Game system and gaming management method

A game system includes gaming machines and a server that is connected thereto. The server includes an award determination unit that determines, based on sales information of the gaming machines in a first predetermined time period, an award of the amount of the game medium to be paid out from the gaming machines in a second predetermined time period that is later than the first predetermined time period. Each of the gaming machines includes: a payout determination unit that determines to pay out an amount of game medium in accordance with a result of the game; a communication unit that communicates with the server to transmit a request for information concerning the award and to receive the information concerning the award; and a gaming media payout unit that pays out the amount of the game medium corresponding to the award at a predetermined timing.