☆Please read the profile first☆ Used Game Boy software without box or manual. It's "GAME CONVENI 21"! I think this is a rare one, even for a bare cartridge! Due to being a used item, there is some aging. *Everything in the image is included, please check the condition in the image. ☆Tested and working on a Game Boy console☆ I have confirmed that it works, but depending on the compatibility with the console, it may take a few tries to turn the switch on and off, or it may not start at all. Please understand this. ■Battery backup batteries are not guaranteed. ■Please understand that this is a used item, and those who are sensitive to this should refrain from purchasing. A great deal with shipping included♪ For those who like retro games, or those who have a Retro Freak, how about it? We are looking forward to your inquiries (^0^) #GameBoy #GameConveni #GB #RetroGame #Starfish #Variety #MiniGame