I like the concept behind this game, but I found that the unreliability of the physics-based movement for the crystal ball took a lot of the fun out of it. If the ball could be moved directly while holding down C and the focus was more on the teleportation stuff, I think it could make for a cool puzzle game!
Minor nitpick: there doesn't seem to be any diagonal movement.
Also, the pixel grid effect on the screen was a nice touch!