To solve the problem that luck decides the number of times of continuation of probability variation which is important for player's profits and the technique of a player is not needed for continuing a probability variable state for a long time.

The pachinko game machine is capable of variably displaying two kinds of special patterns which are a first special pattern 192 and a second special pattern 193. A reporting timing decision means decides a reporting timing on the basis of the result of comparing the residual variation time of the first special pattern 192 and the longest variation time, average variation time and shortest variation time of the second special pattern 193 when first drawing is won in the probability variable state and the stop form of the first special pattern 192 is a form corresponding to a shift to a normal drawing probability state. A reporting means performs reporting at the timing decided by the reporting timing decision means.