The reference model applies the dated size curve, additive mutation factors and rounding sequence. Use the live displayed income for the final team decision.
Test one mutation pair
Compare the same species at nearly the same weight. Inputs stay in this page until you copy the evidence packet.
Enter a controlled pair, then evaluate it.
Weight, upgrades and boosts can change income independently of mutation.Community configuration reference under test
The following values are useful hypotheses for controlled tests. The source says they come from a v490 catalog and client-function export; neither artifact is a creator-published patch note, so this table is not promoted to Verified.
| Displayed name | Configuration name | Reported scalar | Ordinary roll weight | Current treatment |
|---|---|---|---|---|
| Silver | Silver | 1.2x | 6 | Community configuration reference |
| Golden | Golden | 2.5x | 4 | Community configuration reference |
| Rainbow | Rainbow | 3.5x | 1 | Community configuration reference |
| Bloom | Sakura | 1.25x | 0 | Community configuration reference |
| Spirit Bloom | GreatBloom | 2.5x | 0 | Community configuration reference |
| Parasite | Monstrous | 3x | 0 | Community configuration reference |
| Fractured | Boss | 2.75x | 0 | Community configuration reference |
Reference checked September 15, 2026: Combined mutation factor = 1 + sum of each bonus above 1. Ordinary roll weights describe the source's baseline table, not guaranteed player outcomes. Inspect the dated source ↗
How mutation stacking is modeled
The source-described formula adds each bonus above 1: 1 + Σ(scalar − 1). It does not multiply every scalar together. These examples are transparent test hypotheses, not verified live-game outcomes.
| Reference pair | Additive calculation | Modeled factor | What to verify |
|---|---|---|---|
| Silver + Golden | 1 + 0.2 + 1.5 | 2.70x | Same pet and weight with both labels visible |
| Golden + Rainbow | 1 + 1.5 + 2.5 | 5.00x | Do not substitute 8.75x multiplication |
| Rainbow + Parasite | 1 + 2.5 + 2.0 | 5.50x | Parasite label and current displayed income |
| Bloom + Spirit Bloom | 1 + 0.25 + 1.5 | 2.75x | Whether both can coexist on one current pet |
Open the 135-profile income calculator to model a pair, then replace the estimate with the current displayed rate.
How to get each mutation: current evidence
| Mutation | Reported route | Evidence retained here | Current treatment |
|---|---|---|---|
| Silver | Ordinary configuration pool; relative weight 6 | Dated v490 configuration source | Reference weight, not a 6% chance |
| Golden | Ordinary configuration pool; relative weight 4 | Dated v490 configuration source | Reference weight, not a 4% chance |
| Rainbow | Ordinary configuration pool; relative weight 1 | Configuration reference plus a Rainbow Mosasaurus source lead | Acquisition details and multiplier remain disputed |
| Bloom | Community Sakura Incubator route | Sakura charge panel shows Bloom 97.5% | Historical third-party observation |
| Spirit Bloom | Community Sakura Incubator route | Sakura charge panel shows Spirit Bloom 2.5% | 150% outcome is not shown |
| Parasite | Community Monster Chest route | Reward panel labels Parasite Egg 1.5% and a guaranteed mutation note | Current reward pool unconfirmed |
| Fractured | Community Rift Boss Shop / Mastery coverage | Boss configuration name and reported Mutation Consumable | Route, chance and availability need current UI |
Acquisition boundary: a zero ordinary-roll weight in the configuration reference does not prove that an event route is current or exclusive. See the Boss Mastery, Boss Tokens and Rift guide for the separate Fractured claims.
The frame shows a Crane labeled Epic with a displayed $8K/s rate.
This instance rate does not establish base income or whether the Crane is consumed.
The screenshot provides a visual reference for the pink tree area described in the source's Great Bloom coverage.
A still image cannot establish the event interval, duration or crystal yield.
The panel shows 0% charge, a 100% unlock threshold, a 150% maximum, and Bloom 97.5% / Spirit Bloom 2.5% labels.
The image does not show the outcome at 150%. A guaranteed Spirit Bloom result remains unconfirmed.
The chest panel labels its final reward Parasite Egg at 1.5%, with a guaranteed Parasite mutation note.
The original wording is retained. It does not resolve the conflicting Monstrous name or confirm the current reward pool.
Community mutation claims compared
This table records what current third-party guides claim; it is not an official multiplier table. Agreement can prioritize a test, but only readable game UI or a controlled before-and-after comparison can move a value into the verified column.
| Mutation name | Community claim | Current evidence status |
|---|---|---|
| Golden | 2× in AllThings.How and Beebom | Community agreement; no controlled in-game test retained |
| Silver | 1.25× in the same two guides | Community agreement; readable label and comparison still needed |
| Rainbow | 2.5× in two guides; another fan wiki claims 5× | Conflicting — do not publish either number as fact |
| Bloom | 1.5× in two community guides | Community agreement; not verified by this wiki |
| Spirit Bloom | 3× in two community guides | Community agreement; not verified by this wiki |
Source quality: secondary community guides. None of the compared pages is the Roblox creator or an official Steal An Egg patch note.
Rainbow mutation evidence snapshot
| Field | Observed value | Evidence status |
|---|---|---|
| Visible outcome | Rainbow Mosasaurus | Community video lead |
| Visible rarity | Eternal | Supported separately by an official Eternal hatch badge |
| Displayed income | $1.3B/s | Visible value; not a multiplier |
| Individual egg name | Unknown | “Rainbow Eternal Egg” may be descriptive video wording |
| Price and location | Unknown | Needs readable in-game UI |
The video is a discovery source, not first-party documentation. The wiki keeps the visible facts and unknown fields separate.
Readable in-game mutation field
The BIG Mosasaurus Steal DNA panel includes a visible MUTATIONS field and a gray icon. This proves that a captured result can expose a mutation slot in the result UI. The icon is not accompanied by a readable type name, so this wiki does not label it Stone, Rock, Gray or any other guessed mutation.
| Observed field | Visible value | Evidence limit |
|---|---|---|
| Result | BIG Mosasaurus · Eternal | Readable DNA panel |
| Displayed income | $5B/s | One 6,898,039kg instance, not a base value |
| Mutation field | Gray icon visible | Type name and multiplier are not shown |
What the official material supports
- The game description explicitly says players can discover mutations.
- Mutations are listed alongside eggs, pets and sizes, suggesting a separate attribute.
- An official thumbnail shows a rainbow-gradient egg with a snowflake symbol and altered text.
What the artwork does not prove
A snowflake icon may indicate an ice-themed variant, and the rainbow shell may indicate another property—but a promotional image is not enough to name the mutation, define the effect or assign a multiplier. We preserve the visual as evidence and leave the mechanics open.
Fields waiting for testing
| Field | Status | Evidence needed |
|---|---|---|
| Official complete mutation list | Unknown | Creator-published list or current displayed labels |
| Income multiplier | Unknown | Same base pet before/after comparison |
| Egg compatibility | Unknown | Repeatable hatch or egg UI evidence |
| Visual effects | Partially visible | Uncropped gameplay capture |
| Interaction with size | Unknown | Record showing both attributes |
How to verify a mutation multiplier
- Record the unmutated pet’s exact displayed income, rarity and size.
- Record the mutated version of the same base pet with upgrades and server state unchanged.
- Divide mutated income by base income and keep both screenshots with the patch date.
- Repeat the comparison on a second pet before treating the ratio as a general multiplier.
Use the income calculator to compare the two displayed values without turning one community observation into a universal rule.
Do not borrow mutation lists
Mutation names from other Roblox collection games are not automatically valid here. We will not publish a familiar-sounding list simply because another game uses Golden, Rainbow, Ice or similar labels.
Related research
Use the pet database model to see how mutation, size and rarity are stored separately, read the Boss Mastery and Rift guide for Fractured claims, or open the all-eggs index for the confirmed hatch loop.