Wii Wheel:Transform your Wii Remote in to a steering wheel that feels natural in anyone's hands. (Wii Wheel not included)
Worldwide Racing: Play with up to three friends locally or challenge up to 11 friends via Nintendo Wi-Fi Connection in the biggest Mario Kart race yet! All tracks and modes of play are available for online races.
Mario Kart Channel: Visit the Mario Kart Channel on your Wii Menu to check regional and worldwide stats, friend rankings, download ghost data, participate in worldwide Time Trial events , and more!
New Wheels and Courses: cruise brand-new tracks and arenas, or enjoy a blast from the past going fender-to-fender on one of the classics. Tired of riding on four wheels? Bust out one of the all-new motorbikes for special tricks and techniques.