So far I liked the game, but I've encountered a little problem. It's little, but annoying. When you turn off the music in the pause menu, whether you play other music or not, after one or two levels it turns back on. You have to switch the music on and off if you want to stop it again, which is pretty annoying if you're playing music from your device from the pause menu in game, because that stops if you turn the other music on, and you have to turn that on again.
If I need to do this just once, that's fine by me, but every one or two levels is a bit too much for me.
So 4/5 for me. Fix the music and it's 5.