To surely prevent a situation that sales and a profit on a game place side are compressed even when convenience on a playing customer side is improved by making game media tentatively counted by a counting means selectively releasable on the same day.

When the acquired PACHINKO (Japanese pinball game) balls of a playing customer are counted by a ball counter 21, the counting data are stored respectively in a counting memory 22a and a ball storage memory 22b in the state of being divided into the counting data and stored ball number data corresponding to the corresponding state of a game machine. A ball lending machine 8 can release the PACHINKO balls for a number within the range of the stored data of the counting memory 22a and the ball storage memory 22b through a releasing mechanism 18. A control part 22 reduces a rare number taking precedence over the stored ball number data when the releasing operation of the PACHINKO balls through the releasing mechanism 18 is performed and executes a discount processing for performing control so as to make the reduction number be more than the number of the PACHINKO balls to be released by a prescribed ratio at the time of reducing the stored ball number data.