Following a similar announcement for the PlayStation 3 two days ago, Nvidia has revealed that it has been approved as a third-party tools solution provider for the Wii console as well. As a result, their PhysX technology software development kit (SDK) is now available at no extra cost to registered Wii developers - this consist of an API and physics engine to bring more realistic game environments to consoles and let developers generate real-time effects previews for their games.
Nvidia typically touts the performance of PhysX on its graphics chips but, in the case of game consoles, the physics processing is done by the CPU. The PlayStation 3 is considerably more powerful than the Wii, but Nintendo's Wiimote is highly based on physics already so it should be interesting to see where this goes.