| 摘要 |
PROBLEM TO BE SOLVED: To give the feeling of expectation or tension to players and to make the numbers of acquired medals differ among the players by changing a profit inherent in a specified play during the specified play. SOLUTION: A specified play executing means 70 for performing the specified play, which is different from a special play, having the greater value of expectation on the number of acquired medals than ordinary play when prescribed conditions are satisfied is provided with an initial value setting means 71 for number of times of specified play for setting the initial value of a number of times of the specified play, play numbers updating means 72 for updating the remaining number of times of specified play, change condition discriminating means 74 for discriminating whether conditions for changing the remaining number of times of specified play are satisfied or not, play time calculating means 75 for calculating the new remaining number of times of play changing the remaining number of times of play up to the moment according to a prescribed function when it is discriminated that the conditions for changing the remaining number of times of specified play are satisfied, and specified play time setting change means 76 for changing the calculated remaining number of times of play to the new remaining number of times of play.
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