| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that when any winning probability oscillation game has the same jackpot generation probability as the whole of a winning probability oscillation duration, a player may feel monotonous in the winning probability oscillation game. <P>SOLUTION: A Pachinko game machine 10 includes: a special game control unit 120 for executing a special game when a lottery conducted based on the entrance of a game ball into a second start pocket 63 has a jackpot prize; and a specific game executing unit 122 shifting a normal game after the end of a special game to a winning probability oscillation state, and terminating the winning probability oscillation state when the following jackpot is not generated during a first period having a fixed length, after shifted to the winning probability oscillation state. The specific game executing unit 122 shifts the second start pocket 63 to a ball entrance facilitating state in the normal game after the end of the special game, and terminates the ball entrance facilitating state when a following jackpot is not generated during a second period after shifted to the ball entrance facilitating state. The specific game executing unit 122 selects any of a plurality of types of candidates of the second period which have different lengths, as the second period relating to the ball entrance facilitating state, in every special game. <P>COPYRIGHT: (C)2012,JPO&INPIT |
