| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a novel game machine capable of optimizing the probability of the shift to a special presentation mode called a "mission mode", etc. from a regular presentation mode. <P>SOLUTION: When the presentation mode is shifted from the special presentation mode to the regular presentation mode, the probability of a lottery for the shift to the next special presentation mode is varied based on the number of times of variation of presentation symbols after the special presentation mode is terminated. Accordingly, the probability of occurrence of such inconvenience that the mode is immediately shifted to the next "mission mode" again after the "mission mode" is terminated, or that, on the contrary, the mode is not shifted to the "mission mode" or hardly shifted to the "mission mode" after the long-time play, can be lowered, and therefore, the probability of the shift of the presentation mode can be optimized. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
