In a slot machine, once a player indicates the bet amount with respect to a “continuous game”, one or a plurality of “continuous games” including unit games that are executed by the number of times which can be indicated by the player is specified through the bet amount with respect to the “continuous game” indicated by the player and the minimum bet amount with respect to a unit game which can be set by the player. Thereafter, the operation with respect to all buttons corresponding to the “continuous game” thus specified is validated. The player operates any of the buttons thus validated, whereby the “continuous game”, which is constituted of unit games executed by the number of times indicated by the player through the above-mentioned operation, is executed. Then, the bet amount with respect to the “continuous game” indicated by the player is evenly allocated to each unit game constituting the “continuous game” indicated by the player. Incidentally, the bet amount which was left after the bet amount has been evenly allocated with respect to each unit game constituting the “continuous game” is returned to the player.