Mario Kart 8 WiiU Turn Your Racing Experience Upside Down! For the first time, Nintendo's Mario Kart franchise comes to the Wii U console in full HD, introducing new racing circuit designs and anti-gravity karts that will have players driving upside down. Players will also enjoy a variety of series-favorite features, including the return of 12-player online competitive play, hang-gliders, underwater racing and motorbikes.