The present invention provides a prize acquisition game machine capable of enhancing interest of players to play the game compared to conventional prize acquisition game machines. In a prize acquisition game machine having a configuration in which a prize falls off from a placing surface of a prize placing base to be paid out by an extension/contraction operation in a fore-and-aft direction of an arm member which is movable in an operation plane by the player's operation, there is provided a rocking mechanism for rocking the prize placing base in the fore-and-aft direction between the prize placing base and a support member supporting the prize placing base such that the prize placing base rocks in the fore-and-aft direction by a function of the rocking mechanism when the arm member is brought into contact with the prize placed on the prize placing base.