Fantasysci5: Been thinking about getting Audiosurf. I like the idea of a Guitar-hero kind of game, except with beat. My music collection is all things I downloaded from Youtube, however, and turned into MP3s, so not sure if the game will recognize the artist, etc. Hopefully it'll take any MP3. I looked at Beat Hazard, which seems the same except for in space, but I like the guitar-hero theme.
Do you guys like it?
if you want something like guitar hero -
Rhythm Zone. However it's not on a discount now and if it gets discounted someday as a regular daily deal or something, be sure to check the forums first, I know it used to be quite buggy.
In addition to beat hazard, there's also
The polynomial. Haven't tried it.
As for audiosurf, for that price, it's a steal. I used to be insanely addicted to it, but to my surprise some of my friends didn't like it as much (non-gamer friends though, the kind that plays maybe 2 games per year). There's the super fun mono mode which is all about reflexes, getting colored blocks, and avoiding grey blocks. And there are various other modes which are more puzzle-like and require some strategic thinking. If you get it, play it with faster/more dynamic songs definitely, and make a quick transition to the medium difficulty, much better as training imo. But there are some slower songs which look just gorgeous in the mono mode, the whole track ends up looking literally like a rainbow. The tag has nothing to do with how the track is generated, so you can play songs without tags too. Getting a nice place on the board rocks, but frankly you can avoid it completely, there's a lot of fun in just trying to beat your own score.
p.s. *fangirl mode* since you mentioned gh, have you ever played ddr? :) if you like rhythmic games even a tiny bit and haven't, you must! the world's most fun way to keep your butt firm and keep in shape in general ;)