MUD (ZNMud) is a Multi-User Dungeon engine. It is based on the Teensey engine for its lower level socket handling. It was designed to play out zombie outbreak ideas but can easily be expanded to host other concepts. It's a massive multi-player text-based game (although it does support MXP). It also supports modern day weapons, etc.