Motorised for exciting performance that sends the car up the chain lift and spiraling through track! This set comes with over 300 parts, primarily rods & connectors, to build a K"NEX thrill ride that stands over 1.5 feet tall! And if you collect Vertical Viper and the Wonder Wheel (sold separately), you can have a working amusement park right in your home. Batteries: Requires 2 "AA" batteries, not included. 7 Years +