There is plenty of Marble Mania fun to be had with the Twin Twister! The 3 in 1 Techno Gears Marble Mania Twin Twister includes over 200 pieces and is an action-packed marble maze with 2 spiral lifters and multiple building options. Complete with colourful twists, turns and tracks, the set includes both a hand crank and a motorised gear lifter to take your marbles up to the top of the run for another exciting adventure. By encouraging children to follow directions, create patterns and understand mechanical flow, children will develop core cognitive development skills. The Marble Mania Twin Twister helps builds knowledge of mechanics and engineering, and aligns with the Science, Technology, Engineering and Math standards. Other educational benefits include encouraging thinking and learning, challenges problem-solving skills, as well as promoting fine motor skills and confidence and problem solving. Youngsters can enjoy even more fun by building the optional Corkscrew and Vortex 100+ piece sets as well! Suitable for age 8 years and over. 2 x AA batteries not included.