Turf Duel

A Turf Duel (ターフ・デュエル Tāfu Dyueru) is a style of Action Duel that involves claiming areas of the field in order to Duel.

At the start of a Turf Duel, each player selects a specific color that will represent them throughout the game, and the Action Field will then be activated. Turf Duels are capable of playing multiple sets of rules, from standard "deplete your opponent's LP" to "control more of the field after a certain time" to "complete an objective first".

The most notable feature of Turf Duels is that the Monster Card Zones of the players' Duel Disks are inactive during them: Instead, they utilize special Action Fields that scatter these Zones across the area. However, the players' Spell & Trap Card Zones can still be used as normal. In order for players to actually Summon monsters in a Turf Duel, players are required to locate "Turf Marker" Action Cards, which will allow them to claim scattered Monster Card Zones for themselves, changing them to their color. Any colored Zone can have a monster Summoned in it, but if the monster is owned by a player whose color doesn't match the Zone's color, the monster will suffer penalties. If a monster is destroyed by battle while the opposing monster is in a Zone matching their player's color, the destroyed monster's Zone will be claimed by the victorious monster.

Naturally, controlling as many Monster Card Zones as the player can as possible is key to victory in a Turf Duel, which means a Turf Duelist has to know when to pick their battles. Monsters can only attack monsters that are near them within a certain radius that varies from monster to monster, giving Turf Duels a greater element of strategy.

No practitioners of Turf Duels in the Standard Dimension are currently known, but Turf Dueling has become quite popular in the Composition Dimension.

Trivia

 * Turf Duels were inspired by Nintendo's colorful map-claiming shooter game, Splatoon. Fittingly enough, the Composition Dimension version of Sigma City takes several design cues from Inkopolis, the main city in Splatoon.