Nurikabe, a great game.
DRINKS is a set of smart web-based widgets.
OSGET is the first open source mobile game engine template.
Cross-platform 2D game engine
A highly modifiable particle-simulation sandbox game
Statistics for Bauernschnapsen
Space Exploration Game
Make games with Lego-like building blocks
Modified Pokemon games for emulators or devices.
Java based Open source Voxel Engine for RTS games
To log/share/analyze/optimize/simulate garden activity