To provide a game machine, even when processing to be executed in a main board is added, capable of suppressing oppression of the capacity of main storage means for storing a game program for the processing.

A main board 21 generates a random number for every one game. The random number is processed by executing an ART (Assist Replay Time) lottery program P2 stored in ROM 32, namely, the ART lottery using the random number is executed and a result thereof is output. Further, a random number for use in the ART lottery program P2 is transmitted from the main board 21 to a sub board 22 for every one game. ROM 42 of the sub board 22 stores an ART lottery program P5 that outputs, for the same random number, a same result to that of the ART lottery program P2. The sub board 22 executes the ART lottery program P5 stored in the ROM 42 using the random number received from the main board 21 and outputs the result.