Physity is a rectangular track that has some roads and asphalt but has objects used on San Francisco and London, even though this is another of one of the test tracks. It has traffic and pedestrians, but only the American taxi cabs from San Francisco are used as traffic vehicles in this early test-bed. While it does have a sky, it is misplaced. It was presumably used to test objects, traffic, and pedestrians. The player can still use this track, with the help of the MM2 Revisited mod.