| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent occurrence of such a situation that the presentation of a ready-to-win state has not been executed for a long period of time while preventing unevenness in the frequency of presentation of the ready-to-win state. <P>SOLUTION: The value in a variation frequency counter is added with 1 every time as the variation of special patterns is started. When the value on the variation frequency counter becomes a set value of pre-ready-to-win state variation frequency, the ready-to-win state is determined to be provided. If a jackpot is determined, or if provision of the ready-to-win state is determined without determining a jackpot, the frequency of variation of special patterns to be executed before the variation of special patterns to be in the ready-to-win state next time is determined based on random numbers for determining the pre-ready-to-win state variation frequency and a table of pre-ready-to-win state variation frequency, and the determined frequency is set as the set value of pre-ready-to-win state variation frequency. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
