(Made In ) Unlike the Traditional Building Blocks, Every Block is a Polyhedron, Each Different in Size,Color, and Weight. The Balance Stone Stacking Game is more Challenging. It Supports Various Modes From easy to Hard, Cultivating and Improving Children's Concentration and Patience and Developing Their Intelligence. Playing with Blocks can Develop Children's Independent Thinking and Logical Reasoning Skills, Stimulate Children's Hands-On Skills and Creativity. Play with Parents or Partners can also Develop the Child's Teamwork and Social Skills.