| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine for setting an optimum achievement condition in accordance with a player thereby to improve the partition will in a player participation type performance.SOLUTION: A sub control board executes a player participation type performance, in which a gauge rises step by step each time when an achievement condition is achieved by pushing a performance button by a predetermined number of times. A difficulty determination section determines that the achievement condition is easy, if an achievement probability having achieved the achievement condition is at or higher than an upper limit threshold, and determines that the achievement condition is difficult, if the achievement probability is at or lower than a lower limit threshold. If it is determined that the achievement condition is easy, the achievement condition changing section changes the achievement condition so that the achievement probability may drop. If it is determined that the achievement condition is difficult, the achievement condition changing section changes the achievement condition so that the achievement probability may rise. |
