A first game image of a displayed region of a game space which contains all player characters is created, and a second image is created by zooming in, when a player has performed a specific operation on an operation means, on a surrounding region of a player character controlled by the player. When the specific operation of the operation means has not been performed by any player, the first image is output as a game image, and when the specific operation of the operation means has been performed, the second image is superimposed on the first image as an output game image.