meh.
Not too good. The song was just making me crazy and stuff.
Here's some tips (if you want to make another one):
1. Improve the graphics. (A game made in 2 colors is not that good.)
2. The 'marble glow' is frustrating, remove it.
3. Add powerups :D
4. Add some kind of a music chooser or something. (It's not hard)
Otherwise... It's a kinda entertaining game. I got 6000 points by playing in 2 minutes...
I'll be waiting for the next one!! :D