PROBLEM TO BE SOLVED: To perform a shift to stored balls conforming to needs of a game parlor and a game player when approving lending of a game medium at a plurality of lending rates, and approving each of the stored balls of the game medium lent at each lending rate.;SOLUTION: A stored ball management part 55a of a stored ball managing device 50 manages the number of stored balls of each game player using a stored ball management table 54a for managing a 4-yen stored ball account and a 1-yen stored ball account in association with a member card ID. A transfer processing part 55b performs stored ball transfer processing between stored ball accounts in the stored ball management table 54a on condition of conformation to a transfer rule when receiving a transfer request signal from a POS terminal 40 arranged inside a game parlor.;COPYRIGHT: (C)2016,JPO&INPIT
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