Changes
I felt this should be addressed as this is the main age demographic Konami intended the OCG for. But the “secondary school” had to be chnaged because “secondary school” includes both junior high and high school. And going by Japan’s standards...
''TCG'' cards are not legal in ''OCG'' tournaments. Due to Japanese, Asian-English and Korean cards having different [[Card backing|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 high school students and Challenge, for secondary junior high school school students. The age range difference between the OCG and TCG is that the OCG is stated to be for ages 12 and up as mentioned on the back of every booster pack, starter deck, structure deck and special sets, implying the game mainly targets early teen players. Opposed from the TCG stating for ages 6 and up.
