| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine which prevents a fraudulent change of winning probability in a setting change operation section. SOLUTION: A setting change button 45 to change winning probability is composed of an upper shift button 45a which gradually increases winning probability every time the button is depressed and a lower shift button 45b which gradually lowers winning probability every time the button is depressed. The upper and lower shift buttons are stored in a common supporting member 45c and made freely rotatable. A function stopping means to stop the function of the other shift button not operated for a fixed period when either the upper shift button or the lower shift button is operated. Furthermore, a display device 46 to display a set value corresponding to a lottery table selected when a setting change is made is provided in the housing of the game machine to ensure that the device is exposed by the opening of a front door 12. COPYRIGHT: (C)2006,JPO&NCIPI
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