The K NEX Mario Kart Wii Building Set brings the game to life and provides your little builder with excitement in making the tracks and racing the figures. It includes 124 colorful durable plastic pieces a buildable Yoshi figure and bonus characters Bullet Bill and invincibility star. With full color step-by-step instructions this K NEX Building Set Yoshi vs. Lava Plumes track is easy to assemble and teaches your child valuable skills. When kids are done making the course they can watch Yoshi race past the Lava Plumes which are a movable obstacle in the course from Bowser s Castle in his motorized kart. This kids building set is part of a collection inspired by the video game and your kid can collect and combine the courses for even more racing fun. TWo AAA batteries are required to operate the motorized vehicle. The K NEX Mario Kart Wii Building Set is meant for children ages 6 and up.