Yu-Gi-Oh! World Championship 2008 is a card battling game for the Nintendo DS released in 2007. It's part of the long-running Yu-Gi-Oh! series, where players take the role of a duelist, building decks with an expansive array of trading cards featuring various monsters, spells, and traps to defeat opponents. The game includes numerous cards from the Yu-Gi-Oh! universe and allows players to duel against characters from the franchise or engage in battles with others via local wireless or online play.