Take gravity to the next level! Kids build problem-solving skills, spatial reasoning and dexterity as they “puzzle” their way through 60 progressively more difficult challenges. Children just construct a maze, then take to the air, flipping and twisting to guide the ball to the finish! Kids can even create their own challenges—to become the master of gravity! Includes 22 pieces and a challenge booklet; largest piece measures 8 1/9" x 4/5" x 8 3/5".