Bleh, Soundodger lost its appeal quicker than anything I've played in quite some time.
That's not to say it's BAD, it's just extremely limited and there's no scoring system or anything (for the most part) so the entire scope of the game is really just "beat every stage without getting hit." And that's all there is to it. It's probably worth the asking price for the soundtrack though, the visuals combined with the one classical style piece in the game gave me a wonderful feeling.
I was also disappointed. I bought the game after watching a video thinking it seemed incredible. The first two stages were euphoric, and then everything after is kind of meh.
On top of that, it doesn't help that the auto-generated content for your own songs is lousy. Basically it just involves each point shooting random bullets--not even the bullet patterns from the normal game are present. And I can't select any difficulty or anything. In addition, I find it super annoying how every time you get hit, the music warps in a slowdown/fastforward effect. It's fine in easier modes, but in the tougher ones, you're basically never even hearing the song. I asked about adding an option to disable this on the Steam forum, and the developer didn't seem keen on it. Well, I'm not keen on not being able to listen to the music in a music game.
There's a lot of other issues with the game. The biggest one is that it plays in 30fps with choppy mouse movement. A bullet hell music game can't be released like this, it's almost unplayable to me (the developer is looking into it but says there are sound desync issues in 60 fps).
And second after that, another HUGE issue for me, is that because of the FPS and the fact that enemies only have a hit point on the tip (and not their whole body), you can just swipe the mouse across the screen even if there's 100 bullets there and not die. The developer says he has no problem with people "cheating" this way and that people can choose whether to do it or not. That's just ridiculous, imo, and just hints at either lousy design or an inability on his part to code the game properly.
All in all, one of my biggest regrets on Steam so far (that I have played, anyway).