Mutations
Full mutation tier list: Gold 1.5x through Rainbow 40x and Astral 50x, plus event rows (Fall / Nerd 45x, Block Cup 38x, Carnival 37x).
How mutations work
Mutations multiply a Brainrot's base $/s on top of rarity. A $5/s Common with Rainbow at 40x earns $200/s; Astral at 50x from Eternal / Eternal Plus beats Rainbow on raw mult. One mutation per unit. Stack Kick Power into deeper zones, then Server Luck, before you burn Mega Luck Potion at 5x.
Deep links: Luck, Kick Power.
Mechanics & Rules
One mutation per unit at impact. Multipliers apply to base $/s only after you retrieve the Brainrot before the tsunami. Portal rerolls (when live) happen once on the return path — Speed ~85+ keeps Hacked / OG rolls alive.
- One mutation: each unit gets at most one trait at drop; no post-processing add-ons for stored units.
- $/s amplify: multipliers hit base cash. Percentage units (e.g. Dragons) keep their % bonus; mutation raises cash value underneath.
- Spawn on impact: the roll happens when the Lucky Block shatters — retrieve and place it or it never pays.
- Distance bias: deeper zones raise the odds of high-tier mutations.
Total income = Base Unit Production × Mutation Multiplier
Mutation tier list
Regular zone RNG rows climb Gold at 1.5x through Rainbow at 40x and Astral at 50x. Event and Weather Machine rows add Fall and Nerd at 45x, Block Cup at 38x, Carnival at 37x, and archived Jungle or Frozen at 40x. Patch history lives on Events and the update guides.
Regular mutations table
Gold rolls about 1 in 10 for 1.5x, Diamond 1 in 25 for 2x, Plasma 1 in 33 for 4x, and Molten 1 in 125 for 6x. Rainbow sits at 40x around 1 in 20,000. Astral is 50x from Eternal and Eternal Plus zones, stronger than Rainbow on raw multiplier. Deeper Kick Power unlocks the rarest rows.
| Mutation | Multiplier | Chance / Source | Effect |
|---|---|---|---|
| Gold | 1.5x | 1/10 | Increases your brainrot's earning rate and sale value by 1.5x. |
| Diamond | 2x | 1/25 | Increases your brainrot's earning rate and sale value by 2x. |
| Plasma | 4x | 1/33 | Increases your brainrot's earning rate and sale value by 4x. |
| Molten | 6x | 1/125 | Increases your brainrot's earning rate and sale value by 6x. |
| Radioactive | 8x | 1/333 | Increases your brainrot's earning rate and sale value by 8x. |
| Shadow | 12x | 1/2000 | Increases your brainrot's earning rate and sale value by 12x. |
| Electrified | 16x | 1/5000 | Increases your brainrot's earning rate and sale value by 16x. |
| Rainbow | 40x | 1/20000 | S-Tier regular mutation (Update 7). Still very rare; prismatic VFX. Example: a Rainbow Trilaon delivers a clean 25M/s base cash generation. |
| Astral | 50x | Eternal / Eternal Plus Zone | God-tier #1 active meta (Update 7). Rarer and stronger than Rainbow right now. Example: Astral Beluga Beluga at Level 75 cap yields 426T/s. Drops in Eternal and Eternal Plus. |
Event mutations table
Weather Machine, Volcano, Block Cup shop, and limited windows add exclusive multipliers while live. Fall Update (Oct 3–10 PT) rolls Fall at 45x; Nerd is a World 2 craft at 45x after three Plasma-or-better matches plus 350 Score and a 30-minute wait; Block Cup is 38x from shop Lucky Cups; Carnival about 37x; Candy week archived near 0.5%. Read live Index cards for event percents.
| Mutation | Multiplier | Chance / Source | Effect |
|---|---|---|---|
| Virus | 10x | Legacy | Legacy mutation from the old Virus Machine era. Update 3 replaced that system with the Weather Machine, existing Virus units may remain, but new Virus rolls are no longer the primary path. |
| Void | 10x | - | Increases your brainrot's earning rate and sale value by 10x. |
| Enchanted | 12x | Witch Event (18%) | Weather Machine event mutation from the Witch Event. Rolled on Enchanted Lucky Blocks during the 10-minute weather window. |
| Wet | 16x | Flood Event (14% · 10% Update 6) | Weather Machine event mutation from the Flood Event. Launch rate was 14%; Update 6 lowered it to 10%. Recipe: Sigma Boy (Godly) + Mythic + Orcalero (Godly) + Epic. |
| Alien | 22x | UFO Event (10%) · 5% Index | Weather Machine event mutation from the UFO Event. Update 7 clocks Alien at a 5% hatch rate via the Game Index. |
| Bacon | 30x | Bacon Event (6%) | A-Tier visual variant (Update 7), spawns classic Roblox Bacon Hair onto Brainrots. Weather Machine Bacon Event (6%); recipe: Celestial + Hacked + Common + OG. Example: Bacon Guiro Digitale ~16M/s scaled. |
| Phantom | 25x | Phantom Event (3%) | Elite event variant (Update 7 scaling). Baseline yields from 19M up to 280T upon max base enhancement. Launched at 35x; lowered to 25x in Update 6. Sacrifice 4× Celestial Brainrots for a 10-minute Phantom Event window. |
| Volcanic | 35x | Volcano Event (unlock first) | Update 5 event mutation at 35x. Unlock for 20 lava rocks at the shard upgrade area, then roll Volcanic Lucky Blocks during the 10-minute eruption cycle. Players can vote for Volcano during Update 7 server voting. |
| Heavenly | 32x | Heavenly Event (3%) | Update 7 weather variant from server voting during Admin Abuse. Players vote between Volcano and Heavenly events; 3% conversion rate on exclusive mutated Lucky Blocks during the window. |
| Block Cup | 38x | Lucky Cup blocks (Block Cup Shop) | Update 8 event mutation, top shop-route multiplier at launch. Rolls on six Lucky Cup block brainrots in the Block Cup Shop: Castlino Fortini, Bambu Sahur, Bottellini, Beluga Beluga, Astro Tim, and Smelloni Papayoni. |
| Carnival | 37x | Carnival Event (3%) | Update 8 Weather Machine mutation. Carnival lucky blocks roll at ~3% during the weather window, sacrifice Tralaledon + Anpali Babel + Ketupat Kepat + Espresso Shockantoni, or spend 999 Robux to summon. Sits just under Block Cup (38x) on raw multiplier. |
| Undead | 35x | Zombie Apocalypse Event (4%) | Update 9 event mutation from the Zombie Apocalypse weather window, 4% Undead lucky block chance. Sits between Phantom (25x) and Heavenly (32x) on raw multiplier; strong on high-base Celestial pulls (e.g. Tralaledon ~$21.8M/s scaled). |
| Jungle | 40x | Jungle Event (0.5% · archive) | Update 12 event mutation from the Jungle Event window (Jul 11-19, 2026 PT, ended). Jungle lucky blocks rolled at ~0.5% during the 15-minute jungle bursts. Ties Rainbow at 40x on raw multiplier; existing Jungle units keep the trait after the archive. |
| Frozen | 40x | Frozen Event (0.5% · archive) | Update 14 event mutation from Frozen ❄️ (Jul 25 - Aug 1, 2026 PT, ended). Frozen bursts ran 10 minutes each hour; lucky blocks converted to Frozen at ~0.5% during the window. Ties Rainbow and Jungle at 40x on raw multiplier, existing Frozen units keep the trait after the archive. |
| Nerd | 45x | Nerd Machine recipe | World 2 craft mutation (45x). Submit three matching Brainrots that each have Plasma or better, spend 350 Score, wait 30 minutes at the Nerd Machine (Nerd Study NPC), then collect the Nerd unit. Not a random kick roll. |
| Fall | 45x | Fall Update (Oct 3–10 PT) | Fall Update event mutation (45x cash). Ties Nerd on raw multiplier but rolls during the Fall week rather than crafting. Separate from tree Leaf Mutations upgrades. Existing Fall units keep the trait after the week ends. |
| Candy | confirm Index | ~0.5% (Candy week) | Update 21 Candy hunt (Sep 19–26, 2026 PT, ended). ~0.5% while Candy Man / Gumball loops were live. Multiplier is not locked here — read the live Index card. Existing Candy units keep the trait after the archive. |
Event schedules and recipes: Events, How to Get Mutations, Update 6.
Maximizing Mutation Chances
Stack zone distance first (OG ~900x+ luck floor), then Server Luck (shop cap 16x), then personal potions. Perfect Kick extends the same run. Full formula on the Luck wiki.
- Kick into Legendary+ zones with a Perfect Kick for distance and quality bias.
- Open during Server Luck (2x–16x) and personal potions — formula and sources on the Luck wiki.
- Early game: Gold/Diamond for capital. End game: chase Rainbow/Astral with power + luck, not blind kicks.
Survival & Risk Management
High-tier VFX is worth the sprint home. Hacked Zone waves need about 85+ Movement Speed so you can fetch before the tsunami voids Rainbow / Astral rolls.
- High-tier VFX (Radioactive smoke, Rainbow trails): sprint. Low glow with a close wave: abandon.
- Hacked / Impossible waves: Movement Speed 85+ for a reliable escape.
Regional Layout Strategies
Replace by multiplier value as zones deepen. Endgame mixes high-mult OG slots with Dragon percent units instead of stacking commons.
- Early (Rare–Epic): fill slots; swap into Gold/Diamond as they drop.
- Mid (Legendary–Mythic): prefer Plasma 4x+; an 8x Radioactive from a lower zone often beats a plain in-zone unit.
- Advanced (Divine–Hacked): keep Molten/Radioactive anchors; only replace for a clearly better multiplier.
- OG endgame: ~60% highest OG multipliers (Rainbow, Electrified, Radioactive…), ~40% Dragon % units.
FAQ
Can I "reroll" a unit to get a mutation later?
No. Mutations only generate at impact. Limited-time Reroll events sometimes appear, but there is no permanent way to add a mutation to a unit already at base. Update 13 portals only reroll the Brainrot you are carrying on the tsunami return path.
Why did I get a "None" mutation in the OG Area?
Zones set the loot pool and luck floor, but mutations are still RNG. High luck raises odds a lot — it never guarantees a roll.
Does the multiplier affect Rebirth points?
No. Multipliers only affect cash production. Rebirth gates are Kick Power thresholds, not mutation multipliers.
Will I keep the unit if the Tsunami kills me?
No. Die before the shore and the unit is gone unless you spend Robux for Instant Revive.
Is Radioactive the same across all zones?
The 8x multiplier is the same; the base $/s is not. A Hacked Zone Radioactive is worth far more than a Rare Zone one.
Is Virus still obtainable after Update 3?
The Weather Machine replaced the Virus Machine. Treat Virus as a legacy trait; farm current meta via zone luck, Weather events, Eternal/Phantom, or Volcano.
What graphics settings are recommended?
Set Graphics Quality to 5+ so particle effects (Radioactive smoke, Rainbow trails) stay visible for fetch-or-abandon decisions.