To provide a connection device used in portable electronic equipment that is capable of providing to a player pleasure and punch of playing a game, a cartridge and a portable electronic equipment even in a portable game machine whose display screen is small.

A connection device that can be mounted detachably to portable electronic equipment having a display screen in which a plurality of symbols necessary for a game is prepared for three arrays, and symbols of each array are movingly displayed in a fixed direction, an operating section operated by a player to stop the symbols of each array in the display screen, characteristically comprising a display section varying the display in accordance with the arrangement of symbols of each array stopped in the display screen, portable equipment to which the connection device is mounted and a cartridge mounted to the portable equipment.