Great game!
Awesome game. Sometimes the walkthrough was needed, but it didn't kill the fun of the game. The bonus level switch is a nice touch, as is the level designer (which was very clear, thank you for that)
One point of criticism though, the face switch could've had more faces in it. As it is the only thing you can give your own touch to while playing. Again, it doesn't make the game less, just something I would've liked to see.
The playing with gravity is really cool. I always fall on the ground due to earths gravity, now I had to deal with four gravity forces. Very original, me likes.