Steal An Egg Mutations: All 5 Types and Their Multipliers

What are mutations in Steal An Egg?

A mutation is a visual variant that attaches to an egg or pet and multiplies its cash-per-second income on top of whatever the base rarity already pays. It is visible before the hatch: a mutated egg shows a different shell color in the nest, so you can spot one from across the biome before you pick it up. Because the multiplier stacks separately from rarity, a mutated common pet can genuinely out-earn a plain rare or epic pull.

Five mutations currently exist, split across two separate paths. Silver, Golden and Rainbow appear naturally on eggs found while stealing across the map. Bloom and Spirit Bloom only come from the Sakura Incubator at the end of the Cherry Blossom zone, and that machine needs the Crane pet to activate. The split matters because chasing a natural spawn takes patience and biome access, while chasing an incubator mutation takes a completely different set of prerequisites tied to the end-game zone.

What are the five mutations and their multipliers?

Each mutation carries a fixed multiplier that community trackers have logged by comparing matched pets with and without the variant applied. The developer has not published an official patch note confirming every number, so treat the figures below as the current, widely observed baseline rather than a locked-in formula.

Mutation	Reported multiplier	Source
Silver	1.25x	Natural egg spawn
Golden	2x	Natural egg spawn
Rainbow	2.5x	Natural egg spawn
Bloom	1.5x	Sakura Incubator
Spirit Bloom	3x	Sakura Incubator

Community-logged, not officially confirmed — the numbers above are what players report from matched comparisons, and no official patch note lists them.

Spirit Bloom sits at the top of the list by a clear margin, beating Rainbow by half a multiplier point and doubling what Silver provides on its own. That strength comes with a real cost, because Spirit Bloom only lands a small percentage of the time even when the Sakura Incubator is charged to its maximum. Rainbow stands out as the strongest mutation available without setting foot in the end-game zone, which makes it the practical target for players still working through earlier biomes. Golden and Bloom both sit in a comfortable middle tier — useful enough to keep a pet in rotation, without being worth heavy farming once a stronger variant becomes reachable.

How do you get Silver, Golden and Rainbow mutations?

Natural spawn mutations appear directly on eggs sitting in biome nests, and the shell visibly differs in color from a standard egg before it even gets grabbed. Spawns refresh over time, and mutated eggs are not locked to any single biome or rarity tier, so patrolling the same nests across a play session raises your odds of spotting one.

• Check every nest before committing to a steal: a mutated shell color stands out clearly against a normal egg in the same nest.
• Prioritize the largest egg available: a bigger base egg produces a bigger pet, so a mutation on that pet multiplies a larger starting number.
• Attend Admin Abuse events whenever one runs: these events can hand out mutated eggs directly, skipping the usual spawn odds — see the Admin Abuse schedule.
• Avoid fusing mutated pets with plain copies: the Fuse Machine has a high chance of dropping the mutation unless all three pets going in share the same variant.

Silver, Golden and Rainbow all draw from the same spawn pool, so there is no dedicated farming route for any single one of the three beyond simply stealing more eggs across more biomes. Players working toward Rainbow specifically should expect a longer grind, since it appears to spawn less often than Silver or Golden based on community reports. Holding onto a mutated pet even at a low rarity tier still pays off early, because the multiplier applies regardless of how common the pet is.

How do you get Bloom and Spirit Bloom mutations?

Bloom and Spirit Bloom cannot be found in nests. They come only from the Sakura Incubator in the Cherry Blossom zone, and only after the machine has been activated with a Crane — the Crane guide covers that unlock step by step. Once the Incubator is running, its mutation roll applies Bloom or the much rarer Spirit Bloom to an egg before it hatches.

Spirit Bloom carries the strongest reported multiplier of the five and is also the hardest to land: even at full incubator charge it appears only a small percentage of the time. Bloom is the far more common result of the same roll. Both land on the pet inside the egg, which is why they matter most on an egg you already plan to keep — the mutation is added to the pet you actually hatched, not to a fresh one.

Do mutations stack with size and rarity?

Yes, and this is the part that changes how you value a pet. Size measures a pet’s actual weight in kilograms and applies its own multiplier, separate from both rarity and mutation. Because all three stack together, a mutated common pet with a large size roll can out-earn an unmutated pet several rarity tiers above it.

Larger eggs tend to hatch into heavier, higher-paying pets, which makes the biggest egg in a nest worth prioritizing over a smaller one nearby. When you compare two pets, check the mutation label and the size roll first and the rarity tier last — those two rolls decide whether a low-rarity pull is a genuine earner. The pets index tracks confirmed pet records by biome and rarity, and the beginner guide covers route planning and Speed; a mutation changes a pet’s income, not the way you steal it.

Nothing about mutations is tied to redemption codes. The codes page lists anything currently active, which is free value before a long farming session, but no code can add a mutation to a pet.

Does the Fuse Machine remove mutations?

A mutation can be lost at the Fuse Machine. Fusing three pets risks dropping the mutation unless every pet going into the machine already carries the same one. The safe rule is never to combine a mutated pet with plain copies: either fuse three pets that all share the identical mutation, or keep the mutated pet out of the machine entirely. [Unconfirmed] The exact loss chance has not been published, so treat any fuse that involves a mutated pet as a real risk rather than a calculated one.

Steal An Egg Mutations: FAQ

Which Steal An Egg mutation is the best?

Spirit Bloom, at a reported 3x, is the strongest of the five — but it comes only from the Sakura Incubator and lands a small percentage of the time even at full charge. If you have not reached the Cherry Blossom zone yet, Rainbow (2.5x) is the strongest mutation available to you, because it spawns naturally on eggs across the map.

How do I know an egg is mutated before I pick it up?

The shell changes color. A mutated egg looks different from the standard eggs in the same nest, and that difference is visible before the egg gets picked up — which is exactly why checking every nest before committing to a steal is worth the extra second.

Can a mutated common pet beat a rare pet?

Yes. Mutation, size and rarity each apply their own separate multiplier, so a mutated common with a large size roll can out-earn an unmutated pet several rarity tiers above it. Compare the mutation label and the weight before you compare rarity tiers.

Are the mutation multipliers official?

No. The figures in the table are community-logged from matched comparisons between pets with and without the variant applied. The developer has not published a patch note confirming them, so confirm the boost on your own pet screen before you value a mutated pet.