Rainbow is the best mutation in Steal An Egg, multiplying a pet’s income by 3.5x. Parasite (3x) takes second place, while Enchanted (~2.8x), Fractured, Scrambled, and Nitro (2.75x each) fill out A tier. Every mutation multiplies the cash your pets generate per second, and it stacks with the separate size roll, so the gap between a Silver pet and a Rainbow one is massive.
I cross-checked every multiplier against the community wiki and the newest event guides before ranking all ten mutations below — here’s the whole picture at a glance.
| Tier | Mutations (multiplier) |
|---|---|
| S | Rainbow (3.5x), Parasite (3x) |
| A | Enchanted (~2.8x), Fractured (2.75x), Scrambled (2.75x), Nitro (2.75x) |
| B | Golden (2.5x), Spirit Bloom (2.5x) |
| C | Bloom (1.25x), Silver (1.2x) |
How I Ranked Every Mutation?
I judged each mutation on three factors: its income multiplier, how reliably you can obtain it, and whether it stacks with anything else. The multiplier sets the tier, but availability decides whether that tier matters in practice — a 3.5x Rainbow with a 1-in-100 roll weight is a lottery ticket, while Enchanted Essence applies its ~2.8x mutation 100% of the time.
Event-exclusive mutations also lose points when the event isn’t live, which is why some strong multipliers rank lower than their raw numbers suggest. Size never factors in here because it’s an independent trait, and I break down exactly how the two systems stack together later in this guide.
All Steal An Egg Mutations Ranked?
| Mutation | Multiplier | How to Get |
|---|---|---|
| Rainbow | x3.5 | Rare hatch roll or Admin Abuse events |
| Parasite | x3 | Hatch a Parasite Egg from the Hungry Frog event |
| Enchanted | ~x2.8 | Enchanted Essence from the Butterfly Bloom event |
| Fractured | x2.75 | Mutation Consumable from the Rift Boss shop (10% chance) |
| Scrambled | x2.75 | Consumable from Dr. Scramble’s Experiment Shop (10% chance) |
| Nitro | x2.75 | Nitro Race event shop, bought with Trophies (10% chance) |
| Golden | x2.5 | Rare hatch roll or Admin Abuse events |
| Spirit Bloom | x2.5 | Sakura Incubator in the Cherry Blossom biome |
| Bloom | x1.25 | Sakura Incubator in the Cherry Blossom biome |
| Silver | x1.2 | Common hatch roll or Admin Abuse events |
A few notes before you grind. Rainbow carries a 1-in-100 roll weight, Golden sits at 4-in-100, and Silver at 6-in-100, which is why Silver pets feel like they’re everywhere while Rainbows never show up. Golden’s 2.5x comes from the community wiki’s roll data — some older guides still round it down to 2x, but the wiki numbers match what I’m seeing in-game this October. The Monster Chest can also hatch a Monstrous pet, but its multiplier isn’t confirmed yet, so I left it off the table rather than guess.
How to Get Every Mutation in Steal An Egg?
Natural hatching and Admin Abuse. Silver, Golden, and Rainbow can appear on any egg you hatch, and you can actually spot them before you steal — mutated shells glow silver, gold, or rainbow in the nest. Always grab the biggest mutated shell you can carry. Saturday Admin Abuse events roll extra chances at all three, and they’re the most realistic Rainbow source since the base hatch odds are brutal.
The Fuse Machine. Drop three identical pets into the Fuse Machine near spawn and the result can come out mutated. If all three copies already share a mutation, the fused pet keeps it — and usually hatches bigger, stacking even more income on top.
The Sakura Incubator. Unlock it in the Cherry Blossom biome by submitting a Crane pet; the Crane is consumed, but the incubator stays unlocked permanently. Charge it with Sakura Crystals, place any egg inside, and Bloom (1.25x) is the common result while Spirit Bloom (2.5x) is the rare one — maxing the charge doubles your Spirit Bloom odds. My favorite trick: insert an egg that already holds Golden or Rainbow, because Bloom stacks on top of the existing mutation instead of replacing it.
Event consumables. Four events hand out mutation consumables. The Rift Boss fight sells Fractured consumables for Boss Tokens, Dr. Scramble’s Experiment Shop trades Samples for Scrambled, the Nitro Race shop takes Trophies for Nitro, and the Butterfly Bloom event rewards Enchanted Essence — the only consumable with a 100% application chance. The other three apply at 10% each, so buy several per run. The Halloween Dimension event is also live until October 24, and our Halloween update guide covers what’s worth farming before Part 1 closes.
The Hungry Frog. Feed it five infected eggs during the event and it has a 1.5% chance to drop a Parasite Egg. Hatch that egg for a guaranteed 3x Parasite pet — the most reliable S-tier income boost in the game.
Sizes Stack With Mutations
Mutation multipliers don’t replace the size system — they multiply together. The formula the wiki documents is simple: final income = base income × mutation multiplier × size multiplier. That’s why a Golden Giant can out-earn a plain Rainbow, and why a mutated common pet with a huge weight roll beats an unmutated rare every time.
Weight is rolled separately at hatch and shown in kilograms on the pet card, so always check the money-per-second card before you trade, fuse, or sell anything. When two eggs look similar in the nest, the heavier one almost always wins long-term. Treat every hatch as a three-part result — rarity, size, and mutation — and never judge a pet on rarity alone.
Pro Tips for Farming Rare Mutations
- Save mutated duplicates for fusing. Three same-mutation copies keep the mutation and reroll size upward. Fusing mutated pets with plain ones is a wasted slot — wait for a full set.
- Server-hop during Admin Abuse. Fresh servers mean fresh egg spawns, and mutated shells are visible before you steal them.
- Never skip a Butterfly Bloom. Enchanted Essence is the only guaranteed mutation in the game, so farm a few Essences every rotation.
- Fix your speed first. Better biomes hold better eggs, and our Break and Steal an Egg pickaxe list shows which tools unlock the late zones without wasting cash.
FAQs
What is the best mutation in Steal An Egg?
Rainbow, at 3.5x income, is the strongest. Because its hatch odds are so low, most players treat Parasite (3x) or Enchanted (~2.8x) as the realistic best targets.
How do you get the Parasite mutation?
Feed five infected eggs to the Hungry Frog during the event, then open the Parasite Egg if it drops — a 1.5% chance — and hatch the pet inside for a guaranteed 3x.
Do mutations stack in Steal An Egg?
Yes. Mutations multiply with size rolls, and placing an already-mutated egg into the Sakura Incubator adds Bloom or Spirit Bloom on top of the existing mutation.
Are there Steal An Egg codes for free mutations?
No. The game has no code box, so any site promising mutation codes is chasing clicks. Real freebies come through Admin Abuse events — our Roblox codes master list covers games that do redeem.
What’s the rarest mutation in Steal An Egg?
Rainbow, with a 1-in-100 roll weight. Golden (4-in-100) and Silver (6-in-100) are far more common, while Spirit Bloom only comes from the Sakura Incubator.
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