vtech Marble Rush Ultimate Set - Ages 4+ This building set includes 135 building pieces and features a spinning Ferris wheel, a musical light-show cone, fast tracks, extreme launchers and more that easily connect together Color-coded blocks and easy-to-follow guide help you construct three different builds from beginner to advanced or create your own; includes 10 marbles Accredited STEAM (Science, Technology, Engineering, Art and Math) Toy by the Toy Association Intended for ages 4+ years; requires 2 AA and 3 AAA batteries; batteries included for demo purposes only; new batteries recommended for regular use