| 摘要 |
A method of operating contoller-based progressive gaming system (200) having a plurality of gaming machines (G1-Gk) wherein each gaming machine (G) generates unit bet information indicative of a number of unit bets supplied to a machine (G) for playing a game. The method comprises the steps of randomly selecting a bonus mode activation value (218) between a high (212) and low (214) limit, providing a current value (220), providing a base value (216), incrementing the current value (220) when the gaming machines (G) are played so that the current value (220) is incremented by a fixed amount of each unit bet received by each gaming machine (G). A bonus mode time period is entered when the incremented current value (244) is equal to or exceeds the bonus value (218). Eligible machines (262) are locked-in and random bonus jackpots are made during the bonus time period. Each bonus award decrements the current value (220) by the amount of each award and the bonus mode time period is ended when the current value (220) is less than or equal to the base value (216).
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