"Mario Kart 8 is an upcoming kart-racing game in development for the Wii U. It is the eleventh installment in Nintendo's Mario Kart franchise, the eighth in the main series and is due for release in Spring 2014.
Mario Kart 8 combines the elements of Mario Kart Wii and Mario Kart 7 with new anti-gravity racing.
The game continues the traditional gameplay of the franchise, in which characters from the Mario universe race against each other in go-karts, using various items to hinder their opponents in item boxes. Returning features from previous installments include motorbikes and 12-player racing from Mario Kart Wii, and hangliders and underwater racing from Mario Kart 7. New to this series is a focus on anti-gravity sections, allowing racers to drive on walls and ceilings. The game will feature local and online multiplayer modes for up to twelve racers. A new feature, called Mario Kart TV, allows players to use Miiverse to share clips from their races. The game will be compatible with the Wii U GamePad, Wii Remote and Nunchuk and the Wii Wheel."
Source: Wikipedia, "Mario Kart 8", available under the CC-BY-SA License.