To solve the problem that it is difficult to accurately manage the game state of a pachinko game machine provided with a forced stop button just by the number of times of the variable display of special patterns.

A stop information transmission means 148 transmits stop information indicating that the variable display of patterns is forcibly stopped to an external device. The number of times of stop counting means 134 counts the number of times of stop, which is the number of times of forcibly stopping the variable display of the patterns. The stop information transmission means 148 transmits the ratio of the number of times of the stop to the number of times of the variable display of the pattern per unit time as the stop information to the external device. A stop information display means 136 displays the stop information on a screen when stop instruction input is detected in a period during which the patterns are not variably displayed.