Patent ID: 8821256

Claim:
A game system comprising: a plurality of gaming machines; a bill identifying device that is associated with each of the gaming machines, for identifying bills of different currencies and an amount of the bills, and outputting data representative of an identified result; a player tracking device that is integrated with each of the gaming machines, for converting data output from the bill identifying device to credit data for executing a game, based on a money exchange rate stored therein, and sending out the converted credit data to the gaming machine; a control device for inputting a money exchange rate, providing the input money exchange rate to the player tracking device, and updating the money exchange rate stored in the player tracking device; and an information card device that is integrated with the player tracking device, for causing an information card to store data equivalent to an amount of money to be awarded to a player according to a game result of the gaming machine, and sending out credit data for executing a game to the gaming machine, based on data equivalent to the read money from the information card, wherein the player tracking device comprises: a card writer for storing information associated with a play result in gaming machine, in at least one information card; a card stacker for stacking a plurality of the information cards; a detection portion for detecting a number of cards that is stacked in the card stacker; a memory for storing the detected number of cards; a light emitting portion for emitting light according to the number of cards; and a controller programmed to execute processing operations of: (A) causing the light emitting portion to emit light in a first mode in a case where the number of cards stored in the memory is equal to or smaller than a predetermined first reference number; and (B) causing the light emitting portion to emit light in a second mode in a case where the number of cards stored in the memory is equal to or more than a predetermined second reference number.