Yu-Gi-Oh! Ultimate Masters: World Championship Tournament 2006, known as Yu-Gi-Oh Duel Monsters Expert 2006 「遊戯王デュエルモンスターズ エキスパート2006」 in Japan, and Yu-Gi-Oh World Championship Tournament 2006 in Europe is a video game released in early Summer 2006 based on the Yu-Gi-Oh! franchise. The gameplay involves the player collecting cards in-game and using them to battle the computer players. Players may also (upon completing the Free Duel mode) battle against Decks which they themselves have designed and saved. This game comes with three promotional Yu-Gi-Oh! cards enclosed; they are “Helios – The Primordial Sun”, “Helios Duo Megistus”, and “Golden Homunculus”. These cards were later handed out in English Blister Packs.
This game contains every Yu-Gi-Oh! card made in English at the time of its release, with the exception of “Barrel Behind the Door”, “Darkness Approaches”, “Double Spell”, “Dragon Piper”, “Gravekeeper’s Chief”, “Kaiser Colosseum”, “Mind Crush”, “My Body as a Shield”, “Spring of Rebirth” and Level 5 Normal Monsters other than “Aitsu”, “Bottom Dweller”, “Curse of Dragon”, “Giga Gagagigo”, “Illusionist Faceless Mage”, “Jack’s Knight”, “Kabazauls”, “King of Yamimakai”, “Labyrinth Wall”, “Molten Behemoth”, “Mr. Volcano”, “Ocubeam”, “Steel Ogre Grotto #1”, “Terrorking Salmon”, “The Earl of Demise” and “Woodborg Inpachi”. Unlike previous games, the cards collected from packs have direct correlation to those released for the TCG. Players purchase packs from the original Legend of Blue Eyes White Dragon all the way up through the Shadow of Infinity series. There are also specialized packs focusing on themes (Machines, Spellcasters, Warriors, etc.), and even by card type (all Effect Monsters, all Normal Monsters, all Spells, all Traps). Additional packs are unlocked as you progress in the game. “Elemental Hero Neos” is featured in the game prior to its release.