Yu-Gi-Oh! Duel Monsters
遊☆戯☆王デュエルモンスターズ (original)
Yugi Moto solves an Ancient Egyptian Puzzle and brings forth a dark and powerful alter ego. Whenever he and his friends are threatened by evil in Duel Monster Card Game, this alter ego breaks out to save them.
Watch "Yu-Gi-Oh! Duel Monsters" from streaming services Hulu Plus, Tubi TV released in 2000. It's a animation and action & adventure show, and has a rating of 7.3 out of 10 from Imdb which is usually fine for this kind of show.