PhysicsEditor is a GUI tool to create collision shapes within seconds! Without specifying any additional options PhysicsEditor already creates very good results, but you also have enough options available to adjust things to your needs.
N is an award-winning 2D action/puzzle platformer reminiscent of lode runner: you're a tiny stick figure running around in a puzzle-y world inhabited by enemies. But in N, there's a twist: the ninja is driven not only by thirst for gold, but also by sweet physics...