Rhythm and music games are only as good as the tunes that fill out their soundtracks, and in Audiosurf, the soundtrack is totally unlimited. By pulling music from your personal MP3 library and literally crafting audio levels that you're able to, well, "surf," the indie game can be anything you want it to be. You can pick your favorite rap track and enjoy the zig-zagging patterns that adapt to the beat of the songs, select some classic rock and enjoy the smooth ride, or start up some dubstep and hold on for dear life when the bass drops. Or you can just pick a podcast, and entertain yourself with a game that actually moves to the laughter, yelling, and ramblings of your favorite shows.
This, alone, is a technical achievement worth noting, but where it truly thrives is in the different modes, all of which provide whimsical experiences of their own, and leaderboards that rank your scores against anyone else to ever surf Styx's "Come Sail Away." It's a downright mesmerizing experience, and one that you'll continue to go back to every time your favorite artist drops a new album.