| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a game machine capable of lightening the unfairness of a performance due to the delay of the operation speed of operation means.SOLUTION: A pachinko game machine 10 comprises lottery means for performing a lottery at a predetermined winning probability U1 each time an operation button 29 is operated in an effective period E2, and displays an achievement performance, if a lottery is hit, but an un-achievement performance if the lottery is missed. The effective period E2 contains a first effective period E4 and a subsequent second effective period E5. The winning probability U1 is so reset after the lapse of the first effective period E4 that the winning probability U1 in the second effective period E5 may become the lower as a first period operation frequency P1 or the operation frequency of the operation button 29 during the first effective period E4 is the more.</p> |
