PURPOSE: To easily exchange a game machine by composing the front of the game machine of a door set in such a way that it can be rocket and opened/ closed freely, and composing the game machine loaded on the door of exterior components loaded in state where they are exposed to a passage side and interior component hidden from the passage side.

CONSTITUTION: The game machine comprised by providing connectively a slot machine 1 and a medal rental machine 2 is assembled in cabinet 7 equipped with a rectangular frame body 5 and a front door 6. The game machine is composed of the interior components such as a pattern turning unit 12 which drives three pattern travel devices 11 individually and substrate case for control, etc., assembled in a state where they are hidden from the passage side, and the exterior components such as a prize display panel 14 on which a prize state and a game method, etc., are displayed, a pattern display panel 16, an operating unit 17, an ornamental panel 18, and a medal pan 19, etc., assembled in a state where they are exposed to the passage side. The interior components are assembled in an aperture part 26 provided at a cover 6, while, the exterior components are loaded so as to cover the edge of the aperture part 26.