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// item · risk of rain 2

Rusted Key, in depth.

Common item (white). What the game says, what it really does, what each copy adds and what it pairs with.

// what it does

What it does.

Rusted Key
Common item (white)

Each stage, a hidden box with an item appears; opening it uses up one key. More keys, better items.

Game text: «A hidden cache containing an item (80%/20%) will appear in a random location on each stage. Opening the cache consumes this item.»

Stacking: More keys do not spawn more boxes: the number of boxes depends on how many players hold a key.

Watch out: The box starts appearing the stage after you pick up the key. In a group, spread the keys.

It has a void version: Encrusted Key. Pick that up and every copy of this item turns into it.

// per copy

What each copy adds.

1 copy2 copies3 copies5 copies10 copies
123510

Each copy adds the same.

// pairs with

What it pairs with.

Encrusted Key

its void version: the cache lets you pick void items.

57 Leaf Clover

better items in the box.

// how to get it

How to get it.

Drops from small chests, white printers and almost anything that gives items.

Needs unlocking first with the challenge «Keyed Up».

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// faq

FAQ.

What does Rusted Key do in Risk of Rain 2?

Each stage, a hidden box with an item appears; opening it uses up one key. More keys, better items.

What happens if you pick up several Rusted Key?

Stacking: More keys do not spawn more boxes: the number of boxes depends on how many players hold a key.Watch out: The box starts appearing the stage after you pick up the key. In a group, spread the keys.

How do you get Rusted Key?

Drops from small chests, white printers and almost anything that gives items. Needs unlocking first with the challenge «Keyed Up».

// more items

Other items in depth.

Soldier's SyringeTougher TimesLens-Maker's GlassesPaul's Goat HoofCrowbarTri-Tip DaggerArmor-Piercing RoundsBustling FungusTopaz BroochBackup MagazineEnergy DrinkSticky BombMedkitMonster ToothCautious SlugBison SteakFocus CrystalPersonal Shield GeneratorRepulsion Armor PlateUkuleleAtG Missile Mk. 1Hardlight AfterburnerPredatory InstinctsKjaro's BandRunald's BandHarvester's ScytheHopoo FeatherLeeching SeedBandolierRose BucklerWill-o'-the-wispFuel CellWax QuailOld War StealthkitBerzerker's PauldronInfusionDeath MarkShuriken57 Leaf CloverBrilliant BehemothSentient Meat HookCeremonial DaggerBrainstalksLaser ScopeAlien HeadUnstable Tesla CoilRejuvenation RackDio's Best FriendAegisShattering JusticeHappiest MaskSoulbound CatalystTitanic KnurlShatterspleenGenesis LoopMolten PerforatorCharged PerforatorPlanulaPearlShaped GlassGesture of the DrownedPurityTranscendenceBrittle CrownPolyluteLost Seer's LensesBenthic BloomPlasma ShrimpSafer SpacesEncrusted KeyNeedletickWeeping FungusPluripotent LarvaLysate Cell

Items in depth · Every item by rarity

Sources: the game's English text (name and description), the Risk of Rain 2 wiki (riskofrain2.wiki.gg: this item's page, read on 31 October 2026; numbers, stacking formula and notes) and the wiki's survivor pages. The plain-words text and the synergies are ours. Icons: Risk of Rain 2 (Hopoo Games / Gearbox).