Stackable Tree Toy ,Self-balancing binary search tree children's educational board game interactive toys Features: Challenge yourself and test your skills: Your victory hangs in the with this stackable balancing tree building game to stack the brightly colored on the tree while keeping the tree balanced. Try to stack and not drop any of the colored. Player who make the tree tip or make any of the plastic fall loses. For one or more players: Play this table games for families, by yourself or with anyone else. Suitable for 1 or more players as needed. Makes a pleasure time waster game at home or on vacation Portable pleasure for all ages: Easy set up and make up. Can also be disassembled for storage and travel. This balancing game is has been one of the best selling toy balancing games around. A thinking game for adults, kids, children that is also an education toy as it teaches easy principles of physics and gravity. The primary thing is to find the point by placing/changing the position of the Small animals A good toy for family and friend to interact with, and a good gift for yourself and friend. Specification: Material: abs Size: About 13.2x13.2cm/5.2x5.2in Package List: 1Balance trees toy Notes: Due to different displays and lighting effects, the actual color of the product may be slightly different from the color shown on the picture. Thanks! Due to manual measurement, please allow slight measurement deviation.