[drummersbrother]

You may be interested in the game Screeps. From their website (name +.com): "It's an open-source game for programmers, wherein the core mechanic is programming your units' AI. You control your colony by writing JavaScript. "

[joycian]

I looked this up and it seems very cool. Do you (or anybody else) know any more of these games or environments that can be controlled by code?