| 摘要 |
PROBLEM TO BE SOLVED: To increase the added value of a mode shift performance itself by including various implications in the mode shift performances. SOLUTION: When a symbol variation game based on a start holding ball stored before a start holding ball to be the object of a continuous performance is accompanied by a ready-to-win state performance, the continuous performance is executed from the next symbol variation game after the end of the symbol variation game accompanied by the ready-to-win state performance. Further, on the basis of the number of times of actually executed continuous performances, mode promotion drawing for determining whether to shift from a low latent probability mode to a high latent probability mode is performed. In this case, since the probability of holding a ready-to-win state in the middle becomes low during a low probability state, a big winning expectation degree becomes higher when the number of times of the actually executed continuous performances is larger. Meanwhile, for a high probability drawing state, the probability of holding the ready-to-win state in the middle becomes high and the larger number of times of the continuous performance are not easily executed, but setting is executed such that it is more easily shifted to a latent probability mode when the number of times of the continuous performance is smaller. COPYRIGHT: (C)2012,JPO&INPIT |
