Yu-Gi-Oh! Wiki
Yu-Gi-Oh! Wiki
Main Deck

A Main Deck in the anime
A Main Deck in the anime

Japanese (ruby)


Japanese (romanized)

(Mein no) Dekki


(Main) Deck

The Main Deck (Japanese: メインのデッキ Mein no Dekki), usually simply referred to as the Deck (デッキ Dekki), is a pile of cards that a Duelist can draw from. Each Duelist uses their own Main Deck in a Duel.


When constructing a Deck, Monster, Spell and Trap Cards are placed in the Main Deck. Fusion, Synchro, Xyz and Link Monsters are placed in the Extra Deck. If a player uses official Monster Token or Counter cards, these are to be stored in a separate location as well.

When a Duel begins, the Main Deck is placed face-down in the Deck Zone of the field. All cards in the Main Deck must remain face-down during the Duel, and neither player may view the contents of either player's Deck unless a card effect allows them to, after which the Deck must be shuffled.

Even if a card in the Deck is face-up, it cannot be looked at by either player unless it is on top of the Deck, in which case it is public knowledge.

Main Deck construction restrictions

Constructed Deck formation for Normal Duel

Speed Deck formation for Speed Duel

  • The Main Deck must be constructed using only card product provided at the event.
  • The Main Deck can have a minimum of 20 cards. (Monsters, Spells, & Traps) There is maximum of 30 Cards.
  • The Extra Deck can have a minimum of 5 Fusion, Synchro, Xyz, and/or Link Monsters
  • A Duelist may include 1 to 3 copies of any card they like.