Changes

On the opening day, while Yugi and his friends are watching a Duel between [[Yu-Gi-Oh! anime, manga or movie only characters#Rick|Rick]] and a CPU opponent, a hacker traps all the duelists and spectators inside the makeshift electronic stadium. The CPU opponent level has been altered to its highest of difficulty, and the only way for everyone to escape is to defeat the CPU in a Duel. Rick had mostly [[Dragon]]-[[Type]] [[Normal Monsters]] and almost no [[Spell Cards|Magic]] or [[Trap Cards]] in his Deck. Yugi transforms into Yami and takes over, using "[[Heart of the Underdog]]"—a card Yugi had given Rick—and combined it with the effects of "[[Spirit Ryu]]" to win and free everyone.

Yami faced [[Leon von Schroeder]], who assumed the alias Leon Wilson, in the finals. Leon acted differently during the Title Bout and Yugi discovered that Leon only wanted to duel and defeat him to earn the respect of his family that [[Zigfried von Schroeder|Zigfried]] couldn't earn in his youth. Leon played an illegal card, "[[Golden Castle of Stromberg]]", that forced Yugi to discard half the cards in his Deck with every passing turn that Leon took and also infected a virus into the KaibaCorp computer system. Yami figures out a weakness in the card; He couldn't discard half the Cards in his Deck, having only 1 card left. He was able to destroy it and nullify the virus. With "Golden Castle of Stromberg" defeated, Yugi continued the Duel and played several Magic and Trap Cards before striking the final blow using "[[Dark Magician]]", "[[Necromancy]]", and "[[Diffusion Wave-Motion]]" to win.