Robocode is a fun programming game that teaches Java by letting you create Java "Robots," real Java objects that battle it out onscreen against other robots. Robocode, with its snazzy graphics and hyper battles, is similar to a combination of Logo and CoreWars. While playing Robocode, you will learn how to write Java code, how to handle events, how to create inner classes, and more.

License: free

Additional System Requirements: Java 2 (>=1.3)