Audiosurf
 

Boy, this is a cool one. For those who haven't heard, Audiosurf basically takes a song you select, any from your library, and makes a kind of "track", where you have to collect colored blocks while avoiding gray ones. The images are freakin' beautiful, but simple. For anyone who wants a Guitar-Hero esque game without the pretentiousness, this is for ya.

If you think Audiosurf isn't pretensious, then I have a bridge I'd like to sell you.

How exactly would it be pretentious?

Yeah, why exactly is it pretentious? I don't think it was created to just attract attention or impress others. (Thanks, dictionary.com)

This thread is pretentious.

Audiosurf really sucks

I like listening to music I like and zoning out as I play a game that moves at the pace of the songs and flashes pretty lights at me.

How pretentious.

It's not a very good game, since the notes don't seem to move with the rhythm (it's just a twitch game, really), but it's a fun time waster.