A first gaming machine for transmitting/receiving data to/from a server, comprising: a specification value setting device for setting at least one specification value as a control condition for game control; a transmitting device for transmitting data of a game result to the server; a gaming machine determining device for determining a second gaming machine operated by a co-player; a total result data receiving device for receiving from the server data of a total game result achieved by the first gaming machine and the second gaming machine based on the data of the game result transmitted by the transmitting device; a specification value determining device for determining a specification value based on the data of the total game result received by the total result data receiving device; and a specification value renewing device for renewing to replace the specification value set by the specification value setting device with the specification value determined by the specification value determining device. view more