Two levels, two different styles of play. The first level has normal physics and no aliens. (It does have those Explodobobs). The second level has the "alien weapon physics model" and a different strategy. A very tall, vertical, in terms of world units, map. Can be played EmFh, or KotH. The hill being the lighted poly on the ground floor. Three different main platforms, 2 in the tower and one across the arena. Access is by long staired, weaving hallways. Some of the bob tricks are pretty funny. AND make sure you power up!