16 levels. 4 "chapters"
-There's the "introduction chapter" where the characters become aware they're in a game.
-The "treehouse of horror" chapter with some Kodo & Kang action & some spoofs on THOH encounters (day of the dolphin, lard lad fight, etc)
-The "videogame spoof" chapter where they find they've been leased to multiple games... grand theft scratchy, medal of homor, etc
And no one knows what the 4th chapter is yet. Also unclear is if the 16 levels are divided equally into 4 levels per chapter.