Patent ID: 8715080

Claim:
A game system including at least a first game apparatus, a first game controller, and a second game controller, wherein the first game controller is configured to be used by both the first game apparatus and a second game apparatus that is another game apparatus having compatibility with the first game apparatus, and the first game controller comprises: a predetermined operation key; a sensor section; a connection section to which an extended controller is connectable; and a first transmission section that, during execution of a predetermined game process, generates transmission data having a data format including a first data region that contains predetermined header information, a second data region that contains key data indicating the content of operation performed on the operation key, and a third data region that contains first operation data indicating the contents of operations performed on the sensor section and the extended controller, and transmits the transmission data to the first game apparatus by means of wireless communication, and the second game controller comprises: a first operation section including at least a plurality of operation keys; and a second transmission section that, during execution of a predetermined game process, generates transmission data in which the first data region, the second data region, and the third data region are arranged in the same order as in the data format generated by the first transmission section, and predetermined header information is stored in the first data region, second operation data indicating the content of operation performed on the first operation section is stored in the third data region, and the second data region is merely secured as a region, and transmits the transmission data to the first game apparatus by means of wireless communication.