The present invention relates to a bicycle-type game simulation device comprising: a crank pedal unit; a swing footrest horizontally rotatably installed in the crank pedal unit; a swing detection means which detects a left-and-right rotation of the swing footrest and transmits a signal thereof; and a forward-and-backward rotation detection means which detects a forward/reverse rotation of a crank shaft and transmits a signal thereof, wherein a user can easily operate a behavioral motion of a player in a game with his/her foot, using the mechanism of a crank pedal of a bicycle, so that the user can perceive a good sense of reality.