| 摘要 |
PROBLEM TO BE SOLVED: To provide a pinball game machine capable of constructing a novel probability variation system capable of attaining a probability variation at a positive standpoint having broken a passive standpoint resorting to machinery, thereby to enhance the interest sufficiently.SOLUTION: At a winning time of a special symbol lottery, under a predetermined condition, at least at one of a plurality of specific ball entries GT1 and GT2, a big winning port 9 is opened by the passage of game balls under the action of a condition device. In this case, a lottery is assigned to an excellent side ball entry port for opening the big winning port 9 with a first open pattern, which is relatively easy for the passage of game balls to a specific area 9V for a higher probability in the big winning port 9. When the big winning port 9 is opened by the passage of the game balls under the action of the condition device for another port unassigned as the excellent side ball entry, an inferior side ball entry port for opening the big winning port 9 is assigned with the second open pattern which is more difficult for the passage of the game balls to the specific region 9V than the first open pattern. |
