| 摘要 |
<p>PROBLEM TO BE SOLVED: To introduce a control so as to prevent an excessively beneficial opportunity from being given to extremely skilled players, while increasing technical intervention properties.SOLUTION: When a game ball enters a first starting hole 62, a small win is attained at a predetermined probability, and the small win causes a specific winning device 93 to open. When the game ball entering the specific winning device 93 falls in a specific area 96, "a small win developed jackpot" is attained and a jackpot hole 91 is opened, then a development special game is executed. When the small win is attained, a transition lottery for determining whether a transition after the development special game to a time shortening is permissible is executed. The result of the transition lottery is indicated at the timing of indicating the small winning to a player. A valid period is set as a time which is shorter than a time assumed on design as a time required from the hitting of a game ball until reaching the specific area.</p> |
