Steal a Brainrot Rarities, Mutations & Traits Explained

Updated 2026-10-19 · 4 min read

Two brainrots with the same name can be worth very different amounts. One might be plain, while the other glows with a rare mutation and carries an event trait. Understanding rarity, mutations and traits helps you spot a good deal, avoid a bad trade and decide what to keep when your base fills up.

Income and value are not the same thing

Before we dig in, it helps to separate two ideas:

• Income is how much cash a brainrot earns per second in your base. The game shows this number, so it's easy to compare.
• Trade value is what other players are willing to give you for it. The game doesn't set this. The community does, based on supply and demand.

Usually the two move together, but not always. A brainrot from a past event might earn less than a newer one yet still be worth more in trades, simply because fewer of them exist.

Rarity tiers

Every brainrot has a rarity. At the time of writing, the tiers from lowest to highest are:

• Common
• Rare
• Epic
• Legendary
• Mythic
• Brainrot God
• Secret
• OG

As a rule, higher rarities cost more on the conveyor belt and earn more per second. The lower tiers show up on the belt all the time, while the top tiers appear rarely or come mainly from events and other special sources.

Rarity is only a starting point, though. The tiers overlap, so a strong brainrot from one tier can out-earn a weak one from the tier above. Always check the actual income number instead of judging by rarity alone. New brainrots and sometimes new tiers are added in updates, so this list may grow.

Mutations

A mutation changes a brainrot's colors and multiplies its income. A brainrot can only have one mutation at a time.

Common and rare mutations

Some mutations, such as Gold and Diamond, are fairly common and give a modest boost. Others, like Rainbow, are much harder to get and boost income far more. Several mutations have been tied to limited events, such as Galaxy and Yin and Yang, and a few older ones are no longer available in normal play at the time of writing.

Where mutations come from

Mutated brainrots can appear on the conveyor belt, but they are less common than plain ones. Events can add new mutations or make certain ones easier to get for a short time. Mutations that can't be obtained anymore tend to become more valuable in trades because the supply stops growing.

Traits

Traits are a separate layer of boosts. A brainrot with a trait usually shows a small icon or effect above it, and the trait increases its income further. Traits generally don't appear on the conveyor belt. Instead, they come from:

• Events run by the game's team, which often bring a themed trait.
• Weather, such as rain or snow, which can sometimes give brainrots a trait.
• Special rituals, where players do something specific with certain brainrots to trigger an effect.

Because many traits are tied to one-time events, they can become rare quickly once the event ends. That makes them a big factor in trade value.

How it all adds up

Rarity sets a brainrot's base income. A mutation boosts it, and traits boost it again. The exact math has changed over different updates, but the result is the same: a high-rarity brainrot with a strong mutation and a good trait can earn many times what a plain copy earns. That's why a mutated, trait-boosted version of a brainrot can be worth far more than the plain version, even though it's technically the same character.

What drives trade value

When players decide what a brainrot is worth, they usually look at:

• Rarity and base income. Higher tiers and higher earners start with more value.
• Mutation. Rare mutations add a lot, especially ones that can't be obtained anymore.
• Traits. Event traits that are no longer available can push value up sharply.
• Availability. Limited and event-only brainrots hold value better than ones that appear on the belt all the time.
• Demand. Popular brainrots and recent releases can trade above what their numbers suggest, and drop again later.

Values move after every update. A new event can flood the game with one mutation or trait and lower its value, while removing something can raise it.

Checklist before you buy or trade

• Confirm the exact brainrot, rarity and income.
• Check the mutation. Plain and mutated versions are not the same item.
• Look at any traits and whether they are still obtainable.
• Compare against a recent value list, not an old one.
• In a trade, check every detail in the trade window itself before you confirm.

If you're buying from GetPets, take a moment to make sure you've picked the exact version you want before you check out. A little care here saves a lot of disappointment later.

Mechanics and lists in Steal a Brainrot change often, so treat specific examples here as accurate at the time of writing and check the game for the latest details.