An impact simulation apparatus is provided which allows a player to feel an impact simulation according to an impact image on a monitor screen. This apparatus includes: a seat belt as a body fixing member which fastens the player; an impact simulation giving portion which gives an impact to the player by straining this seat belt and has a winding drum, a belt pressing member, a driving motor, and the like; and a control unit which outputs, to the driving motor, a control signal for giving an impact when a simulated vehicle bumps on a predetermined condition, so that the seat belt can be slackened and strained.