The invention discloses a game machine which is used for playing a game through specified operation by a player. The game machine comprises a main control substrate 101, a game display device and a game display control substrate 102, wherein the main control substrate 101 comprises a lottery device which is used for drawing a lottery under the condition that specified conditions are met, and the main control substrate 101 carries out control related to the progress of the game; the game display device executes game display related to the game; the game display control substrate 102 controls the game display executed in the game display device based on information from the main control substrate; and the main control substrate 101 is provided with an information transmission device which transmits the information to the game display control substrate 102 in a one-way mode.