| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which can increase excitement and enjoyment of a game by varying a performance in accordance with a game condition after relating the performance of a symbol variation game to the game condition. SOLUTION: Even when a probability variation determination performance is carried out and a determination to grant a probability variation performance mode can be recognized, it is made undecidable whether or not a 15R probability variation jackpot game or a 7R probability variation jackpot game promising the putting out of prize balls is to be granted. When a risk performance is carried out, the game machine enables players to draw attention to whether or not a probability variation performance mode is granted and to whether or not a first performance is carried out and how a second performance is carried out. COPYRIGHT: (C)2010,JPO&INPIT
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