This is an action-adventure game in which players control an engineer who must restore gravity to the world by extracting an odd element (i.e., "F.U.N.") from its population. These "cartoony," gnome-like inhabitants (i.e. Buddies) are a central component of the game, and are depicted nude throughout; their bare buttocks can be seen as they waddle and jump around each level. Players can kick and throw objects at the Buddies to collect F.U.N.; when hit, Buddies laugh and disappear amid colorful bursts of confetti. Frequent on-screen notifications and dialogue make light of some of the violent acts (e.g., "If you have two bits of brain left—sacrifice yourself today," "A buddy was squashed by a dumbbell!" and "Now that's heroism!"/"A Buddy was turbined into mincemeat!"). Language such as "damn" and "ar*e" can be heard in dialogue.
