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PalBreedPath

Palworld 1.0 Passive Inheritance: What the Planner Can Verify

A breeding path is two separate questions: which species a pair produces, and which passives the child can inherit. PalBreedPath evaluates them differently — and labels each result accordingly.

Deterministic: the species result

Given two parent species, the child species is deterministic under the active rules. Same-species pairs produce the same species; verified special pairs override the generic formula; everything else follows the breeding-rank formula for the active dataset version. When the planner shows a species chain, every edge resolves through one of those rule kinds, and the rule marker on each step links to its provenance.

Probabilistic: passive inheritance

Passives are different. A child inherits passives from its parents with probability, not certainty — so a path can only promise that a passive is reachable, never that one egg will carry it. That is why cost numbers are labeled estimates: the expected attempts grow with how specific your passive requirements are. The planner never presents a probabilistic estimate as a guaranteed outcome.

Inheritable vs exclusive vs unsupported

  • Inheritable passives can transfer to a child when a parent carries them. These are the passives the target editor lists.
  • Exclusive passives are restricted to specific Pals by verified rules. Asking for one on the wrong target returns an impossible result that names the blocking rule — it is not a search failure.
  • Non-inheritable passives cannot move through breeding at all in the active dataset.
  • Unsupported rules are ones we have not verified. They return an explicit unknown state; the planner does not guess.

What this means for your plan

Put passives you actually own on the roster Pal that carries them, and mark target passives as required only when the build truly needs them. Required passives that no chain parent carries surface as a named assumption, so you can decide whether to hunt for a carrier first.

Ready to check a build? Open the planner or read about mutation rules and limits.