Definitely worth trying. Definitely worth the [small] price too, but it really is affecting my life now. I've been seeing blocks come at me since I woke up this morning.
Also, if you don't have it, you'll need Steam (<--clickable) to play it. It's free and it won't do anything to your computer. It's how we compare scores and play with each other.
Speaking of comparing scores, I forgot to mention that if you're number one at a song and someone beats your score, Audiosurf will send you an e-mail telling you what happened so you can go get your top spot back. There's no spam, just a nice little feature to up the competition.
People, you WILL like this game. A lot of people are playing it now.
God Blessa!