Mario Kart 7 players can purchase an official Mario Kart 7 Wheel accessory for use on their Nintendo 3DS system.The wheel attachment fits snugly around the 3DS allowing players extra grip for the game's tilt-sensing gyroscopic controls. Mario Kart 7's arm-swerving control method is optional and sees gameplay transferred into first-person view. It's a control pad-free alternative similar to the Wii Wheel add-on for Mario Kart Wii. Nintendo 3DS Console and Mario Kart 7 sold separately