Patent ID: 8308563

Claim:
A game system, comprising: a first handheld controller configured to be supported in free space by a first hand of a user; a second handheld controller configured to be supported in free space by a second hand of the user; and a game apparatus for executing a predetermined game program to cause a display device to display, on a display area, one of a two-dimensional virtual game world and a three-dimensional virtual game world, wherein the first controller includes a first operation data generation section for generating first operation data relating to an orientation of the first controller and an input operation performed by a player; the second controller includes a second operation data generation section for generating second operation data relating to an orientation of the second controller and an input operation performed by a player, the first controller includes an acceleration sensor that generates acceleration data relating to an orientation of the first controller and an image pickup section that captures images that include plural infrared markers and that generates coordinate related information based on the infrared markers that is also related to an orientation of the first controller, the second controller transmits the second operation data to the first controller; and the game apparatus includes a game processing unit that obtains the first operation data and the second operation data from the first controller and that subjects the virtual game world to a predetermined game process in accordance with a change in the data relating to an orientation of one of the first and second controllers, as reflected in the obtained operation data, and a display processing unit that causes the display device to display, on the display area, an image of the virtual game world having been subjected to the game process.