An entertainment system 10 has: a depth computing module 210 which computes a viewpoint distance from viewpoint coordinate to an object; a scaling computing module 208 which computes scaling for a unique size of the object based on the viewpoint distance; a model transforming module 206 which multiples the unique size of the object by the scaling, computes the size of the object, and arranges the object in the computed size; a view transforming module 214 which transforms the arranged object to a viewpoint coordinate system; a perspective transformation module 216 which perspective transforms the transformed object to a screen coordinate system relative to an origin point of the viewpoint coordinate system; and an image output module 218 which displays a part of the screen coordinate system where the object has been perspective transformed on a display 12, the system can properly display an object separated from the viewpoint coordinate by a predetermined distance.