OpenTTD (http://www.openttd.org/en/ http://www.openttd.org/en/) is a Transport Tycoon clone that allows you to write an AI player for the game. The AI player is

OpenTTD (http://www.openttd.org/en/ http://www.openttd.org/en/) is a Transport Tycoon clone that allows you to write an AI player for the game. The AI player is written in Squirrel.