| 摘要 |
PROBLEM TO BE SOLVED: To make the interval of the shift of presentation stages appropriately irregular. SOLUTION: When the play is in a bonus state, execution of an in-bonus presentation is determined. If the play is not in the bonus state, execution of a continuous presentation is determined according to the state of winning of an internal lottery and the result of display of a variable display device. When execution of the continuous presentation is determined, the continuous presentation (and the following additional presentation) are executed over a plurality of game rounds. On the other hand, a single presentation is executed according to the state of winning of the internal lottery in a game round in which the continuous presentation is not executed. The in-bonus presentation, the continuous presentation and additional presentation, and the single presentation are executed according to the presentation stage. One is added to the value in a stage shift counter every game in which these presentations are not executed and in which a replay is not won, and when the value in the stage shift counter reaches a prescribed value, the presentation stage is shifted. COPYRIGHT: (C)2008,JPO&INPIT
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