Amazing and inovative gameplay; beatiful graphics. Masterpiece!
Also, this game has both amazing graphics and beautiful sounds, which help to create an unique (and pretty dark) atmosphere. And with tons of levels, the game manage to became something both challenging and funny.
Unfortunately this masterpiece is only available for Apple devices, but I hope they create an Android and a PC version of it! Then it'll be more than perfection.
But for now, as it's free on the Apple App Store, this game is a "must-have" app on any iDevice. (And pay $3,99 for such a great and well-done game isn't that bad).