| 摘要 |
PROBLEM TO BE SOLVED: To preferably suppress passion for gambling and to suppress reduction in interest by providing variation in bonus games.SOLUTION: A performance is executed under a predetermined performance mode according to a prize selected by an internal lottery executed every one game. When a predetermine prize is selected in the internal lottery, it is determined in different selection probabilities which performance mode in a plurality of performance modes would be executed. Execution lotteries for a best performance and a happy performance are executed in a predetermined probability. If the lotteries result in win, games capable of avoiding finish of replay time which may be continued until a predetermined finish requirement is accomplished or replay time which may be continued until an internal lottery bonus prize is selected are executed. Under at least a standard play mode, the play mode may be controlled into a premium best lottery mode where execution of a best performance is always determined by a lottery, a high probability lottery mode where execution of a best performance or execution of a happy performance is easily determined by a lottery, or a low probability lottery mode where execution of a best performance or execution of a happy performance is hardly determined by a lottery.SELECTED DRAWING: Figure 2 |
