GAME SYSTEM, GAME MACHINE, AND MANAGING DEVICE

PROBLEM TO BE SOLVED: To update game information appropriately by preventing fraudulence for acquiring game result information from a plurality of game machines in a short period.SOLUTION: When receiving a simple start update request from a portable terminal, a management server acquires, for each player, time from reception date/time of the simple start update request that updated a player database last time. When time per game based on the total number of games specified from the received update request and acquisition time is less than a set value, the management server determines that it indicates a total number of games not probable within time, and sends back to the portable terminal accordingly without updating the player database based on the received update request.