A Card Number (Japanese: カードナンバー Kādonanbā) is the code found on most OCG and TCG cards, intended to denote the set from which the card originated, its position in that set, the region the card was printed for, and the language the card was printed in.
On most cards, the Card Number is located immediately underneath the artwork, on the right side. Card numbers on Pendulum Monsters are placed in the bottom left corner of the card instead, in line with the ATK/DEF values, as the Pendulum Effects and the Pendulum Scales take up the space where the card number would usually be placed. On Link Monsters, card numbers are moved slightly left of their normal position to allow room for the bottom-right Link Arrow.
The general format for card numbers is "AAAA-RR###", where "AAAA" is the two- to five-character set prefix, "RR" is the one- or two-letter region code, and "###" is the set position number.
The set prefix is normally four characters (either letters or digits). Normally the first two characters are letters, but there are sets for which this is not the case.
- In Series 2, cards used a two-character prefix.
- In Series 3, cards use three-character prefixes. Some TCG sets have prefixes that differ between languages.
- In Series 4, cards use three-character prefixes. They no longer vary between TCG languages.
- From Series 5 onward, cards use a four-character prefix.
The region code is normally two letters. They were introduced in Series 3, the first series to be released outside of Japan. In Series 3, North American English and Japanese sets do not use region codes, while all other regions use single-digit codes. From Series 4 onward, all regions use two-digit region codes.
The following is a table of the prefixes for each region.
|Region||1-character code||2-character code|
|North American English||none||N/A|
Set position number
The set position number is normally three digits.
For most sets, this is a number that starts at 001, with all numbers up to the highest number corresponding to a card; some sets also include a card numbered 000. Closely related sets that share a prefix, or set with multiple subsets within them (such as Yugi's Legendary Decks), will often replace the first character of the set position number with a letter (different for each set or subset), and number each set or subset separately.
For series of promotional cards, such as magazine promotional cards, instead each new release will use a number one higher than the last promotional card to be released.
Some promotional cards and bonus cards use letters as the first one or two characters to indicate their status as such. (Replacing the first character with "S" is common.) Token Cards will often use TKN as their entire set position number.
Yu-Gi-Oh! Rush Duel
Card numbers are not featured in the anime or manga. Most video games do not feature the OCG/TCG-style card numbers, though almost all of them do number cards sequentially (see Comparison of video game card numbers (by number)).
Bandai's Official Card Game
Card Numbers are used in Bandai's Official Card Game. Almost all Bandai cards only have a number, without any abbreviations or letters.
Yu-Gi-Oh! Dungeon Dice Monsters
Card Numbers are used in Dungeon Dice Monsters.