Audiosurf: Ride Your Music
A game where it puts you in a race-track like setting, and you have to collect colored cubes a certain way to obtain points. The track and cubes change depending on the song you pick. You'd have to play to fully understand.
I urge you to at least check out the demo and possibly purchase it. It's very addicting and great fun.
I could almost compare it to guitar hero without only following the sound of the guitar.
Discuss.