During a slot machine game, game effects are also displayed on a liquid crystal panel 39d provided in a reel display window unit 39, and thus the liquid crystal panel 39d serves as a new machine component for performing game effects. Therefore, new effects for the game can be performed on the liquid crystal panel 39d, which facilitates maintaining the novelty of game effects. Furthermore, a reel glass base 39b and a bezel metal frame 39c are interposed between a transparent acryl plate 39a and the liquid crystal panel 39d. As a result, the display unit of the liquid crystal panel 39d is disposed in a position recessed from the transparent acryl plate 39a. Therefore, the display unit of the liquid crystal panel 39d is provided with depth feeling, and can be clearly viewed up to the edge of the display unit.