INFORMATION TRANSMISSION SYSTEM, AND GAME MACHINE AND GAME SYSTEM HAVING INFORMATION TRANSMISSION SYSTEM

PROBLEM TO BE SOLVED: To provide an information transmission system with enhanced security by transmitting information using a plurality of communication paths, and to provide a game machine and a game system.SOLUTION: The information transmission system 700 transmits a control command as predetermined information, from a main control board 100 as a transmission part to a performance control board 300 as a receiving part. The information transmission system 700 includes: a communication means 740 having a plurality of communication paths 741, 742 connecting the main control board 100 to the performance control board 300, at least two of the communication paths comprising different types of communication mediums; an I/F circuit 105 as a first transmission means, which encrypts the control command by using decryption information of the number of communication paths and transmits a pair of the encryption information and the decryption information to the communication paths 741, 742; and an I/F circuit 350 as a second transmission means, which detects an abnormal condition by receiving the information and decrypting and comparing them.