Last checked: September 9, 2026

Storage Hunters: Open World Tier List (2026) — Best Mutations Ranked

By Money Lord — Founder & Editor | Updated: September 9, 2026

Mutations are the one part of Storage Hunters: Open World with a published, objective ladder — each one is a flat multiplier on what an item sells for. This tier list ranks the 33 mutations you can obtain as of September 9, 2026 straight by that multiplier, from Onyx at 175x down to Dirty at 0.8x, and separates the five that are now locked behind finished events.

Absolute Zero!'s auction sim held a median of 20,682 concurrent players across 28 radar samples between September 3 and September 9, 2026, in a band of 14,829 to 32,846. Pulled live at 20:14 UTC on September 9: 104,662,153 visits, 110,496 likes against 6,319 dislikes. The developer's description still names only four mutations — Gold, Diamond, Void and Rainbow — and prints no numbers, so every multiplier below comes from the community wiki's data module. Full stats sit on the game hub.

What Changed on September 5, 2026

An update went live at 19:00 UTC on September 5 — the start time on the developer's own Roblox event listing — so any mutation ranking written before that date is wrong in at least two places. Fourteen minutes later a wiki editor rewrote the data module's placeholder name = "Black", multiplier = "Unobtainable" to name = "Onyx", multiplier = 175; at 20:41 UTC Radioactive (10x / 10%) and Nuclear (50x / 0.5%) were added under a new "Nuclear Meltdown Event" category. At that same 19:00 boundary the Police Event's Roblox listing closed, taking Seized and Redacted with it — our September 4 revision of this page, committed while the event was still counting down, recorded that end time in advance.

How Mutation Multipliers Actually Work

A mutation multiplies an item's sale price, and when an item carries more than one the multipliers multiply together rather than adding — the wiki states the rule and works the example: Silver (2x) plus Gold (4x) sells at 8x, not 6x. That matters more than any single entry here, because it turns two mediocre rolls into a good one. Plenty of auto-generated pages get it backwards and say mutations add; the community's mutation calculator, built by two of that wiki's editors, reduces with a product, not a sum.

Two more multipliers ride on top. Condition scales the price toward a floor that depends on how expensive the item is, and grade from the Grading Store applies a flat band: Replica 85%, 1 Star 105%, 2 Star 135%, 3 Star 200%. On grade odds, the wiki and the developer's own Lucky Grading pass description agree on exactly two figures — Replica 22% and 3 Star 5%, the latter rising to 10% with the pass — and disagree in the middle, where the wiki says 1 Star 38% / 2 Star 35% and the pass says 30% / 43%. We publish the two they agree on and nothing else.

S Tier — 25x and Above

Onyx tops the game at 175x, and it is not a roll. It unlocks once, permanently, via The Onyx Contract from the NPC Mike in the Back Alley: the contract opens at 1,575 Luck and asks you to find 100 Silver, 75 Gold, 50 Corrupted, 35 Diamond, 25 Gem, 20 Chrome, 15 Hologram, 10 Void, 5 Secret and 2 Rainbow items — a checklist that walks the entire standard ladder. Mike also runs a repeatable Bank heist and a jailbreak chain worth +7% Luck.

Below it, Rainbow at 100x is the best mutation you can actually roll. Secret and Nuclear tie at 50x, Void sits at 35x and Caustic at 30x. Secret coats the item in intense red with pale-red electrical arcs; Void is one of the four the developer names in the game description.

Only two of those five have a published rate, and both are weather-gated: Caustic at 0.5% during Acid Rain and Nuclear at 0.5% during a Nuclear Meltdown, the only top-end mutations you can farm deliberately. The wiki's Standard Mutations table has a multiplier column and nothing else, so nobody can quote real odds on Rainbow, Secret or Void, and we won't invent a chance column that doesn't exist. The closest honest measure of the top end is the badge ledger: 592 accounts hold Find Every Mutator against 22,420,473 holding the join badge, pulled September 9, 2026.

A Tier — 10x to 15x

Six mutations land in this band. Hologram leads at 15x from the standard pool with no published chance; Dune pays 12.5x at 0.2% during Sandstorm, the best documented multiplier-per-chance trade in the event roster; Chrome gives a flat 12x.

Timeless also pays 12x, but from the Time Capsule behind the Shopping Mall rather than an auction roll. That machine wants $100,000 net worth and a fee of 5 to 250 diamonds scaled to the item's rarity and existing mutations, then rolls every five minutes until one of its four mutations lands. Timeless is 0.025% per roll, or 0.8% of all capsule results. Gem and Radioactive close the tier at 10x — Gem is the subtle one, flashing four-point stars rather than recolouring the item, and Radioactive is the common half of the Nuclear Meltdown pair at 10% while the meltdown runs.

B Tier — 5x to 8x

Eight mutations sit in the middle. Diamond leads at 8x and does something none of the others do: since version 0.4.1 on July 6, 2026, mutations and grades on a Diamond Safe raise the number of diamonds it awards, so a mutated Diamond Safe pays twice.

Perfect at 7.5x is the tier's trap. You can't roll it: it comes only from washing an item that already carries Mint, on a Luck-based chance, and Mint alone is a 1x mutation that adds a customer tip and nothing else. Most players sell Mint items on sight, throwing away the only route to a 7.5x in the game.

Corrupted (6x) comes from the standard pool, Shocked (6x) from rain at a documented 0.29%. Then four fives: Acid at 10% during Acid Rain, the highest published rate of any event mutation worth chasing; Ancient at 0.1% per Time Capsule roll (3.2% of capsule results); Firefly at 0.1% inside a Moonlit event that lasts four minutes; and Fossil, which luck can't buy — it only appears while you wear an accessory whose passive grants it.

C Tier — Below 5x

Thirteen mutations pay under 5x. Dirty is the only one that makes an item worth less, at 0.8x — but a Dirty item can be washed once for a shot at Pure (1.5x) or Spotless (2.5x), or nothing. The wiki says outright those odds aren't confirmed, so treat the wash as a free coin flip.

Cobwebbed deserves a warning. At 1.2x it's the weakest Time Capsule result and also 80% of everything the capsule produces, so paying up to 250 diamonds for a capsule roll is, four times in five, paying for a 1.2x. Those shares all come from one published figure: the chance of getting any capsule mutation on a given roll is 3.125%, and each mutation's slice of that total is its final chance.

The rest are filler that stacks: Gold (4x), Sandy (2.25x, 3.5% in Sandstorm), the flat doubles Silver, Huge and Tiny, Antique (2x, 16% of capsule results), Moonlit (1.5x at 4%) and Wet (1.4x at 4.5%). None is a jackpot alone, but two on one item is an 8x — the whole argument against quick-selling low rolls.

Full Mutation Tier Table — All 33 Ranked

Every multiplier below was read from the wiki's mutation data module on September 9, 2026. The chance column says "not published" wherever the wiki gives no figure, which is most of the standard pool.

Two Museum marks are not value multipliers and get no tier: Showcased (+50% Luck) and Artifact (+100% Luck). Both apply only while the item is on display — the mark stays on the item permanently after you withdraw or sell it, the Luck does not.

Mutations You Can No Longer Roll

Five mutations are locked behind finished events. Three were exclusive to the Alien Invasion — Probed (4x at 4.5%), Abducted (10x at 1%) and Extraterrestrial (25x at 0.25%) — which the wiki dates to August 16–30, 2026 and marked ended in an edit timestamped August 30 at 00:47 UTC.

Two more joined them on September 5: Seized (15x) and Redacted (1.25x), from the Police Event. Seized would still be A tier and Extraterrestrial S tier had either survived. Two caveats: the wiki has not yet flagged its Police Event section as closed, and its data module still files both under the Alien Invasion category — a copy-paste artefact, since the Seized page itself names the Police Event. Expect other sites to keep listing them as live. The Police Station and its jail are permanent map content; only the event ended. Our update log covers the patch history.

One entry moved the other way: Black, which we listed on September 4 as a files-only mutation with no number, was the Onyx placeholder and is no longer a separate mutation.

The Second Ladder: Mutated Luck

Sale value isn't the only axis. Mutated Luck is a Premium Authentication — a Head-slot stat only a Premium Certificate of Authenticity can roll — granting Luck from the strongest mutation on the accessory you wear. That gives the standard pool a second published ladder, and it's why an Onyx accessory is worth wearing rather than selling.

Note which standard mutations are missing: Huge, Tiny, Mint and Dirty appear nowhere, so a 2x Huge accessory grants no Luck while a 2x Silver grants +5%. The ladder also skips every event, washing and capsule mutation.

How to Raise Your Mutation Odds

Gavel Trophies are the main lever: won from auctions, displayed on your plot, they raise the chance auction items turn up mutated at all. You can show three, or four with the Extra Gavel Trophy pass (449 Robux, created July 17, 2026). Each trophy holds up to three mutations, caps at a +250% mutation boost, and trophies carrying the same mutation stack together. A trophy carrying one of the four Time Capsule mutations also improves your odds of rolling that same one out of the capsule.

Gavel Loadouts save an arrangement and swap it back in one tap via the "+" button next to the Luck stat — first free, second 200 diamonds, third 300 diamonds. Grading a Luck Drink to 2-Star or 3-Star increases its duration, so run drinks through the Grading Store first; the money guide covers the spend order.

What Could Change This List Next

A Wild West event sits on the experience's own Roblox event listing, September 12 at 19:00 UTC to September 26, billed as a two-week limited event with "many mutators to be found". It has no wiki page and no named mutations yet, so we are not guessing at entries — but on the Nuclear Meltdown precedent, expect new rows within hours of that start, and expect them to be time-locked the way Seized was.

How We Ranked These Mutations

This ladder isn't opinion. Mutations carry a published flat multiplier, so the sort is that multiplier, with tier breaks at 25x, 10x and 5x. Ties share a tier and we flag which is event-locked; anything you can't currently obtain is listed separately rather than ranked.

Every figure came from the community wiki's Mutations page and the data module behind it, read on September 9, 2026. Its history is why we trust it: named editors, granular commits like "Fix Nuclear's chance typo (0,5% → 0.5%)", and values left pending until someone confirms them. Event timing and the September 5 update were checked against the Roblox virtual-events feed for universe 10261267004, badge and game-pass creation dates, and the experience's own page. Two single-game sites ranking for this query publish headline multipliers with no source, both registered through one registrar behind Cloudflare weeks after the June 2, 2026 launch, so we link neither.

More Storage Hunters

Start at the Storage Hunters: Open World hub. Code status lives on the codes page — we keep no codes table here — auctions and spend order in the free Robux guide, patch history in the update log, and a head-to-head in Storage Hunters vs Car Flipper. Other flip-and-grow economies: Grow a Garden and Steal a Brainrot.

Frequently Asked Questions