| 摘要 |
PROBLEM TO BE SOLVED: To naturally rush into sudden-probability-variation or sudden-time-shortening without allowing a player to have an unnatural feeling though the specification follows an existing game rule. SOLUTION: A first variable prize winning port performs an opening and closing operation to close within a first prescribed time from opening by first prescribed times in the case of a first jackpot state. A second variable prize winning port 14 performs the opening and closing operation to close within a second prescribed time being shorter than that of the first prescribed time from opening by second prescribed times being smaller in number than the first prescribed times in the case of a second jackpot state. The second variable prize winning port 14 is arranged as a part of a movable accessory, which is disposed on a game board, in addition to the first variable prize winning port. In this case, even when the movable blade members 14a, 14a of the second variable prize winning port 14 performs the opening/closing operation twice in the case of winning in the sudden-probability-variation, it is highly possible that the player is not aware of the opening and closing since a movement is reduced in the second large prize winning port 14 being the movable accessory in the shape of a character. COPYRIGHT: (C)2007,JPO&INPIT
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