One or two players (on the same computer, in either co-op or deathmatch mode) control a plasmaworm through twenty increasingly difficult levels of play. The worm starts off as tiny fellow, gliding merrily along in its pulsating plasma tank by your control, on the prowl for the eidolons that randomly spawn. Players then guide their plasmaworm to the eidolon, gobbling it up. With each probability snack the worm grows longer. The object of each level is to devour a certain number of objects without crashing into the walls, or yourself, which is usually easier said than done!