| 摘要 |
PROBLEM TO BE SOLVED: To provide a slot machine that improves the interesting property by varying a value available to a player in a special game condition in accordance with the player's skill. SOLUTION: The slot machine ends a BB when the number of mediums put out during the BB reaches an upper limit. The upper limit for a BB based on the winning of the BB at a distribution rate correspondent to the number of games required from the materialization of a BB flag to the occurrence of a BB winning is chosen from a plurality of values. COPYRIGHT: (C)2006,JPO&NCIPI
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