| 摘要 |
A game machine comprises a physical lottery system and a control unit, the physical lottery system imparting a physical motion to a ball on a bingo stage having a plurality of winning prize pockets corresponded to at least one option respectively, and determining a selected option depending on which of the winning prize pockets the ball has been taken in; the control unit executing a predetermined game in association with the lottery result by the physical lottery system and delivering to a player amusement value of the amount depending on the game result, wherein a probability to select each option is calculated based on the lottery result within a predetermined sampling period, and in reference to the calculated probabilities the payout rate of amusement value in the game is controlled.
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