JGame is a small multiplatform 2D game engine. It runs on the Java JRE 1.3+ platform, the J2ME (MIDP2.0/CLDC1.1) mobile platform, and the Android (2.1+) platform. It provides a very high-level framework for "classic" type arcade games.
OpenGH is a open source attempt to create a game akin to the hugely popular "Guitar Hero" game on the PC. OpenGH will attempt, in any way possible, to bring the Guiter Hero experience to the PC.