JTronic is a game designed for programming competitions. Players program a Java agent that participates in a game that combines the classic Tron and PacMan games. Features include an AWT GUI, record/playback functionality, and tournament mode.
Pellet Quest is essentially a PacMan adventure game. As you collect pellets, your character increases in power and can explore more and more of the massive world. Idea from www.squidi.net!
DracMan is a game based on the old and fun game of PacMan with a Dracula-theme. Plays in any Java-enabled browser and is quite fun! The game is in Swedish, but that should not stop non-English speaking people from playing since it's not that much text.
JVirus is a plattform independent virus written in Java! "Write once, destroy anywhere". In the serious, JVirus is a game like Pacman, the user controls a virus and must destroy all data in the system and escape from antivirus opponents. It's only a game.