PURPOSE: To surely detect the operating status of a PACHINKO (Japanese pinball game) machine put in the end state by generating an annunciation of abnormality when operation detecting means becomes a detecting condition under then end condition.

CONSTITUTION: A centralized control computer 14 receives count signals P1, P2 from the respective counters 4, 5 and a signal from a tank switch 2a, and conducts operation and storage for a 'safe' ball number, an 'out' ball number, a differential ball number end frequency and a coming-out ball number on each PACHINKO (Japanese pinball game) machine 1. Further the centralized control computer 14 obtains the operation data showing the operation status of each PACHINKO machine 1 according to input of an operation detecting signal P3 from an angle sensor 13 provided on each PACHINKO machine 1. When an operation detecting signal P3 is given, a warning announcement including a machine number of the PACHINKO machine 1 is generated through a speaker 19.