| 摘要 |
<P>PROBLEM TO BE SOLVED: To enhance interest in a performance by enriching a foreseeing prediction mode to a holding storage means, and to enable a player to easily understand the difference in the mode. <P>SOLUTION: Various random numbers including a jackpot determination random number extracted when a game ball enters a start winning hole are held and stored (by a predetermined number of various random numbers) until variable display of a special symbol based on all of the start winnings prior to the start winning is completed, and an icon corresponding to each holding storage is displayed at a special symbol holding storage display part. A final display mode of the icon includes "?" where a selection ratio A in a jackpot (jackpot probability X) is relatively lower than a selection ratio B in losing and reliability is low, and "!" having high reliability. The latter includes "!" displayed from the beginning, and "!" displayed as "?" first and then changed to "!". In both of them, reliability (P=XA/(XA+(1-X)B)) of a jackpot is the same. <P>COPYRIGHT: (C)2013,JPO&INPIT |
