A game device (301) includes a connection section (302), a storage section (303), an acquisition section (304), and a control section (305). The connection section (302) can communicably connect with a controller for transmitting state information specifying the current pedal position and a stepping pressure and receiving instruction information specifying the repulsive force of the pedal. The storage section (303) stores in advance the time change information on the pedal position and the stepping pressure correlated with the game situation. The acquisition section (304) acquires the time change information stored in advance while correlated with the current game situation. The control section (305) calculates the force to be applied to the pedal so as to reduce the differences between the pedal position and stepping pressure specified in the time change information acquired and the current pedal position and stepping pressure specified in the situation information received from the controller connected and transmits the instruction information specifying the calculated force as a pedal repulsive force to the controller via the connection section.