|Japanese (base text)||
The Pendulum Zones (Japanese: ペンデュラムゾーン Pendyuramu Zōn, abbreviated
In addition to being played as a monster, a Pendulum Monster can alternatively be activated from the hand as a Spell Card in a Pendulum Zone. Some card effects can place a Pendulum Monster in the Pendulum Zone without activating it. While in a Pendulum Zone, the Pendulum Monster's Pendulum Effects are applied rather than its monster effects. A Pendulum Monster cannot be Set in a Pendulum Zone. Pendulum Monsters are only treated as Spell Cards (of a non-specific variety), not monsters, while in a Pendulum Zone.
The Pendulum Zones are located in the leftmost and rightmost Spell & Trap Zones. These Spell & Trap Zones are treated as Pendulum Zones as well only if there is a Pendulum Monster in that zone, regardless of its complementary zone, but effects that place Pendulum Monsters in Pendulum Zones can still place them in these zones even while they are unoccupied.
If a Pendulum Monster is placed in a Spell & Trap Zone due to being treated as a different type of Spell or Trap Card (e.g. Equip Spell or Continuous Trap), its Spell & Trap Zone is not treated as a Pendulum Zone, and it does not gain its Pendulum Effect.
Prior to the release of Starter Deck 2017 in the OCG and Starter Deck: Link Strike in the TCG, the Pendulum Zones were distinct zones in which only Pendulum Monsters could be placed, and only as Spell Cards. The left Pendulum Zone was located in between the Field Zone and the Extra Deck Zone, and the right Pendulum Zone was located in between the Graveyard Zone and the Deck Zone.
Yu-Gi-Oh! Duel Links
In Yu-Gi-Oh! Duel Links, Pendulum Zones are normally located in the left and right Spell & Trap Zones, which are only treated as Pendulum Zones while there is a Pendulum Monster in them.
Some Skills can create Pendulum Zones outside of the Spell & Trap Zones, in the same positions as the "old field". If a Skill like this is used, that player can no longer use their Spell & Trap Zones as Pendulum Zones. Because these Skills only create separate Pendulum Zones for the player who used the Skill, this can result in an asymmetric field, where only one player has exclusive Pendulum Zones.