A method of mounting a game for a localization system including a portable storage device and a game console includes steps of searching for a targeted word unit in the portable storage device and game information in a small database of the portable storage device after the game console is connected with the portable storage device. When any cover information or setup-file information corresponds to a correspondence code in the small database, the cover information or setup-file information are returned to the application-program menu and displayed on a screen. Next, a game can be performed to read a first file, including a game main program, in the portable storage device.