To instantly pop out a decorative movable object, and to allow the decorative movable object to shift from pop-out operation to pop-in operation, in a game machine.

A Yakumono (accessory) operation unit provided in the game machine includes: a biasing means biasing the decoration movable object toward a pop-out position; a holding means holding the decoration movable object at a pop-in position; a first drive means releasing the decoration movable object held by the holding means; a connection member where the tip end rotates when the decoration movable object moves between the pop-out position and the pop-in position, around a base end supported pivotally and rotatably on a rotating shaft; and a second drive means moving the decoration movable object in a pop-in direction against biasing force by the biasing means via the connection member by driving a pressing member.