OOofWiki

Mutations & Income Calculator

Every color mutation and its multiplier — plus a calculator to see exactly what your pet earns.

Updated Sep 30, 2026🐾 197 pets🗺️ 12 biomes 🛠️ by Collect Rare Pets

🧮 Pet income calculator

Pick a pet, enter its weight from the pet card, and choose its mutation.

Estimated income
$25M/s
Base $25M/s × size 1.00 × mutation 1 · 1.0× base weight (7,500 kg)

🌈 Color mutations

Mutations (also called auras) change how a pet looks and multiply its income. They're rolled separately from size, so you can get a Golden Giant or a plain Huge.

Rainbow mutation

Rainbow

×3.5

Animated rainbow colors. Extremely rare hatch roll (1 in 100 roll weight).

Parasite mutation

Parasite

×3

Not a normal roll — comes from the Parasite Egg (Hungry Frog feeding event).

Fractured mutation

Fractured

×2.75

Apply a Mutation Shard from the Rift Boss Shop to an egg (10% chance), or Boss Mastery rewards.

Scrambled mutation

Scrambled

×2.75

Poison-like effect. Buy in Dr. Scramble's Experiment Shop and apply to an egg (10% chance).

Golden mutation

Golden

×2.5

Shiny gold with coin particles. Normal hatch roll (4 in 100).

Spirit Bloom mutation

Spirit Bloom

×2.5

Green spirit aura. Only from the Sakura Incubator (5% chance, 10% at max charge).

Bloom mutation

Bloom

×1.25

Cherry blossom petals. Sakura Incubator / Cherry Blossom event.

Silver mutation

Silver

×1.2

Metallic silver shine. Normal hatch roll (6 in 100).

How size & weight affect income

Every pet has a hidden base weight (shown in our pet list). The heavier your pet compared to its base weight, the more it earns:

Income = Base × Mutation × (Weight ÷ BaseWeight)37/60

Above 125× the base weight, returns start to shrink:

Income = Base × Mutation × (Weight ÷ BaseWeight)2/5 × 12513/60

So a 100× egg earns about 17× base, a 200× egg about 23×, and a 1000× egg about 45×.

🌸 Sakura Incubator (Bloom mutations)

Spirit Bloom and Bloom come from the Sakura Incubator in the Cherry Blossom biome: collect Sakura Crystals during the Great Bloom, place a pet inside and charge it. Max charge doubles the Spirit Bloom chance from 5% to 10%. (Not currently active.)