[Expired]ThinkFun Gravity Maze Marble Run Logic Game and STEM Toy for Boys and Girls Age 8 and Up

• Amazon.com offers the ThinkFun Gravity Maze Marble Run Logic Game and STEM Toy for Boys and Girls Age 8 and Up for $19.99 .
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Features：This gravity powered logic maze is sure to put your visual perception and reasoning skills to the test. The towers can be arranged in a wide variety of visually stimulating structures but, for each challenge, you’ll have to think carefully to build a path that will carry your marble to the Target Tower. Your Goal: Create a maze that will carry a marble from the Start Position to the Target Tower.