Each player attempts to maneuver a colored marble up an incline using a curved slider. The incline has plenty of holes in it allowing the marbles to fall through.. At the top of the tower is a platform which the marbles are stored. The first player to get all five of his/her marbles in the cup is the winner. As an extension, the publisher suggests continuing the game by getting each marble down the incline the same way. - BoardGameGeek