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Yu-Gi-Oh! Trading Card Game.
Yu-Gi-Oh! Official Card Game is the version of the Yu-Gi-Oh! card game manufactured by Konami. It is played mainly in Japan and parts of Asia. The OCG used to be printed exclusively in Japanese, Korean and Chinese; starting with Starter Deck 2014, it is now available in an official Chinese set. It has previously been printed in English (referred to as Asian-English). Despite being part of the OCG, Asian-English cards have "Yu-Gi-Oh! Trading Card Game" printed on their backings, though with a different logo. In the past there have been 3 different Chinese prints of cards, including two "Blue-Eyes White Dragons" and a "Dark Magician". Starting from Starter Deck 2014 and onward, Chinese cards have once again started to be printed and will now follow a regular release schedule.
TCG cards are not legal in OCG tournaments. Due to Japanese, Asian-English and Korean cards having different backings, if a player chooses to use a mixture, they must use protective sleeves that cover the back of the cards.
OCG tournaments are divided into three classes: Expert, which has no age restriction, Regular: for secondary school students and Challenge, for primary school students.