To provide a slot machine, in which effect images can be fully enjoyed, and effect images can be displayed with variation even in a case where a stop siwtch is operated at a short interval by a player.

The device includes a reel control means to execute stop control to a reel out of a plurality of reels being rotated corresponding to a reel stop signal when the reel stop signal is received, and an image display means to control display of the effect images. In a case where all the reels are stopped based on operation of the player to finish a game before a prescribed part of the effect images supposed to be displayed in a single game in an image display means, control is executed to display the rest of the effect images that were not displayed in the next image. When prescribed conditions are met in the next game, control is executed to change the effect images to be displayed from the rest of the effect images which were not displayed into other effect images.