To provide a game parlor system for responding to a request from a game parlor who intends to suppress buying and selling of game media while approving sharing of the game media acquired by a player.

The game parlor system sets an issue permission value (5,000 balls) for a ball of divided issue for divided issue is set and suppresses the divided issue when the issue permission value is exceeded. In this case, held ball sharing among group members that the game parlor permits suppresses divided issue on the basis of a result obtained by comparing balls of divided issue (divided balls - non-G received balls) excluding balls of divided issue (non-G received balls) corresponding to divided issue that satisfies a specifiable issue permission condition (divided held balls among groups) with the issue permission value. Thus, selling and buying of held balls without limiting a shared game is stopped.