Abstract: A simulator for presenting a simulation movement on a display correspondingly to a movement of an operator. The operator rides on a support plate and the support plate can be turned about a vertical axis line and can be tilted about a horizontal axis line. The support plate is equipped with a first reactive force applying device and a second reactive force applying device. The first reactive force applying device holds the support plate in a natural state in a neutral position with respect to the vertical axis line and applies reactive force to the support plate when the support plate turns from the neutral position. The second reactive force applying device holds the support plate in a natural state in a neutral position with respect to the horizontal axis line and applies reactive force to the support plate when the support plate tilts from the neutral positions.