PURPOSE: To provide a three-dimensional simulator apparatus for forming a three-dimensional imaginary space in which a predeterminedly movable body moves on a course having a predetermined width and enabling the course to be simply set on the basis of simple course information.

CONSTITUTION: Reference points are set along a course having a predetermined width set in an imaginary three-dimensional space at a predetermined interval according to a predetermined address. In a course information storing section 110 are stored address information of the reference point, two-dimensional position information, travelling area setting information, if necessary, height information or the like as course information. In a shift information setting section 112 is selected the reference point according to the shift of the movable body and the shift information of the movable body is set on the basis of the course information of the selected reference point. Thus, a pseudothree- dimensional image is formed in an image composing section 200 on the basis of the set shift information or the like.