| 摘要 |
PROBLEM TO BE SOLVED: To improve playability. SOLUTION: When the number of held balls exceeds a prescribed number, a lottery is performed on a roulette display device 101. Corresponding to the lottery result, a tulip 120 is opened and game balls are guided to a start prize winning hole 104. Therefore, since playability is improved, a player can be prevented from intentionally stopping play. |
