The 3-in-1 Techno Gears Marble Mania Twin Twister includes over 200 pieces and is an action-packed marble maze with multiple building options. Complete with colorful twists, turns, and tracks, the set includes both a hand crank and a motorized gear lifter to take your marbles up to the top of the run for another exciting adventure. Enjoy even more fun by building the optional Corkscrew and Vortex 100+ piece sets as well! This is a great STEM educational product that encourages thinking and learning, challenges problem-solving skills, and expands knowledge of mechanics and engineering. Requires 2 AA batteries (not included).Contents include: 201 Construction Pieces, 6 Marbles. Requires 2 AA batteries (not included).For 1 or more playersAges 8 and upMade in ChinaBrand new condition in original packagingWipe clean with dry or damp clothWarning: Choking Hazard - Contains small parts not suitable for children under 3 years.