In the November 16, 2025, TechWiser tier list, Rainbow ranks highest at 10x income, followed by Radioactive at 8.5x and Yin Yang at 7.5x. The tiers are the guide writer’s editorial ranking—not official game ratings—and the multipliers below are the values that guide listed for that dated snapshot.
November 2025 mutation tier list
This table reproduces the tiers and income multipliers in Shida Aruya’s TechWiser guide, updated November 16, 2025. The guide does not publish a formula for assigning tiers, so treat the letters as editorial judgments rather than a mechanically calculated score.
| Tier | Mutation | Listed income multiplier |
|---|---|---|
| S | Rainbow | 10x |
| S | Radioactive | 8.5x |
| S | Yin Yang | 7.5x |
| A | Lava | 6x |
| A | Glitch | 6x |
| A | Galaxy | 6x |
| B | Celestial | 4x |
| B | Candy | 4x |
| C | Bloodrot | 2x |
| D | Diamond | 1.50x |
| D | Gold | 1.25x |
Source for every tier and multiplier in the table: Shida Aruya’s TechWiser guide, updated November 16, 2025. These are the guide’s published values, not independently verified live-game measurements.
What mutation multipliers mean
A mutation changes a Brainrot’s appearance and income, and a Brainrot can have only one mutation at a time. Traits are a separate mechanic and can stack, so do not read this list as a ranking of every effect a Brainrot might have. The fan reference’s worked example gives Ventoliero Pavonero a base income of $65 million per second and $81.25 million per second with Gold’s 1.25x multiplier; that is an example from the reference, not a general game statistic. Steal a Brainrot Wiki’s mutation reference.
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How to read the ranking
- By listed income: Rainbow leads this snapshot, then Radioactive and Yin Yang. Lava, Glitch, and Galaxy share the same listed multiplier, as do Celestial and Candy.
- By tier: S through D are the guide writer’s buckets. The list is not simply a multiplier sort with a published scoring formula; use the tiers as that guide’s overall editorial ranking.
- By access: A larger multiplier does not mean a mutation is easier to obtain. The reference describes several as tied to events or Admin Abuse conditions, and availability can change when events return or updates alter access.
- By trading value: The list does not establish market prices, rarity rankings, or player demand. A tier or multiplier alone cannot tell you what a mutation is worth in a trade.
Availability and the November cutoff
The mutation reference lists Red Carpet chances of 10% for Gold, 5% for Diamond, and 1% for Rainbow. It also marks Bloodrot, Candy, Lava, Galaxy, Yin Yang, and Radioactive as unobtainable without Admin Abuse outside their event conditions. These are reference-page availability notes, not a promise that a specific route is open now; event access may change after reruns or updates. Steal a Brainrot Wiki’s mutation reference.
Radioactive belongs in a November 16 snapshot: the update log dates its addition to November 15, 2025. The same log dates the Yin-Yang event to September 27, 2025, and notes that it was extended on November 8. Those dates explain the cutoff; they do not make this an up-to-date ranking for later game versions. Steal a Brainrot Wiki update log.
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Halloween effects are not mutations
Jack O’Lantern, RIP Tombstone, and Witching Hour are identified as traits in the Halloween event reference, not mutations. The event is dated October 25, 2025, so those seasonal effects should not be added to this mutation tier list merely because they appeared during the same season. Steal a Brainrot Wiki Halloween event reference.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What this list can—and cannot—tell you
Use the table to compare the November guide’s stated income multipliers and its author’s ordering. For a decision in-game, also check whether the relevant event or access condition is currently active and whether you prefer the mutation’s appearance. The sources do not provide a measured popularity or trading-demand ranking, so neither player preference nor trade value can be inferred from these tiers.
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