Yu-Gi-Oh! Duel Monsters, a Game Boy game released in 1998. - Brand: KONAMI - Game Title: Yu-Gi-Oh! Duel Monsters - Release Year: 1998 - Console: Game Boy Thank you for viewing. This is the Game Boy Yu-Gi-Oh! Duel Monsters. [Contents] Box Software Software case Inner box Instruction manual Postcard Cards are not included. Although it is a used item, I think it is in good condition overall. Please check the condition in the images. Please consider purchasing with the understanding that this is a used item. To prevent trouble and swapping, we do not accept cancellations, claims, or returns after purchase, so please understand.