With the K'NEX Mario & Yoshi Vs Stone Bowser Building Set, bring Mario" Kart" Wii to life. This building set involves plenty of creativity. Help Mario" and Yoshi" dodge huge fireballs as they race past the GIANT Stone Bowser" from the Browser's Castle Track. The set includes the parts to build Mario" and Yoshi", two Karts with super-fast, battery-powered motors, a Stone Bowser" that shoots fireballs with slamming action and three collectible items from the game: Bullet Bill, a Star and a Green Shell. It also includes 30 pieces of buildable, inter-connectable track that creates a closed loop. You can combine this set with other sets from the K'NEX Mario Kart WII Stone Bowser Series to build even bigger and more fun-packed tracks. Revive the excitement in Marios arena with this kids building set for children of ages 6 and above.