Competition game system and game apparatus

A competition game system designed such that tactical data created based on respective results of input operations to manual operation sections of two game apparatuses are transmitted and received between the game apparatuses to allow a competition game having an identical event to be progressed in each of the game apparatuses based on the transmitted and received tactical data. Each of the game apparatuses comprises an action-setting section adapted to create player-side tactical data corresponding to a content of an input operation from the manual operation section A, a communication control section adapted to transmit the player-side tactical data created by the action-setting section , to the opponent's game apparatus, and receive opponent-side tactical data from the opponent's game apparatus, through a communication section , a determination section adapted to determine a competition result, based on the player-side and opponent-side tactical data, and an image display control section adapted to display a game image onto a display unit according to the determined competition result. The competition game system of the present invention makes it possible to efficiently achieve a competition game while exchanging minimum data between a plurality of game apparatuses having the same configuration, without setting a master-servant relationship to the game apparatuses.