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The stagger system drives every battle in Final Fantasy Resonance. Each enemy carries a gauge separate from its HP, and managing that gauge determines when the party gets free actions, damage windows, and access to its vision ultimates.
The Stagger Gauge
Every enemy has a Stagger Gauge displayed under its HP bar. Every hit shaves the gauge down, and hitting an elemental weakness shaves it further. Because the gauge is independent of HP, attacking is always a choice between two currencies: some abilities deal strong HP damage with little stagger value, while others chip HP but tear through the gauge.
The Staggered State
When the gauge empties, the enemy is staggered. A staggered enemy loses its action for that turn and its defense drops, so follow-up attacks land harder. The reward goes further: the character who staggered the enemy is granted an extra action at the end of the turn.
The Bonus Phase
That extra action takes place in the bonus phase, a window appended to the end of the turn. In preview builds, the in-game label for this window reads EXTRA PHASE. The bonus action is not limited to attacking; non-attack commands are allowed as well, so the window does not have to be spent on damage.
Sweeping Stagger
Staggering all enemies on the field triggers a sweeping stagger. When it happens, every party member receives a bonus-phase action, including characters who did not land a stagger themselves. One preview observed the trigger when all enemies were staggered within the same turn; official materials state the condition simply as all enemies becoming staggered. In a battle against a single enemy, staggering it counts as a sweeping stagger immediately.
A sweeping stagger is also the only gateway to Resonance Attacks, the cinematic ultimates tied to equipped Visions. One Resonance can be fired at the end of each sweeping stagger's bonus phase, at no resource cost.
Japanese Terminology
Japanese materials use different labels for the same mechanics: stagger is Break, the Stagger Gauge is the Break Gauge, and a sweeping stagger is a Full Break. This wiki uses the official English terms throughout.
Ties to the Wider System
Stagger management threads through the rest of the design. On the Casual difficulty, enemies are easier to stagger. Several mastery abilities key off staggers, including MP recovery when one lands and boosts to stagger damage; see Abilities and Mastery for the build layer. For turn flow, encounter design, and difficulty details, see Combat.