Gravity Maze is one of ThinkFun's most popular stem toys children. It's a gravity powered maze game that includes 60 challenges of rising difficulty, from beginner to expert. Like all ThinkFun's games, Gravity Maze has an educational element – it's constructed to improve critical thinking skills and tie into STEM subjects like science and engineering. Playing through the progressively difficult brain teaser-style challenges will sharpen your mind. The Gravity Maze works to develop logical reasoning, spatial reasoning, and planning skills, all through fun gameplay. It also makes a fantastic addition to any home-school curriculum. Make sure that your z-axis is pointing up from the box if you don't the rest of the operations will not cut the correct part.