A boy named Yugi Mutou solves the Millennium Puzzle which turns in into the "King of Games".

A criminal escapes from jail and takes Anzu as a prisoner. Yugi shows his other self by using the Millennium Puzzle as he challenges the criminal to a Shadow Game in order to get Anzu back.

A man from ancient Egyptian comes at the museum where he sees Yugi with the Millennium Puzzle. He travels in Yugi's mind to see if the puzzle really belongs to Yugi. In there, Dark Yugi challenges him to a game where the man from Egypt must find the real door which has the Millennium Puzzle in it. In the end, the man from Egypt loses and he tells Dark Yugi that he really is the owner of the Millennium Puzzle.

Shadi, the man from Egypt, challenges Yugi to a Shadow Game, with Anzu's life as the prize.

The gang is concerned and confused when they see Jonouchi with a gang wielding yo-yos as weapons. Has he turned his back on his friends?

Game show champion Ryuichi Fuha (Kaiba's second Game Master) moves to the gang's high school. Although he seems friendly, Ryuichi's tactics for arousing Dark Yugi soon turn dangerous...

A new girl named Risa Kageyama wants to become Yugi's girlfriend (much to Anzu's anger). But Risa is actually intent on obtaining Yugi's rare Violet Hectate card.

Yugi befriends bullied youth Imori, and the two discover the forbidden game Dragon Block. The evil game overcomes Imori and he challenges Dark Yugi to a game with his soul itself on the line.

Kaiba's butler Daimon, an old man kept alive through machinery, duels Dark Yugi as the final Game Master. In the process, he reveals how Kaiba used to be, and implores Yugi to restore his kindness.

With Honda seemingly dead, an enraged Dark Yugi battles Mokuba, Kaiba's little brother, in Capsule Monster Chess.

With his grandpa and friends at stake, Yugi duels Kaiba, and his three Blue-Eyes White Dragons, while Jonouchi and Miho battle Ryuchi and Aileen. With his friends' support, Yugi pulls off the unbeatable combo--Exodia.

Yami Yugi aids the others, reduced to figurines, against Dark Bakura and his RPG's boss, Dark Master Zorc.

Even when seemingly defeated, Zorc rises again and threatens to overwhelm the gang. It is up to Bakura to defeat his evil counterpart.