Catch Rate Calculator

Model Demon Ball catches with HP deficit, ball tier multiplier, bloodline multipliers, and hidden-only perks like Level B Catch Chance 2.

Catch Probability-

Expected Balls-

Reciprocal of the final normalized probability.

Weakness Threshold-

HP % required for a 90% success rate with the current ball and bloodline.

Pity Override-

If failed attempts ≥ 50, the calculator hardcodes 100% (mirrors the documented pity system).

Formula

rate = min(1, (1 - hpPct / 100) × ballMul × bloodlineMul × (hiddenPerk ? 1.5 : 1) × bossPenalty)

If HP = 0, the calculator throws a UI error (the entity is defeated, not catchable). If boss penalty applies, the rate is multiplied by 0.65.

Orbit Fin is treated as a hard bottleneck. Even at 1% HP with Demon Ball, the calculator surfaces a warning that 44% is the documented ceiling.

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