Really cool!
I couldn't make heads or tails out of this game at first, but once I got the hang of it, it was really fun! It's a great original idea and can at least teach you about the laws of physics. At first I thought the goal was to get them to hit the bottom of the screen, but it was actually to get them to touch! This was a real puzzler, as I didn't get that far, but still it was quite enjoyable.