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Yu-Gi-Oh! (遊☆戯☆王, Yūgiō, lit. King of Games) is a 1998 Japanese anime television series produced by Toei Animation and Bandai based on the manga of the same name written by Kazuki Takahashi. The series aired on TV Asahi between April 4, 1998 and October 10, 1998. An animated film based on the series was released in Japanese theatres on March 6, 1999. The opening theme is "Kawaita Sakebi" (渇いた叫び, Thirsty Cry) by Field of View whilst the ending theme is "Ashita Moshi Kimi ga Kowaretemo" (明日もし君が壊れても, Even If You Break Tomorrow) by Wands. The series was followed by a different adaptation produced by Nihon Ad Systems and Konami, Yu-Gi-Oh! Duel Monsters, which began airing in 2000.
Adapting the first seven volumes of the manga series, whilst also introducing some original storylines, the story follows a boy named Yugi Mutou, who is timid and often bullied. One day, he manages to solve a mysterious item known as the Millennium Puzzle, said to grant a wish to whomever solves it. Upon completing the puzzle, however, Yugi is possessed by a spirit residing in the puzzle, known only as 'Dark Yugi'. From that day forth, whenever someone with a dark heart threatens Yugi's friends, Yugi becomes Dark Yugi and challenges these people to Shadow Games, games of incredible risk that reveal a person's true nature.
The series' main character, a timid boy who likes to play games. One day, he solves the Millennium Puzzle and inhabits the spirit residing it. Whenever someone cruelly mistreats his friends, this 'Other Yugi' takes over and challenges them to a Shadow Game, life threatening games that reveal a person's true nature. For those who fail his Shadow Games, Dark Yugi punishes them with a penalty game.
Yugi's friend. He used to pick on Yugi for always playing games by himself, but after Yugi risks himself to protect him from a bigger bully, Jounochi befriends him.
Yugi and Jonouchi's friend who is head of the beautician department (or simply the janitor.) He has a crush on Miho Nosaka, but can never seem to win her heart.
Another one of Yugi's friends and Miho's best friend. After being first saved by Dark Yugi, she becomes interested in this side of Yugi and will occasionally put herself in danger in order to bring him out.
A one-shot character in the manga, she is more featured in this series. Miho is Anzu's best friend. Although Honda is in love with her, she herself seems to get a crush on Bakura. She is very kind and caring and will always stand up for her friends.
President of Kaiba Corporation and the producer of games. After first facing Yugi in a Shadow Game of Duel Monsters, in which he brought the game's monsters to life, Kaiba becomes inspired to build a holographic system to replicate that feel. He constructs the deadly theme park, Death-T, to test Yugi and his friends. Unlike other media in which he is depicted, Seto is shown with green coloured hair in this adaptation.
A transfer student with an interest in role playing games. He wears the Millennium Ring, which also possesses a Dark Spirit, who has the power to trap people's souls into Bakura's games.
An Egyptian man who possesses the Millennium Key, used to see into people's minds, and the Millennium Scales, which weighs a person's sins. When he becomes aware of Yugi's possession of the Millennium Puzzle, Shadi puts Yugi's other self through a series of tests to see if he is worthy.