Knex MarioKart Wii Mario and Luigi VS Goombas and Thwomps Building Set Interconnectable track creates a closed loop. Buildable Thwomps and Goombas obstacles provide swinging, slamming action. 260-piece set includes: Mario, Luigi, greet turtle shell, banana, mushroom, star, building pieces & instructions Requires 4 "AAA" batteries (not included) Ages 6+