How Fusion Breeding Works: Hardcoded Overrides vs Standard CombiRank
In standard Palworld breeding, offspring species are calculated by averaging the hidden CombiRank of Parent 1 and Parent 2. However, **Fusion Breeding** operates as a hardcoded override system in the game engine:
- Override Table Priority: When an egg is produced, the game code checks the unique combinations table (
unique_combos.json) first. If your parent pair matches one of the 80+ special recipes, the game bypasses rank math and awards the designated fusion child 100% of the time. - Elemental Type Shifting: Breeding fusions allows players to acquire elemental counters. For instance, pairing Water-type Relaxaurus with Electric-type Sparkit shifts the typing to Dragon / Electric (Relaxaurus Lux).
- Gender Independence: Unless specified by a rare edge case, you only need one Male and one Female parent. Either parent can be the base Pal or the catalyst.