These sets are stacking and balancing fun! Just stack and balance your robots to create remarkable and interesting shapes. These fun and challenging sets provide endless building fun! A building and stacking test of skill, how many ways can you find to link the robots together while keeping them balanced? Create an almost endless number of shapes and designs as you find different ways to put them together. Uniquely designed so they can connect in multiple ways, it’s a test of creativity, imagination, skill, and balance. Contains 9 wooden robots, all with a durable, non-toxic finish.