Stack and balance to win with the Shark Stack-up! Wooden Balancing Game from Mudpuppy! A classic game that benefits the development of fine motor skills, dexterity, and hand-eye coordination, this game is a family favorite! Children ages 4 and up play together to stack and balance ...Stack and balance to win with the Shark Stack-up! Wooden Balancing Game from Mudpuppy! A classic game that benefits the development of fine motor skills, dexterity, and hand-eye coordination, this game is a family favorite! Children ages 4 and up play together to stack and balance wooden sticks on the back of the wooden shark to win the game. Game set comes with a sturdy wooden shark base and 30 colorful wooden sticks to stack as high as possible! Just be careful not to knock any off!