Kind of odd... The concept is weird and the levels aren't particularly challenging, just move the red ball to the green ball. But the physics are nice, it's a neat utility to mess around with, and overall it has potential. Maybe if there was some other aspect of challenge to it, like if you could only move the ball with other items or if you used the arrow keys and had to get past obstacles or something, I dunno. Either way, it's a neat thing with potential but it'd be nice if there was more of a challenge to it.