e7 Superb
An excellent balance of art and gameplay that many big budget companies fail to do time and time again. Although the premise is different it reminds me greatly of games like Flower or Flow for the PS3 and I would honestly purchase this should you ever develop a console or PC version provided it had a few more levels of course!
I can see massive potential for even a co-op mode with the amazing original physics of the ground and that's the one thing that stands out above all else. Whenever I feel a genre has become stagnant with sequels and copies (Yes I'm looking at you FPS), something like this comes along which restores my faith in human creativity.
SHIFT 2