New Super Mario Bros. Wii is a platform game developed for the Wii. A follow-up to New Super Mario Bros. Like other side-scrolling Super Mario games, the player controls Mario as he travels eight worlds and fights Bowser's henchmen to rescue Princess Peach. New Super Mario Bros. Wii was the first Super Mario game to feature simultaneous cooperative multiplayer gameplay; up to four people can play in cooperative and competitive multiplayer modes, taking control of Mario as well as Luigi and one of two multicolored Toads.