PURPOSE: To enable discrimination and judgement between a normal bonanza and a continuous prize winning bonanza and to simplify data collection by means of continuous prize winning bonanza information.

CONSTITUTION: A pachinko game machine 1 is provided with a continuous bonanza condition deciding means for deciding that the bonanza condition is continuously generated with in a designated period of time. The continuous bonanza condition deciding means is, for example, integrated into a honor prize port control circuit board 107 and includes CPU so as to decide the generation of a continuous prize winning bonanza, whereby a normal bonanza and a continuous prize winning bonanza are discriminated from each other. Thus, the generation of a continuous prize winning bonanza condition is judged in a simple constitution and the data collection by using continuous prize winning bonanza information is simply conducted.