A good game needs a clear focus. The children are presented with a rimmed tray with a hole in the center. The empty container below clearly defines the goal of getting the ball to roll through the hole by tilting the tray. The tray is large enough to require a player on each side. To control the path of the ball the children need to split their attention between their own moves and their partners’ moves. An audience of peers motivates the children to play longer and shares in their fun.