An Extra Link (Japanese: エクストラリンク, Ekusutora Rinku) is a series of co-linked Link Monsters that connects one Extra Monster Zone to the other. The monsters that make up the Extra Link are considered to be Extra Linked; additionally, any monster co-linked to an Extra Linked monster is also Extra Linked. An Extra Link is formed regardless of which player controls the monsters, including the monsters in the Extra Monster Zones.
Using an Extra Link to control both Extra Monster Zones
If Link Summoning a Link Monster in an Extra Monster Zone would create an Extra Link, the player can do so even if they already control a monster in the other Extra Monster Zone; this is the only way for a player to control monsters in both Extra Monster Zones simultaneously.
The following are the cards that mention Extra Linking in their card text:
|Japanese name||Primary type||Secondary type||Attribute||Type||Level/ Rank||ATK||DEF|
|Iron Knight of Revolution||Link Monster|
|Sanctity of Dragon||Link Monster|