| 摘要 |
PROBLEM TO BE SOLVED: To provide a pinball game machine that helps solve a variety of problems concerning probability variation by setting appropriately a period of occurrence of probability variation. SOLUTION: Probability variation is made to occur when a right occurrence condition occurs due to the detection of a specific ball detector 53 subject to leading out of probability variation success patterns, and probability variation is ended when a right occurrence condition occurs due to the detection of the specific ball detector 53 subject to leading out of success patterns or when there is no detection by the specific ball detector 53 despite the operation of a variable winning opening 47 (opening and closing pieces 49a and 49b), whereby halfway disappearance of the right occurrence condition can be prevented and a deliberate conduct to intentionally terminate the right occurrence condition can be checked. |
