Programming Games

Embassy
A client-server game in which all mechanical objects(robots) can be programmed, using standard programming languages, to build an empire and battle other empires.
http://embassy.sourceforge.net/

Marionette Handler
Offers information about a Mech programming game for the Sega Dreamcast.
http://www.cheatcc.com/dc/sg/marionette_handler.txt

SourceForge: Arena
An experimental virtual world which integrates elements from user-interactive worlds, non-interactive evolutionary worlds, autonomous intelligent agents, and program competition games.
http://sourceforge.net/projects/arena/

Starship Soccer
Write the AI for a team of starships and let them do battle against teams written by others.
http://www.geocities.com/SiliconValley/Horizon/8596/ssoccer.html

The Tao of Soccer
A multi-player real-time soccer simulation game. In this game, human-controlled soccer players compete or cooperate with AI-controlled soccer players. The game is implemented in Java using client-server architecture.
http://www.cs.ubc.ca/spider/yzhang/soccer/soccer.html

V-Soccer
A soccer simulation that is based on the rules of the Robo-Cup simulation league.
http://vsoc.sourceforge.net/

Winbots
A simulated battleground where programs (bots) written by users compete in a do or die battle. Includes maps, screenshots, downloads, and rules.
http://senthilkumar.sourceforge.net/