3...2...1...GO! Bring your favorite Nintendo video game off of the Wii and into real life with the K"NEX Mario Kart Ultimate Building Set - Bowser"s Castle! Brothers Mario & Luigi race against each other and through the ultimate multi-level Bowser"s Castle track dodging fiery Lava Plumes, spinning Fire Cogs, flying Fireballs and bone-crushing Thwomps! Connect the pieces to create an enormous track over 6" long - with multiple levels and jumps. Then build Mario and Luigi in their super-fast motorized karts and watch them go. Each obstacle has cool action YOU control. With the touch of your hand you decide who will spin out and who will race to victory! The K"NEX Mario Kart Wii Ultimate Building Set - Bowser"s Castle includes: * Parts to build Mario and Luigi * 2 Karts with super-fast battery-powered motors * Multiple moving obstacles like Thwomps, Fireballs and Fire Cogs * 4 collectible items from the game: a Mushroom, a Green Turtle Shell, a Banana Peel and Bullet Bill! * 26 pieces of double-wide, buildable, inter-connectable track that creates a multi-level, closed-circuit Bowser"s Castle Track! * Batteries not included. K"NEX is the only U.S. construction toy company focused on Building Worlds Kids Love™. K"NEX seeks to build young minds and encourage them to imagine, build and play with its exciting product line specially designed for kids ages 2 through 12. Creative open ended play, educational benefits, and family fun are just a snap away with K"NEX!