All 24 Storage Hunters Mutations Ranked

Mutations are sell-price multipliers that roll on items in Storage Hunters: Open World. When an item is mutated, a visual marker (a colour gradient, a glow, an oversized rendering) flags it on the shop shelf, and the multiplier is applied to the item's base price at the moment of sale. A Cheeseburger (base $0.10) with a Void mutation (35x) sells for $3.50; a Gangster Dominus (base $15,000) with the same Void mutation sells for $525,000. The multiplier system is the single biggest income driver in the game once you push past the four-area progression baseline.

Twenty-four mutations are catalogued. Twenty have community-confirmed multipliers ranging from 0.8x (Dirty, the only negative) to 35x (Void, the only Legendary). The other four — Black, Huge, Rainbow, Secret — appear in the roster but their multipliers are not publicly documented at the time of writing. Black is also flagged as currently unobtainable in the entity record. Mutations stack additively rather than multiplicatively, which is the most-misunderstood mechanic in the entire system and the one this section spends the most time on.

The single most important thing to understand about mutations is that they stack additively, not multiplicatively. When an item rolls more than one mutation, the multipliers add into a single combined multiplier and that combined number is applied at sell time. The mutation-strategy guide states it directly: "When an item rolls multiple mutations, the multipliers ADD — they do not multiply. A Silver (2x) plus Gold (4x) item sells for 6x base, not 8x."

The canonical worked example: a Scrap Dominus (base sell price $565) with a single Void mutation (35x) lands at $19,775 at the shop counter. Stack the Void with a Gold (4x) and the math is $565 × (35 + 4 − 1) = $21,470, not $565 × 35 × 4 = $79,100. The −1 in the formula handles the fact that the first 1x is the base price itself, not a mutation contribution. Players who skip this step routinely overestimate stacked payouts by an order of magnitude.

Mutations apply at sell time only — the auctioneer's locker valuation shows base prices, and the multiplier kicks in when the item is moved from your shop shelf to a customer. This is why the Mutation Stacker Calculator is genuinely useful: it loads all 24 mutations and the catalogued item base prices, lets you assemble any stack, and shows the final sell value before you commit time to chasing the rolls in-game.

Per-mutation value comes from two axes: the absolute multiplier (higher is better) and the rarity (lower drop rate makes the chase longer). Drop rates are not publicly documented at the time of writing — the mutation-strategy guide explicitly flags this as a gap — so the practical chase-priority list below ranks by absolute multiplier and tier visibility, not by expected-value math.

Tier 1 chase target: Void (35x, Legendary). The single highest multiplier in the roster, sitting alone in its tier. Community estimates suggest Legendary tier (Void) is significantly rarer than Epic tier, but exact drop rates are not publicly documented as of June 2026 — treat any Void roll as a windfall, not as a planned outcome.

Tier 2 chase targets: the Epic bracket (Hologram 15x, Chrome 12x, Timeless 12x, Gem 10x).These four cover the next-best per-roll payouts. Hologram's cyan-monospace visual is the easiest to identify at a glance; Chrome and Timeless tie at 12x but read visually differently (Chrome's mirror gradient vs Timeless's constant glow). Gem rounds out the Epic floor at 10x.

Tier 3 chase targets: the Rare cluster (Diamond 8x, Corrupted/Shocked/Wet 6x). Useful as stacking partners on high-base items. A Diamond + Corrupted stack on an Industrial Robot Arm produces a meaningful absolute dollar gain even before any Epic or Legendary roll lands on top.

What to avoid chasing: rare multipliers on low-base loot. A Void roll on a $0.10 Cheeseburger pays $3.50 — interesting trivia, not income. Save high-tier mutation chases for high-base targets (Shipyard machinery, Exclusive accessories).

Mutations are rolled on items that come out of auction lockers. Whether and what a given item mutates into is determined by an in-game roll system whose specific mechanics are not exhaustively documented in publicly available community sources at the time of writing — the mutation-strategy guide flags this as one of the largest open documentation gaps in the game.

What is known: mutations are area-agnostic. The same mutation system rolls in Junk Yard, Back Alley, Farmyard, and Shipyard auctions; there is no documented evidence that any specific mutation is locked to a specific area. The difference between areas is base-price-driven — a Hologram (15x) roll on a Shipyard Industrial Robot Arm produces a much larger absolute dollar gain than the same Hologram on a Junk Yard Cheeseburger.

The practical strategy is volume + targeting. Volume because individual mutation rolls are probabilistic and you cannot meaningfully influence which mutation lands. Targeting because where you roll the dice matters: lockers from areas with the highest base prices (Shipyard) amplify every mutation hit, and Exclusive-class accessories within those lockers (Gangster Dominus, Bear Cap, C4 Wristband) have the highest base prices in the entire item catalogue. The Mutation Stacker Calculator at /tools/mutation-stacker models the math for any stack you can imagine on any catalogued item.