Grobots
- A game in which teams of robots eat, fight, and reproduce under the control of programs written by the players (in a simple dialect of Forth). GPL; runs on Mac and Windows.
- http://grobots.sourceforge.net/

RoboWars
- Requires players to build a robot using C or C++ and then compete against other robots.
- http://www.deepnettech.com/robowars.html

BotWarz
- A project based on Bot Arena.
- http://student.uq.edu.au/~s348521/plasma/botwarz/

JBotRace
- A car racing simulator in which the cars are driven by robots. The robots are small programs written in Java and it is the player's task to program the fastest robot.
- http://jbotrace.sourceforge.net

Robot War Competition
- Prizes and information regarding the competition at the IIT chapter of the Association for Computing Machinery.
- http://www.iit.edu/~acm/robotwar/

Research Projects: Mission Lab
- MissionLab takes high-level military-style plans and executes them with teams of real or simulated robotic vehicles.
- http://www.cc.gatech.edu/ai/robot-lab/research/MissionLab/

BeBits: RobotWar
- Features information, screenshots, and download for BeOS.
- http://www.bebits.com/app/1792/

Robot Race
- A free Robo Rally clone.
- http://rr6.sourceforge.net/

RoboCom
- Build virtual robots and try to wipe out the other robots using all means possible.
- http://www.cyty.com/robocom/