I am playing iPhysics on my iPod Touch for weeks now. If I understand it right, it is a remake of this game without any changes, just to make it playable on a jailbroken ipod touch/iphone.
There is a nearly endless number of levelpacks with some great ideas. It seems also to be quite easy to create some levels on your own for it.
The latest levelpack I am beating at the moment is "crayon golf" (you see, that there are probably some connections

).
The game is just awsome and a lot of fun for much to long schoollessons
