| 摘要 |
PROBLEM TO BE SOLVED: To provide a game with variation by fluctuating the probability of generating a right advantageous to a player. SOLUTION: A prize winning port for generating a right is provided at a special device, and a generator 23 provided with a blade is provided in a communicable state above the special device. The blade is opened only when a specific pattern is displayed on a pattern display device 15 on the basis of prize winning to an operating port 16. When a ball passes the special device via the generator 23 in the open state of the blade to make a prize winning entry to a prize winning port, a right is generated, and a probability of displaying the specific pattern on the pattern display device 15 is changed to change the prize winning probability to the special device, that is, to the prize winning port. |
