An information processing system includes: area extraction means for extracting an area occupied by a player from the mirror moving picture containing a player; control means for generating a computer image containing a game character; and display control means for causing a display device to display a superimposed moving picture obtained by superimposing the mirror moving picture and the computer image. The control means moves the game character according to the area occupied by the player in the superimposed moving picture. Thus, in the information processing system using the player image acquired by a camera as the input interface, it is possible to improve the game entertainment.