Quick answer
CardSpicy takes a card game’s structure from the publisher rather than from how a marketplace files it, and Konami publishes Yu-Gi-Oh! as two separate environments that share a rulebook and little else. The OCG and the TCG share the summoning methods, the card anatomy and the rarity ladder, but they do not share a card pool, and they do not share a list of what is legal — each keeps its own Forbidden & Limited List.
Whether a card exists, is legal, or counts as recent is a per-environment fact in Yu-Gi-Oh!, and that is why this split deserves a page of its own.
Most card games have one card pool and one set of rules, and regional differences are a matter of language and release timing. Yu-Gi-Oh! does not work that way. It is published as two environments that share a rulebook and little else.
The two environments
The OCG and the TCG are separate branches of the same game. They share the structure described in the Yu-Gi-Oh! card index — the summoning methods, the card anatomy, the rarity ladder — but they do not share a card pool, and they do not share a list of what is legal.
What that means in practice
| Question | Why it has two answers |
|---|---|
| Is this card legal? | The OCG and the TCG keep separate Forbidden & Limited Lists, so the same name can be restricted in one environment and unrestricted in the other. |
| Does this card exist? | Some names are released in one environment before the other, and a few have never crossed over at all. A card’s existence is a per-environment fact. |
| Is this card recent? | The two environments do not receive releases on the same dates, so “new” differs between them. |
| Can I use it in a world-level event? | Events that draw from both environments generally require a card to have been released in both before a cut-off, so a card legal at home may not be eligible there. |
Language is a different question again
It is tempting to treat language as a stand-in for environment, and it mostly is not. A card’s language tells you where it was printed for, and an environment tells you which pool of cards and which list apply. Keeping the two apart is what stops a language question from being answered with the wrong list.
The Simplified Chinese edition sits inside one of them
Konami publishes an official Simplified Chinese edition, and it belongs to the OCG rather than forming a third game. It is an official tournament format in mainland China rather than a translation overlay: the cards carry Simplified Chinese text and effects on the card face, and the publisher’s own card database is published in Simplified Chinese as well. The Simplified Chinese event environment has also been given its own Forbidden & Limited List alongside the wider OCG list.
Why an index has to care
Because a card is catalogued by release, and a release belongs to an environment. Two copies of the same name can carry different legal status, and a name can be a real card in one environment while being something you will never see in the other. The Forbidden & Limited List article covers what the list does with those names.
What this page does not claim
No prices, and no card counts. We have not yet run a checked pull of graded sales for Yu-Gi-Oh!, and the two-environment structure means a single global number would be misleading even if we had.
Frequently asked questions
What do OCG and TCG stand for?
They are the two environments of the Yu-Gi-Oh! card game. Each has its own card pool and its own Forbidden & Limited List, so a card can be legal in one and restricted or absent in the other.
Is the Simplified Chinese edition a separate game?
No. It is an official edition published by Konami and it belongs to the OCG. Its event environment has been given its own Forbidden & Limited List alongside the wider OCG list.
Can I use a card from one environment in the other?
Only if it exists in that environment’s card pool and is not restricted there. Existence and legality are both per-environment questions.
Why are the two lists different?
Because the two environments have different card pools and different play patterns, so they are balanced separately. A restriction in one is not automatically a restriction in the other.
Does language decide which list applies?
Language and environment are separate questions. Which environment a card belongs to is what decides the list, not the language of the printing.
Sources
Sources and further reading
- Konami — the Yu-Gi-Oh! TRADING CARD GAME official card database (Yu-Gi-Oh! Neuron): the card search, the set list and the Forbidden & Limited List. The database is published in Japanese, English and Simplified Chinese.
- Konami — the official Yu-Gi-Oh! TCG rulebook: the parts printed on a card, deck construction by card name, and the current Forbidden & Limited List.
- Card names, attributes, types and printed ATK/DEF values are taken from the publisher’s own database rather than from third-party price guides.
- This page was compiled 2026-10-06. Where the publisher’s database does not define something, this page says nothing about it.
Card names, attributes, types and printed ATK/DEF values are quoted from Konami’s own card database at the date cited and are subject to change. This page is identification and structure, not valuation: we publish no price for Yu-Gi-Oh! cards, because we have not yet run a checked pull of graded sales for the game.
Related reading
- The Yu-Gi-Oh! card index — the eight summoning methods
- The Forbidden & Limited List, explained
- The cards collectors know first
Where to go next
- The CardSpicy card index — every card we track, with its PSA 10 population and market history (195 cards).
- The illustrator index — every artist behind those cards, card by card (110 artists).
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