The Mushroom Kingdom just got a whole lot more hectic as Mario and friends double up for furious kart racing. This time around, each kart holds two racers that can switch places at any time, so choose from a huge cast of favorites and pair them up any way you see fit. The character in front handles the driving duties, while the character in the rear doles out damage with six normal items and eight special items that only specific characters can use. Get ready for some intense multiplayer mayhem with your favorite characters, including Mario, Luigi, Donkey Kong, Peach, Bowser, and Koopa.