To increase the game property owned by games regarding dungeons more than conventional games have by preparing a dungeon (labyrinth-like structure) from digital information such as information obtained by reading bar codes, and to maintain the interest of a player by preparing course information by utilizing first-dimensional bar codes or second-dimensional bar codes which can daily be found at any place.

The game system for processing information by operation is equipped with: an inputting means; a controlling means; a displaying means or an outputting means; and a storage means. The game system regarding dungeons is also equipped with: an information inputting means for reading bar code information or the like; an information storage means for storing the bar code information or the like; a processing means for converting the bar code information or the like into dungeon information; the displaying means or the outputting means for outputting the dungeon information on a screen; an operating means for performing the game regarding the dungeon based on the displayed dungeon information; and the storage means for storing the result of the game.