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From The Developer: The Mushroom Kingdom just got a whole lot more hectic as Mario and company double up for furious kart racing, but this time they're driving two-seaters! Pick a partner and race through wild courses as you compete in tough circuits or duke it out with power-ups and items in battle arenas. Features Double the fun! Each kart holds two racers that can switch places at any time. Choose from a huge cast of favorites, like: Luigi, Peach, Baby Mario, Baby Luigi, Wario and many more, and pair them up in any combination. More »