Extra Monster Zone

Extra Monster Zones are the 2 Zones in the center of the field where monsters Summoned from the Extra Deck are placed on the field.

If a Fusion, Synchro, Xyz, or Pendulum Monster is Special Summoned from the Extra Deck, it must be placed in the Extra Monster Zone or a Linked Zone. (If one of these monsters would be Special Summoned from another location, it is placed in a Main Monster Zone.)

While both Extra Monster Zones are unoccupied, neither is treated as being part of the field of any player. When a player Special Summons a monster to an Extra Monster Zone, that zone is then treated as part of their field while it is occupied, while the other zone is automatically treated as part of their opponent's field. A player can only occupy 1 Extra Monster Zone at a time.