Initiative

In Sunder, initiative order is loose, responsive, and adaptable to player action. The GM decides who starts the initiative order, often based on actions and events leading up to the instance of combat. Initiative can be started due to combat or an intense moment requiring timing. Either one is called a scene.

Generally, adversary turns happen in response to player turns, this balances combatant action while also maintaining a reactive and cohesive narrative.

Players should "throw in the gauntlet" when they have something to contribute to combat. This can be represented by a physical token presented at the table, raising a hand, or claiming a spot in a queue. Typically, this would go on a first-come first-serve basis, with GM actions in between. However, players are free to withhold their turn in favor of another player that would otherwise be going after them.

Rule of Diminishing Returns

What keeps characters from constantly taking turns is the risked Stress accumulation when rolling Tests and possible adversary retaliation.

Players may coordinate to make group actions. A group action must be combined effort to a single goal. While this circumvents the need to take adversary actions between each participating member's turns, it restricts their action to one focus. Players should describe how they contribute and make a Group Test.

Actions

Generally, a turn consists of two actions: Movement and Attack. These can occur in either order but once the next action is taken, one cannot go back to an incomplete action and continue it. This encourages strategic decisions when choosing actions on a turn.

Movement and Attack

When a character gains a new ability, either during character creation or by using the class feature market, they can receive an Action Card. These Action Cards are what define the character's options during combat. Each Action Card has two sides: an "Attack" side on the top and a "Movement" side on the bottom. During a player's turn, they play two cards. They must choose the top (or "Attack") side of one card, and the bottom (or "Movement") side of the other. During one's turn, a player cannot use the opposite side of the same card they have already chosen one side for, and they cannot choose the same side on both cards.

A Movement Action does not need to be restricted to literal movement. A Movement action could contain a buff that lasts for a certain amount of usages, it could allow for a small secondary weapon strike, or it could involve a defensive effect that lasts the round. The same goes for Attack Actions: Attacks need not specifically be a direct assault against a target creature. They can involve healing targeting an ally, or the activation of a large area of effect ability that lasts for a given duration. These are meant to be interpreted and follow the flavor of a given Action Card's title, where the Attack half is a direct approach and the Movement half is indirect.

Default Actions

Every creature is given a deck of default Action Cards that are accessible to everyone. Some class features may alter these base cards or replace them, but otherwise one player's default Action Cards do not differ from another player's.

Surges and Traits

There are two types of abilities that can be activated outside of a player's turn, at any time during combat: Surges and Traits.

A Surge is akin to a bonus action; it can only be taken once per turn, but is restricted in who it can effect. What gives a Surge its speed and ease is its cutting out of a third party. Surges often only affect its user or its user's possessions. Since there is no target to successfully hit or opposing force to overcome, Surges do not require a Test to be activated, and have a low or otherwise discreet impact to other creatures during combat. This means that a player can activate a Surge by tracking their "per turn" status, and notifying one of their neighbors at the play table. It is common to track Surges by tossing in a token to the center of the table or flipping a coin in front of the player, then resetting after they finish their next turn. This establishes credibility as to when the Surge was activated, as well as definition as to when another Surge can be activated. Once an action has been announced in combat, a Surge cannot be activated temporally prior to the announced action.

A Trait is akin to a passive ability or a reaction; it defines an additional feature about the player's character and provides them with special actions that can be taken under specific circumstances. Traits can increase any stat on a player's character sheet, or alter it in ways fitting the mechanics of Sunder. They can also provide definitions of specific circumstances (e.g. "when an ally within Close range is targeted with an attack dealing physical damage") where the Trait-bearing character can take an action outside of their turn (e.g. "take a point of Stress in Wit to switch places with the targeted ally and become the new target of the attack"). There is no limit to how often these special actions can be taken, just know that special actions like these will always come with a small, repeatable cost.

When a creature activates a Trait in response to its defined circumstances, it is called taking a Reaction.