Yu-Gi-Oh! (遊☆戯☆王, Yū☆gi☆ō?, lit. "Game King") is a Japanese manga created by Kazuki Takahashi, which has spawned a franchise including multiple anime series, a trading card game, and numerous video games. Most of the incarnations of the franchise involve the card game called Duel Monsters (originally known as Magic & Wizards), wherein each player uses cards in order to defeat one another.

Source: Wikipedia