| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine capable of suppressing the decrease in interest.SOLUTION: The game machine comprises accessory lottery means which uses game balls entering through a prescribed entry port to perform an accessory lottery in the way that a lottery process can be visibly recognized, and a jackpot game is executed on the basis that the accessory lottery is won. In a normal state, a prescribed result is obtained in a prior lottery and a specific result is obtained in an approach lottery. Moreover, even when game balls enter through an entry port opened on the basis that the specific result has been obtained, the accessory lottery is performed so that winning occurs only with a prescribed probability. The accessory lottery is performed so that, in a high probability state, it is won with an expectation value higher than in the normal state. In the accessory lottery, although it is performed in the way that the lottery process can be visually recognized, it is hard to be grasped whether in the high expectation state or in the normal state from an operation mode of the accessory lottery means.SELECTED DRAWING: Figure 3 |
