Developed to coincide with the release of the DreamWorks Animation feature film of the same name, Monsters vs. Aliens lets gamers take control of five monstrous protagonists as they battle aliens through more than a dozen different levels. Players can scale walls and bash enemies with The Missing Link, a macho half-ape, half-fish creature; swallow enemies and seep through cracks as B.O.B., the sticky blob of gelatinous goo; lift heavy objects and use cars as rollerskates as Ginormica, the 49-foot-11-inch woman; and shoot silk or unleash a paralyzing sonic scream with Insectosaurus, a 350-foot tall grub.All four characters use a combination of special skills, environmental objects, and quick time events to battle giant robots working at the behest of the evil Gallaxhar. Action-heavy sequences find gamers traveling through the streets of San Francisco, exploring a top-secret government containment facility, and eventually fighting through Gallaxhar's gigantic mothership. Monsters vs. Aliens also features a co-op mode that lets a second player join the action as Dr. Cockroach, Ph.D., whose gadgets and brainpower help gamers reach hard-to-access areas.