Yu-Gi-Oh! Ultimate Masters: World Championship Tournament 2006 is a collectible card game for Game Boy Advance based on the Yu-Gi-Oh! franchise. Players collect cards to build custom decks and engage in duels against computer opponents. Completing Free Duel mode allows players to challenge others with their own designed decks. The game includes three promotional cards: Helios - The Primordial Sun, Helios Duo Megistus, and Golden Homunculus.
Yu-Gi-Oh World Championship Tournament 2006 is a video game based on the Yu-Gi-Oh! franchise. The game play 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 came with three promotional Yu-Gi-Oh! cards enclosed; they were `Helios - The Primordial Sun`, `Helios Duo Megistus`, and `Golden Homunculus`. These cards were later available in English Blister Packs.