| 摘要 |
A number of gaming machines, such as fruit machines, are linked through a common control unit to a display which shows to all the players of the machines a range of prizes. When there is a special win on any machine, a selection is made from those prizes and the chosen one awarded to the player. As the prizes are won, so those on offer reduce, but once a star prize, of greater value than any of the others, is awarded, the full range may be restored. There can also be treasure chest keys on the display, and a winner of a key can try to open a treasure chest for a jackpot win. With only one out of many keys that will work, a very large jackpot is possible, and the amount, and the number of keys still available, can be part of the display.
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