was on steam on sale last weekend, insane fun. having trouble with xfire video upload here are two of my youtube links

http://www.youtube.com/watch?v=MhCCt_ure7Q - audiosurf-mark-vii-brown-vs-gray

http://www.youtube.com/watch?v=Zs5_JCbDVoI - audiosurf-jonny-frizz-newgrounds-on-speed