Hundreds of Built in Levels The single player game has 200 levels to explore. 100 co-op and 50 versus levels for exclusive multiplayer gameplay.Networked Content Download new maps from the N server; design new maps and show off your slick ninja moves.Level Editor Design maps and share them with friends or the world using the integrated level editor and the ad-hoc or infrastructure modes of the Sony PSP.Multiplayer and Playlisting Explore various modes of multiplayer play both coop and competitive. Download or design new multiplayer maps and arenas then switch up the action by creating playlists of your favorite multiplayer levels.ESRB Rating: EVERYONE with Mild Fantasy Violence