Steal a Brainrot Mutations (June 2026)
Mutations multiply a brainrot's value and income. Here is every mutation and its multiplier, from Normal up to Phantom — currently the strongest at ×12. Use the trade calculator to factor mutations into any trade.
| Mutation | Multiplier | Notes |
|---|---|---|
| Phantom | ×12 | Added in the Summer Update at ×12 — the highest multiplier in the game. Phantom units are the most prized in trades. |
| Cyber | ×11 | Introduced in April 2026 at ×11, briefly the strongest mutation. |
| Rainbow | ×10 | A high-tier mutation at ×10 — long the top multiplier before Cyber and Phantom. |
| Lava | ×6 | A mid-tier mutation worth 6× base value. |
| Diamond | ×1.5 | A step above Gold at ×1.5 — noticeable but still common. |
| Gold | ×1.25 | A common early mutation giving a small +25% value boost. |
| Normal | ×1 | The default, un-mutated state. Base value with no multiplier. |
FAQ
What is the best mutation in Steal a Brainrot?
Phantom is the best mutation, with a ×12 value multiplier — the highest in the game, added in the Summer Update. Cyber (×11) and Rainbow (×10) are next.
How do mutations affect brainrot value?
A mutation multiplies a brainrot's base trade value and income. A Phantom brainrot is worth 12× its normal value, so mutated units are far more valuable in trades.
How do you get the Phantom mutation?
Phantom was introduced in the Summer Update (Update 53). It's applied through event mutation content; because it's the rarest mutation, Phantom units command a big premium.