Very good.
I liked it a lot. The idea is pretty cool, it's simple and easy to get used to it, that's what I like... simple and addictive. It kept me playing for a while and just good game concepts get to keep people playing and wanting to play more. Now, things that could be better: Graphics, they seemed ok, but at some points it looked like they were done just to finish the game faster... they're not bad, but could be better. Music is cool and I like the variety you chose, though it got very repeatitive at some points and some of them didn't really suit the game. Just those two things, everything else is great! Very good job, I like playing games like yours!