Trigger Probability is the game’s shorthand for “chance to proc.” When an effect has a chance to activate — an on-hit bonus, a conditional shot, or a weapon perk without a clearly stated trigger — Trigger Probability governs how often that effect fires. Think of it as a percentage roll each time the relevant condition is met: at 30%, you expect roughly three activations per 10 eligible events over time.
Where Trigger Probability shows up (and baseline values)
You’ll see Trigger Probability listed alongside familiar stats like CRIT Chance and CRIT Damage on weapons. Even the starter guns surface it clearly, and they set useful benchmarks for early builds.
| Weapon | Type | Built-in effect | Spike ATK | CRIT Chance | CRIT Damage | ATK Speed | Trigger Probability | Multishot | Mag Capacity | Max Ammo |
|---|---|---|---|---|---|---|---|---|---|---|
| Osteobreaker | Assault Rifle | Deals more damage the fuller the magazine is, up to +18.0%. | 17 | 23% | 225% | 1 | 30% | 1 | 50 | 200 |
| Screamshot | Shotgun | Deals more damage the closer you are, up to +18.0%. | 18 | 20% | 180% | 1 | 20% | 1 | 6 | 60 |
Not every weapon effect lists its own percentage. In those cases, Trigger Probability typically determines how frequently that effect activates.
What Trigger Probability actually affects
Trigger Probability applies to effects that have a chance to happen — either explicitly (“X% chance to…”) or implicitly (perks that don’t specify a trigger condition but don’t happen on every hit). Common examples include:
- On-hit or on-damage procs that add extra damage or a secondary effect.
- Conditional weapon perks that only fire some of the time.
If a perk always happens (for example, a passive damage bonus with no random element), Trigger Probability doesn’t change it. If the text calls out its own percentage, the game uses that explicit value.
Trigger Probability vs. CRIT stats
CRIT Chance and CRIT Damage determine how often attacks crit and how hard those crits hit. Trigger Probability is separate: it governs the frequency of chance-based effects, not the strength of crits. Importantly, Skill Damage cannot crit, so stacking CRIT stats won’t improve skill-only damage. That has no bearing on Trigger Probability — chance-based effects can still roll independently of crit mechanics.
In short:
- CRIT Chance/CRIT Damage: affect critical hits.
- Trigger Probability: affects how often chance-based effects occur.
How to increase Trigger Probability
There are two practical levers:
- Weapon choice: some weapons simply ship with higher Trigger Probability (for example, Osteobreaker at 30% versus Screamshot at 20%).
- Team support: certain supports can buff Trigger Probability for the party. The Protagonist’s kit includes a buff that increases Trigger Probability alongside shields and other offensive bonuses.
When to prioritize Trigger Probability
- High priority: builds that rely on on-hit procs or chance-based weapon perks for most of their damage or utility.
- Medium priority: hybrid setups where procs are valuable but not the main damage source.
- Low priority: pure raw-damage or range-scaling builds where your gun’s passive always applies and you’re not chasing chance effects.
A simple way to estimate value: if a perk contributes meaningful damage or utility per proc, increasing Trigger Probability yields a near-linear increase in how often you see that value. For example, moving from 20% to 30% raises expected proc frequency by 50% over long fights, assuming the same number of eligible events.
Quick checks before you commit
- Read your weapon perk text: if it mentions a chance or omits a clear trigger, Trigger Probability likely governs its activation rate.
- Check your team comp: if you’re running the Protagonist’s Trigger Probability buff, a higher base value on your weapon scales even better.
- Compare expected value: weigh a proc’s impact multiplied by its chance versus flat bonuses from other stats.
Treat Trigger Probability as a consistency dial for chance-based power. If your build depends on those moments hitting on time, raise it. If not, lean on stats that always pay off — and don’t confuse it with crit.
