Yu-Gi-Oh! Duel Monsters is a popular Japanese anime series based on the manga by Kazuki Takahashi. The story follows Yugi Mutou, a boy who solves an ancient puzzle and awakens a mysterious spirit. The series focuses on strategic card duels, magical artifacts, and friendship. Its success spawned numerous sequels and spin-offs, including Yu-Gi-Oh! GX, which expands the universe with new characters and stories.