Real-time strategy programming game
Grobots is a real-time strategy programming game, in which programs (in a dialect of Forth) control teams of robots as they forage, reproduce and fight. It runs on Mac OS X, Windows, and (without graphics) Linux.
This is a very neat project. I spend maybe a couple hours a week tinkering with my bots and examining others. It has good promise for extensibility and porting, and I for one will be watching it for the foreseeable future.
Best programming game I've played.