The Egyptian Go cards, known in Japan as the Three Phantom Gods (三幻神, Sangenshin?), are a series of cards in Yu-Gi-Oh! that serve as a focal point in the series' manga, the second series anime, and video games based on the anime and manga. Introduced as the strongest of all Duel Monsters, the cards have heavy ties to the fictional history of Ancient Egypt within the series and become central plot devices. The cards inspire events in various spin-offs of the series as well and have inspired the creation other cards directly based on them. The real versions of the cards have become widely hunted collector's items, but are not legally playable in any sort of official tournament.