AsteroidsQC is a fully playable, raster version of the classic 1979 Asteroids game
http://osx.garycmartin.com/AsteroidsQC V0.9
AsteroidsQC is intended as a developer example, primarily using Quartz Composer as a game prototyping tool, and using Blender for the 3D sprites. AsteroidsQC requires you have Mac OS X Tiger 10.4.x or above installed. If you also want to play around with the source .qtz file you'll need Quartz Composer installed (available as part of Apple's free developer tools). The file is a fully playable, raster version of the classic 1979 Asteroids game from Atari. I've tried to keep to the original game-play, so watch out for the small saucers - they can be crafty little blighters ;-) Quartz Composer doesn't have any sound playback ability so this is currently a mute example. I plan to add sound (and some other player friendly features) to the currently very basic Cocoa app bundle version available below. Have fun, let me know what you think. Hopefully I'll get some time together to do some more fun experiments like this.
http://osx.garycmartin.com/