Switchball

[Xbox Live Arcade] Switchball challenges players to control an ever-changing ball along a narrow and challenging course suspended in midair. A polymorphous ball exhibits different physical characteristics as it changes form as either a standard Marbleball, a feather-light Airball, an electrically charged Powerball or a dense and powerful Metalball. Players will have to solve their way through challenging levels packed with tricky obstacles, traps and mazes. With beautifully rendered 3D environments including Skyworld, Iceworld, Caveworld, Cloudworld and Lavaworld, Switchcball features an advanced physics engine, allowing players to interact with objects just as they would in the real world. [Sierra Online]