1. A game system comprising a game apparatus, an operating device, and a hand-held device, wherein the game apparatus includes: a receiver for receiving data transmitted from the operating device and the hand-held device; a game processing system, comprising a processor, for performing a predetermined game control process for a multiplayer game in which a first player uses the operating device while a second player uses the hand-held device; an image generator for generating a first game image of a virtual game space based on a first virtual camera set in the virtual game space, the virtual game space representing a result of the game control process, and for generating a second game image of the game space based on a second virtual camera set in the game space; a first image output section for outputting the first game image to a first display device provided independently of the hand-held device; and a second image output section for outputting the second game image to the hand-held device, the operating device includes: a first operation data output section for outputting first operation data representing manipulation by the first player on the operating device; and a transmitter for transmitting the first operation data to the game apparatus, the hand-held device includes: a second operation data output section for outputting second operation data representing manipulation by the second player on the hand-held device; a transmitter for transmitting the second operation data to the game apparatus; a receiver for receiving the second game image from the game apparatus; and a display processor for displaying the second game image on a second display device provided in the hand-held device, and the game processing system performs, as the game control process for the multiplayer game, control of an attitude of the first virtual camera based on the first operation data in concert with control of a position of the first virtual camera based on the second operation data.