Yu-Gi-Oh! Duel Monsters is a trading card game adaptation for the Game Boy. Based on the popular anime and manga, it allowed players to simulate the card duels through a simplified handheld experience. The game was probably developed to capture the growing popularity of the franchise and offer a portable version of the card game's core mechanics.  The English version is noteworthy for expanding its accessibility to a global audience beyond Japan.  It likely featured a single-player mode against AI opponents and may have included some form of multiplayer functionality. The specific developers and publishers varied between regions.

Yu-Gi-Oh! Duel Monsters (English)

Yossy no Cookie (Japan)