[[Spanish release date::| ]][[Spanish Sneak Peek date::| ]] Extra Pack 2017 is an Extra Pack in the Yu-Gi-Oh! Official Card Game. It introduces previously TCG-exclusive cards to the OCG. The Korean first print run of this set had a text error in both the boxes and packs; it stated that "All Ultra Rare cards are also available as Secret Rares" (※ 울트라 레어 카드는 시크릿 레어 카드의 사양으로도 존재합니다). This error has been removed from following printings, making it a 1st print-only mistake. The error was only in the text and no actual rarity-missprinted cards were made.