This product is a Yu-Gi-Oh! Duel Monsters 4: Jounouchi Deck game cartridge for the Nintendo Game Boy. It is specifically designed for NTSC-J region consoles, making it compatible with Japanese Game Boy systems. Published by Nintendo, this Yu-Gi-Oh! game offers players the chance to engage in exciting card duels featuring characters from the popular anime and manga series. Sold by GB Revival Ltd, this cartridge is a must-have for fans of the Yu-Gi-Oh! franchise looking to experience the challenge and excitement of strategic card battles on their Game Boy device.