This is Yu-Gi-Oh! Duel Monsters 4: Battle of the Greatest Duelists for the Game Boy Color. The box and instruction manual are not included, only the game cartridge. The box has been found, as shown in photo 4. It will be shipped via Yu-Packet Post Mini, so there is a possibility it may be slightly crushed. Please be aware of this. Initial functionality has been confirmed. Save data is likely still present, so please delete it before use. Please understand that this item has been stored at home for a long time. Please purchase only if you accept this. Thank you for looking.