This set is the Deluxe Edition of the Game Boy Advance game Yu-Gi-Oh! Duel Monsters Expert 2006, released only in Japan on February 23, 2006. In addition to the game, this set contained 1x Structure Deck: Warrior's Triumph, 1x Structure Deck: Spellcaster's Judgment, 1x "Yu-Gi-Oh! Online Installation CD" + 1x "Duelpass Phase 3" and 4 Ultimate Rare cards.
Japanese promotional poster
W6S-JP001 - Red-Eyes Darkness Dragon (UtR)
W6S-JP002 - Vampire Genesis (UtR)
W6S-JP003 - Infernal Flame Emperor (UtR)
W6S-JP004 - Ocean Dragon Lord - Neo-Daedalus (UtR)