| 摘要 |
PROBLEM TO BE SOLVED: To give much interest of a game by enhancing a value given by a normal electromotive part at a first game state than a second game state and by giving discriminating displays for discriminatively displaying display results of a variable display section satisfying a condition for opening the normal electromotive part. SOLUTION: On condition that hit pictures set changing from 1 to 3, 5, 7, 1..., a length of an opening time period of an electromotive prize-winning device 9 is alternatively set. Concretely, when the opening time period of the electromotive prize-winning device 9 is extremely short, a probability for producing prize- winning balls during an open state becomes low and a probability for raising a state for producing a right becomes low. When the opening time period is long, the probability for producing prize-winning balls during the open state becomes high, and the probability for raising the state for producing the right becomes high. By giving a discriminating display for discriminatively displaying the display result satisfying an opening device 9 and other display results of the variable display are given, a player previously clearly knows how a state of the display results of the variable display can be changed to open the electromotive prize-winning device 9. |
