Mutations list and multipliers
A mutation multiplies a buddy's income and value. Here is every mutation in the game, ranked by multiplier, with how to get it.
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All mutations ranked
| Mutation | Multiplier | How to get it |
|---|---|---|
| Plain | 1x | No mutation. |
| Rusty | 1.5x | Truck, sacks, eggs. |
| Frozen | 2x | Truck, sacks, eggs; frozen drop weeks make it 6x as common. |
| Starlit | 2.5x | Weather tag on clear starlit nights. |
| Golden | 3x | Truck, sacks, eggs (the most common mutation). Weekly Golden drops make it 2x as common. |
| Soot | 3.5x | Heists banked during a Blackout night event. |
| Prism | 3.5x | Weather tag from the city sky. |
| Glitched | 4x | Truck, sacks, eggs; glitched drop weeks make it 5x as common. |
| Stormy | 4x | Weather tag: buddies left outdoors in a storm. |
| Misty | 4.5x | Heists banked during a Fog night event. |
| Radioactive | 5x | Truck, sacks, eggs. |
| Tinsel | 5.5x | Garbage Strike night event only. |
| Minted | 6x | Big Heist: awarded to top contributors, one per event at most. |
| Crimson | 6.5x | Blood Moon Raid only (weekends). |
| Moonlit | 7x | Full Moon night event only. |
| Rainbow | 8x | Truck, sacks, eggs (the rarest base mutation); rainbow drop weeks make it 3x as common. |
| Aurora | 9x | Season mutation: appears only during its season (rare weather tag chance). |
| Hoarfrost | 9.5x | Season mutation: appears only during its season (rare weather tag chance). |
| Glacier | 10x | Season mutation: appears only during its season (rare weather tag chance). |
How the multipliers stack
A buddy's income is its base coins per second times mutation, size, merge level, trait, growth stage and Glow tier. Merge level multipliers are 1x, 2.2x, 4.8x, 10.5x, 23x for levels 1 to 5. Growth stages (Baby, Grown, Legend) multiply by 1x, 1.4x, 2x. A Glow is 3.5x and a Moonbeam 12x.
Ways to roll a mutation
- Each truck buddy has a 6% base chance, plus 1.2% per rebirth tier.
- Merging into level 2, 3, 4 or 5 rolls a mutation on a plain buddy at 8%, 15%, 25%, 40%. Merging keeps the better mutation.
- Hatching: every egg has its own mutation chance, from 5% to 35%, and a pristine uncracked egg rolls 1.5x as often.
- Night events (Full Moon, Blackout, Garbage Strike, Fog) and Blood Moon raids unlock event-only mutations.
Best mutations to chase
The base ladder tops out at Rainbow (8x). Event mutations go higher: Crimson 6.5x and Moonlit 7x, and each season adds a mutation above the last (up to 10x so far). A Rainbow Secret buddy is the biggest single earner you can build from the truck.
Frequently asked questions
What is the best mutation in Night Nabbers?
Of the permanent ones, Rainbow at 8x. Season mutations like Glacier (10x) are higher but only appear in their season.
Can I get mutations by merging?
Yes. Merging two plain buddies has a chance to mutate the result, and the chance grows with the merge level.