| 摘要 |
PROBLEM TO BE SOLVED: To improve a game performance by changing the rotating speed of a rotator. SOLUTION: The rotating speed a the end of a game during rotation of each drum 30, 31, 32 is changed and the prize number is also changed according to the rotating speed. Accordingly, the game performance can be improved by changing the rotating speeds of the drums 30, 31, and 32.
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