All Mutations and Multipliers in Storage Hunters: Open World

When you win a storage auction and start pulling out the items inside, some of them roll with a mutation — a special effect that changes what the item sells for. Most mutations push the value up, a few push it into absurd territory, and exactly one drags it down. The single mechanic that trips people up is the stacking math: two mutations on one item don’t multiply together, they add. Get that right and you can read any find at a glance.

What mutations do to auction items

Mutations are random effects that appear on items from storage auctions, and each one applies a fixed multiplier to that item’s base sell value. Roll Gold on a good piece and it’s worth four times as much; roll nothing and it sells flat. The whole system is a value dice-roll layered on top of whatever you already won.

Every mutation and its multiplier

That’s 24 mutations in total with Black counted, even though Black can’t currently be obtained. The low end runs from Dirty up through the crowd of 2x rolls (Silver, Huge, Tiny, Antique), the mid tier stacks Spotless, Gold and the 5x pair, and then the numbers climb hard through the rare rolls. Rainbow sits at the top around 75x, but that exact figure isn’t nailed down the way the rest of the table is, so treat it as the ceiling rather than a fixed number.

Which rolls make the most money

The money rolls are the rare ones, and they’re where a single item can out-earn an entire auction. Void (35x), Secret (50x) and Rainbow (around 75x) are the jackpots, with Hologram (15x), Chrome and Timeless (12x each), Gem (10x) and Diamond (8x) right behind them. The whole 6x tier — Corrupted, Wet and Shocked — is the point where a find stops being ordinary and starts being worth holding.

The roll to actively avoid is Dirty, because at 0.8x it’s the only mutation that shrinks your payout — a Dirty item is worth less than the same item clean. That said, don’t dismiss the smaller positive rolls out of hand. A humble 2x or 3x on a high base-value item can beat a big multiplier sitting on junk, so always weigh the mutation against what the item is actually worth before it rolls.

Video help

How stacking and condition set the sale price

The combined mutation multiplier isn’t the whole story, though. The item’s base value and its condition both still shape the final sale price, and the order of operations matters — the mutation multiplier is applied before the condition curve, not after. On top of that, values above $1,000 run into a 60% hard cap, so the biggest-ticket items don’t scale as cleanly as the raw multiplier suggests. If you ever need to work out a mutation you can’t identify, you can back it out from three numbers on a single-mutation item: its exact sell price, its 100% max value, and its current condition percentage.

Raising your odds of a mutated item

Mutations come down to luck when you win an auction and check what’s inside, but a few things tilt the odds in your favor before you ever open a locker. Push your Luck stat, seed the room with trophies, and keep an eye on the sky.

Mistakes that cost you profit

The most expensive mistake is doing the stacking math wrong — multiplying combined mutations instead of adding them makes you overvalue items and pay too much to win them. Right behind it is chasing Black, which is currently unobtainable, so any time spent farming for it is wasted. Don’t treat Rainbow‘s exact multiplier as settled either, and never overpay for a Dirty item just because it looks rare — at 0.8x it’s a guaranteed loss on the flip.

One last trap: this is a self-contained value system, and its rules don’t carry over from other Roblox mutation games. Copying multipliers or stacking behavior from a different title will steer you wrong, so stick to the numbers in the table above.