A game system includes a plurality of game machines each of which has an LCD. A game world in which a plurality of characters individually operated by the plurality of game machines appear is displayed on a CRT as a common display and on the LCD as an individual display of each of players. Specifically, a game world having a fixed viewpoint capable of viewing the plurality of characters is displayed on the CRT, and a three-dimensional game world having a viewpoint with reference to one's character is displayed on the LCD. One of the CRT or one's LCD is changeably selected as an operation screen. When a direction instructing key is operated, a moving direction of one's character is determined with reference to the operation screen, and one's character is moved to the determined moving direction.