JGame is a 2D game engine that makes multi-platform development easier. It runs on the Java JRE 1.3+ platform with optional OpenGL (JOGL) enhancements, the J2ME (MIDP2.0/CLDC1.1) mobile platform, and the Android (2.1+) platform. JGame features sprites with automatic animation and collision detection, a tile-based background with easy sprite-tile interaction facilities, automatic scaling, sound, game state, persistent storage, and game options. The engine provides an enhanced graphics API with a fallback to simpler and more efficient graphics on J2ME and plain JRE. A patched version of the JBox2D physics engine that runs on all platforms is included.
pydance is a dancing game written in Python, formerly named pyDDR. The idea is simple. There's a floor mat with arrows, and the game scrolls arrows up the screen to the beat while playing a song. When the arrows reach the top of the screen (not sooner and not later), the player hits the corresponding arrow on the pad, and given that it's hit on time with the beat, points are scored. Based on how well the dance is put together, s/he is graded at the end of the song. Both keyboard and mat play are supported.
Trackballs is a simple game similar to the classic game Marble Madness. By steering a marble through a track filled with vicious hammers, pools of acid, and other obstacles the player collects points. When the ball reaches the destination, the player continue to the next, more difficult track - unless, of course, time runs out first.
In Armagetron, you ride a lightcycle around the game grid. You can only make sharp turns of 90 degrees and a wall constantly builds up after you. Make your enemies crash into your wall, but be aware that they are trying to do the same to you. If you are fast enough, you may be able to trap them, but the only way to speed up your lightcycle is to drive close to the dangerous walls. Prepare for exciting strategic preparations followed by action-packed close combat!
Heroes is similar to the "Tron" and "Nibbles" games of yore, but includes many graphical improvements and new game features including 12 original soundtracks, 94 levels (in 10 different tilesets), and five gaming modes including Quest (the classical Nibbles), or Kill'em all (squish the lemmings).