Have a whale of a time completing this stacking challenge. Can the whale balance on the wave? This is a game of skill and challenge but built for kids to achieve. The base includes guide rods to help stability, pieces designed for lower down come with guide holes. The challenge increases with each level as the pieces stack above the top of the guide rods. The image on the box provides a guide on where to stack each piece to complete the whale. Can be played alone or with the whole family! Players will take turns to stack each piece on top of the wave without making it topple over... The last player to successfully add a piece wins! It includes thirteen wooden play pieces.