The game resembles the Nintendo DS version of New Super Mario Bros, but allows up to 1-4 players to traverse the 2D levels as characters such as Mario, Luigi, Yoshi and Toad. Players can switch between single-player and co-op at any time.
"We admit, we haven't quite figured out how to move [Mario] into a fourth dimension," said Nintendo's Cammie Dunaway. "But that number, four, that's the key to Mario's next surprise."
"For the last fifteen years, Mr. Miyamoto has been thinking about one new way to let you play a Mario game that's never been done before."
New Super Mario Bros. will hit the Wii this holiday.