Yu-Gi-Oh! Duel Monsters

The story follows Yugi Muto, a boy who completed an ancient Egyptian artifact known as the Millennium Puzzle, which led to him to inherit an alter-ego spirit. After defeating his rival, Seto Kaiba, in a game of Duel Monsters, Yugi is approached by Maximillion Pegasus, the creator of Duel Monsters, who uses the power of another Millennium Item, the Millennium Eye, to kidnap the soul of Yugi's grandfather. Joined by his friends Joey Wheeler (Katsuya Jonouchi), Tristan Taylor (Hiroto Honda), and Téa Gardner (Anzu Mazaki), Yugi enters Pegasus' Duelist Kingdom tournament in order to defeat Pegasus and free his grandfather's soul.

Yugi learns that the spirit dwelling within him is a nameless Pharaoh from ancient Egyptian times, who doesn't remember anything of his past. Yugi enters Kaiba's Battle City tournament in order to obtain the three Egyptian God cards needed to unveil the Pharaoh's past. Along the way, Yugi encounters more Millennium Item wielders, including Marik Ishtar, the wielder of the Millennium Rod, and his elder sister Izhizu Ishtar who possesses the prophesying Millennium Necklace.

The first twenty-four episodes of the season form an original story arc that sees Yugi and his friends get sucked into a virtual world run by Noah, the legitimate son of Kaiba's adoptive father, Gozaburo. After returning to the real world, the finals of the Battle City tournament commence.

Produced during the time Millennium World was being written, in a new, original story arc, the Orichalcos drains the power from the Egyptian God cards and begins gathering souls in order to revive the ancient dragon, Leviathan. Yugi, Joey and Kaiba are each given a legendary dragon card to fight the Orichalcos and its leader, Dartz.

The final season is equivalent to Millennium World in the manga. However, the first half focuses on anime-original story arcs released during the time the final chapters of the manga were being written.

After the Orichalcos has been eliminated, in another original story arc, Yugi and his friends battle in the KaibaCorp Grand Championship to face off another of Kaiba's rivals, Zigfried. Then, Yugi, his friends, and Solomon travel to India only to be taken to the world of Capsule Monsters.

The latter half of the season sees Ryo Bakura, the owner of the Millennium Ring, overcome by the dark spirit within the Ring. When Yugi and his friends go to Egypt, they find themselves sucked 5,000 years into the past, where Pharaoh must battle Bakura and his evil essence, Zorc the Dark One. After returning to the present day, Yugi and Pharaoh duel each other in the ultimate test.

In July 2009, 4Kids announced plans to release the original, Japanese version of the anime series with subtitles on their YouTube channel. However, In August 2009, these episodes were removed due to legal issues with ADK (NAS' parent company) and Shunsuke Kazama, the Japanese voice of Yugi.[6][7] On July 11, 2015, the Japanese version of the series began streaming on Crunchyroll.[8][9] The news came over a week after an earlier announcement that streaming of subtitled episodes of Yu-Gi-Oh! GX would begin on August 1, 2015.[10]