You can place a variety of jumps and obstacles (called props) in a large arena, and then drive around the arena in one of 8 vehicles, attempting crazy stunts.
While driving you can also record "instant replays" up to 15 seconds in length, and then playback your stunt from any angle. you can even save/load these replays,
- Workaround for a few GL driver bugs on older machines, in particular first-gen iMacs and old PPC machines
- Workaround for GLSL vertex attribute aliasing problems