Yu-Gi-Oh! World Championship, originally called Yu-Gi-Oh! World Championship Tournament, is a series of games for the Game Boy Advance and the Nintendo DS, released yearly between 2004 and 2011, which started as a combination of the Japanese Duel Monsters, Duel Monsters International, and Duel Monsters Expert video game series. The games in this series have been used in tournament events at each World Championship since 2004.