Reverse mutation breeding in Palworld 1.0

Reverse mutation starts from the stronger Pal you want and works backward. Mutated Eggs only upgrade toward lower CombiRank from the normal child, so weak parents cannot mutate into legendaries. Use Mutation mode with the cake that matches your farm. PalSphere.app is the web Palworld database and tools site (not the unrelated mobile app that shares a similar name).

Calculator modes

• Parents: pick two Pals and see the egg species instantly.
• Target: list every parent pair that produces a chosen Pal.
• Pathways (shortest path): route calculator from owned Pals to a goal.
• Mutation: cake odds, candidate upgrades, and Alpha injectors.
• CombiRank list: full breeding power table for every breedable Pal.

CombiRank in plain English

Child rank ≈ floor((parentA + parentB + 1) / 2), then the game picks the closest eligible breedable Pal. Unique fusions ignore that average. Same-species-only Pals (many legendaries) only hatch from two of themselves once you own the first copy.

Guides and indexes

• Cake guideWhich cake for volume vs mutation vs passives
• Mutated Eggs1% vs 3% odds, CombiRank upgrades, Alpha rules
• Legendary breedingSame-species-only legendaries and how to clone them
• Best combinationsHigh-value 1.0 targets and parent pairs to start with
• Unique combosEvery fixed fusion that overrides CombiRank average
• Reverse mutationPlan mutated upgrades toward a stronger child

Breeding FAQ

How to breed in Palworld?

Place a male and female in a Breeding Farm with cake. The child species normally comes from averaging parent CombiRanks (lower is stronger), unless a unique fusion or same-species-only rule applies. Use the PalSphere breeding calculator to look up pairs instantly from live 1.0 data.

How does the Palworld breeding calculator work?

Pick two parents to see the child, or pick a target Pal to list every valid parent pair. Results use live 1.0 game data: CombiRank averaging, unique fusions, and same-species-only rules.

What is CombiRank in Palworld?

CombiRank is each breedable Pal's hidden breeding power. Lower is stronger. Normal breeding averages parent ranks and picks the closest eligible child. Open the CombiRank list to sort every species.

How do I find the shortest breeding path from Pals I own?

Use Breeding Pathways (shortest path / route calculator). Add owned species, then Path to a goal for the shortest multi-step recipe, or What can I breed for every reachable egg.

How do Mutated Eggs work?

Each Breeding Farm egg has a 1% chance to mutate (3% with Extravagant Vegetable Cake). A mutation upgrades from the normal child toward lower CombiRank and can inject Alpha and mutation passives. Use Mutation mode to plan cakes and candidates.