| http://www.w3.org/ns/prov#value | - , based on the number-of-game-media information received from the slot machine, (B) the control device transmitting cumulative-value information based on the cumulative value, to the plurality of slot machines, (c) the slot machine increasing the number of special symbols that can be displayed to a symbol display capable of variably displaying symbols including the special symbol, based on the cum
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