Gameplay
The game is split into 22 levels for the three playable characters: Peter, Stewie or Brian. Peter and Stewie have eight levels, while Brian has six. Each character has his own unique style of play.
Peter's levels have a beat 'em up style, similar to Final Fight and Double Dragon. In Peter's levels, the player rampages across a section of town, attacking anyone and anything in his path. In addition, depending on the player's progression through the game, Peter will adopt a different persona as a result of head trauma, giving his attacks different animations but otherwise similar results. Peter's alter egos are Rufus Griffin, Hooker Peter and A.N.N.A. (Automaton Nuclear Neo-human Android), played in that order. Peter begins and ends the game as himself.
Stewie's levels resemble a shoot 'em up like Galaga or Space Invaders, but also with similarities to games like the Futurama video game. Stewie uses his upgradeable laser gun and conveniently placed "sky hooks" to move through various stages.
Brian's levels have more in common with stealth games like Metal Gear Solid and Tom Clancy's Splinter Cell. Brian must avoid detection by those around him, and can adopt disguises to fool onlookers. A secondary element in Brian's levels is avoiding his natural urge to urinate on things. Should the player remain near certain objects for too long (potted plants, fire hydrants, etc.), Brian will be forced to pee on them, exposing himself to those around him.
A key feature of the game are mini-games done in the same style as the cutaway gags that the show is famous for, usually lasting less than 10 seconds. The mini-games often repeat cutaway gags from the shows, such as Peter inexplicably burning his hand in a waffle iron. Successfully completing the mini-game offers a bonus: Brian becomes invisible for a short period, while Peter and Stewie receive power-ups for their respective abilities.
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