Take creative play to massive new heights with the Magnetic Modular Track Car Set! As the ultimate mega expansion set, it gives young master builders total freedom to engineer intricate multi-level roller coasters, giant 3D tracks, and complex elevated labyrinths. Featuring powerful suction mounts and magnetic attraction, kids can take the action off the floor and stick giant track layouts onto smooth walls, glass doors, and windows—watching the motorized retro train race upside-down and climb vertical slopes.