| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine allowing an easy change in setting of a value adding rate of a game result value of a game machine without relying on the skill of a skilled hand. SOLUTION: In a special prize win determination, a special prize win rate, or an actual prize winning degree to a second variable prize winning ball device (big win port) and a special prize win rate reference, or a preset specific comparative reference, are compared with each other (SS1) and a first variable prize win ball device (start prize win port) as a special prize win extent changing game device is controlled so that the special prize win degree approaches to the special comparative reference according to the comparison result (SS3 and SS5). The setting of the special comparative reference is changed by a setting operation means artificially operable thereof.
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