Game Boy Software: * Soccer Boy * Power Pro GB * Pro Mahjong Kiwami * Crayon Shin-chan 3: Ora no Gokigen Athletic * Detective Conan: Underground Amusement Park Murder Case Initial functionality has been confirmed. However, the backup function has not been tested. Also, the backup battery cannot be guaranteed due to aging. These are old games, so there may be scratches. Please refrain from purchasing if you are concerned about the condition. This item is available for immediate purchase.