Can I build a deck together with friends on TCGSwap?

Yes. Every deck on TCGSwap has a Collaboration Space. You can invite up to 5 friends; they can suggest card changes, discuss ideas, and playtest proposals. You review and apply suggestions before anything changes in your deck.

How does deck collaboration work?

It works like a pull request for your deck. Collaborators open the deck editor, make their proposed changes, and submit a suggestion with a note. You get notified, open the comparison view to see exactly what they changed, and choose to apply all, cherry-pick individual cards, or decline. Nothing changes in your deck until you approve it.

Can collaborators chat and discuss the deck?

Yes. The Collaboration Space has a shared group discussion thread for the whole deck, plus a per-suggestion Q&A thread for each proposal. You can @mention teammates and link specific cards inline.

Is collaborative deck building free?

Yes, collaboration is free for all TCGSwap users during beta. You can invite up to 5 collaborators per deck.

Does TCGSwap work for MTG, Pokémon, Yu-Gi-Oh and One Piece collaboration?

Yes. The Collaboration Space supports all four games — Magic: The Gathering, Pokémon TCG, Yu-Gi-Oh and One Piece. Format validation and card prices are included for each game.

All guides · 2026-09-28 · TCGSwap

Yu-Gi-Oh deck rules: Main, Extra and Side Deck

A Yu-Gi-Oh deck has three parts, each with its own limits.

The three zones

Zone	Size	What goes in it
Main Deck	40–60 cards	Normal, Effect and Ritual monsters, ordinary Pendulum monsters, all Spells and Traps
Extra Deck	up to 15	Fusion, Synchro, Xyz and Link monsters, including Pendulum versions of those
Side Deck	up to 15	Cards you can swap in between games

Forty is the sweet spot for the Main Deck: every card above 40 lowers your chance of drawing your key cards.

Copies and the banlist

At most 3 copies of a card by name, counted across all three zones.
Limited cards: 1 copy. Semi-Limited: 2.
Forbidden cards can't be used in Advanced.

Formats

Advanced — the standard tournament format, using the current TCG Forbidden & Limited list.
Traditional — Forbidden cards are allowed at 1 copy instead of banned.
Goat / Custom — casual, unrestricted building.

How TCGSwap handles it

The deck builder sorts every card into the right zone by its type, so a deck can't end up with a monster in the wrong place. It flags size, copy and banlist problems but never blocks saving a deck in progress.

Stats shows your Monster / Spell / Trap split, attribute and level distributions, and the probability of drawing at least one of your key cards in your opening five.

Bringing a deck from a simulator? See how to import a .ydk file. For the official rules and the current list, see Konami's Yu-Gi-Oh! TCG Rulebook and Forbidden & Limited List.