Question 1

What is the best mutation in Steal a Brainrot?

Accepted Answer

Cyber is the new best mutation as of April 18, 2026, with an 11× income multiplier — the highest in the game. Rainbow and Divine sit in second tier at 10×.

Question 2

How do mutations stack with traits?

Accepted Answer

Mutations and traits stack multiplicatively. A Cyber-mutated brainrot with the Galactic trait multiplies base income by mutation × trait, plus any rebirth and synergy bonuses.

Question 3

Can a brainrot have more than one mutation?

Accepted Answer

No. Each brainrot holds exactly one mutation slot. Rerolling with a Mutation Spinner overwrites the existing mutation. Always plan rerolls carefully because top mutations are very rare.

Question 4

How do you get rare mutations like Bloodrot or Cyber?

Accepted Answer

Both Bloodrot and Cyber roll from standard Mutation Spinners and Gold Lucky Blocks. Roll rate is roughly 1 in 8,000 for each. Spinning a higher-rarity brainrot does increase the chance slightly because higher-rarity brainrots roll across the full mutation pool.

Name⇅	Multiplier⇅	Spawn %⇅	Type⇅
Neon	0x	—	Limited
Disco	11x	—	Limited
Cyber	11x	—	Limited
Rainbow	10x	1%Rare	Limited
Divine	10x	—	Limited
Cursed	9x	—	Limited
Radioactive	8.5x	—	Limited
Yin Yang	7.5x	—	Limited
Galaxy	7x	—	Limited
Lava	6x	—	Limited
Candy	4x	—	Limited
Bloodrot	2x	—	Limited
Diamond	1.5x	5%	Limited
Gold	1.25x	10%	Limited
Default	1x	—	Limited

Steal a Brainrot Mutations

What are Mutations?