To propose a Pachinko game machine for suppressing an increase in player's irritation caused by continuously executing a fail defining symbol generation processes without losing amusement of a Pachinko game.
When the number of times for continuously executing the fail defining symbol generation processes exceeds a reciprocal of a winning probability, one of a plurality of mutually different delay periods is extracted to be effective, and a change is made to a winning probability state of a winning probability having high winning defining probability as compared with the winning probability at a lapse of the delay period. Therefore, by a new game for successively increasing a winning probability and a new game for randomly determining setting timing for increasing the winning probability, player's expectation toward establishment of winning is stimulated effectively, and player's motivation is increased. Also, the amusement inherent in the Pachinko game by the winning probability is maintained stably.
IWASHITA KEIICHIRO
SUZUKI NAOHIRO
| JP2005095449A | 2005-04-14 | |||
| JPH10165628A | 1998-06-23 | |||
| JP2006230809A | 2006-09-07 | |||
| JP2009240672A | 2009-10-22 |
Yu Yamamoto
Yasutoshi Iwata
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