ThinkFun Gravity Maze Marble Run Brain Game and STEM Toy for Boys and Girls Age 8 and Up – Toy of

Amazon.com Price: $29.95 (as of 18/02/2020 07:30 PST- Details) & FREE Shipping.

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Trusted by Families Worldwide – With over 50 million sold, ThinkFun is the world’s leader in brain and logic games.
Develops critical skills – Playing your way through the challenges builds spatial reasoning and planning skills, and is partly an engineering and building toy that provides a great stealth learning experience for young players.