Crystal mutation: 13x income, how to get it
By multiplier it is number 2 of 15 mutations, where 1 is the highest.
Formula follows the wiki's worked examples. Not verified in game.
Crystal mutation facts
| Multiplier | 13x |
|---|---|
| Type | Event mutation (Limited on the wiki) |
| In game since | Jul 25, 2026 |
| Appears during | Crystal event |
| Event runs every | 30 minutes |
A brainrot carries one mutation at a time, and the wiki says collecting 75% (3 of 4) of the obtainable brainrots in one mutation unlocks a base skin.
Worked example with a $65M/s brainrot
| Setup | Multiplier | Income |
|---|---|---|
| No mutation | 1x | $65M/s |
| Crystal | 13x | $845M/s |
| Crystal + Fire | 18x | $1.17B/s |
| Crystal + Fire + Nyan | 23x | $1.495B/s |
The example brainrot is Ventoliero Pavonero, the one the wiki uses on its Mutations page. Multiplier = mutation + traits, income = base x multiplier. Fire and Nyan are 5x each.
Nearby mutations
All mutations and traits · Calculate with Crystal
Questions
What does the Crystal mutation do to income?
It sets the mutation part of the multiplier to 13x. For the wiki's $65M/s example brainrot that is $845M/s alone, $1.17B/s with Fire (5x) and $1.495B/s with Fire and Nyan. Traits are added to the mutation, not multiplied with it. This follows the wiki's examples and is not verified in game.
How do I get the Crystal mutation?
The wiki says there is a mild chance that it applies to a brainrot during the Crystal event. The event runs every 30 minutes.
Was the Crystal mutation always planned?
Not in this form. The wiki says a Frost mutation was supposed to follow Phantom, but the developer dropped it and Crystal was added instead, in game from Jul 25, 2026.
Source: Steal a Brainrot Wiki: Mutations (rev 189024, Oct 14, 2026), Template:MutationText (rev 186393, Oct 3, 2026), Template:BrainrotFormula (rev 161404, Jul 9, 2026). Licence: CC BY-SA 3.0. Facts were restructured and the numbers recalculated here; the text is our own and no wiki images are used. Changes were made. Checked Oct 15, 2026. Not affiliated with Roblox Corporation or the developers of Steal a Brainrot.