WiiPhysics is a physics playground for the Wii, much like Crayon Physics or PocketPhysics. It uses Box2D and libwiisprite.

Changes:

+Added Weld Joint
+Added a second player (with limited capability)
(Second player can drag, toss, freeze, unfreeze shapes)
+Fixed Jumping of pen drawn shapes on create
+Fixed placement of pin (proper pin joints now)
+Added realistic grass.
+Fixed bugs and crashes. (Specficially related to pully)
+Restructured backend data management system.
+Fixed pointer detection for selecting rectangles.
+Added Support Button
+Increased Object Limits

http://www.wiibrew.org/wiki/WiiPhysics