This game is extremely good! I loved it! The controls worked very well, the puzzles were mind boggling, the music soothing, and the physics and graphics were both top notch. There doesn't seem to be any storyline, but for a game as innovative and amazing as this, there isn't much of a need. The featuring of a level skip function was nice, as a couple of them were very tricky. But that's my only complaint-- and it's not really a complaint, puzzle games are supposed to be difficult, but the difficulty of the later levels was very high! It took me maaaany tries to get through them, but I felt very satisfied afterwards. This game is a gem among many rocks, for sure.