Strongbox

Strongboxes are an encounter found in both the campaign and endgame. Strongboxes are a type of chest that can have modifiers. These chests may be crafted upon with currency items. When a strongbox is opened, a dark mist will flow out of them and summon packs of monsters. Once all the monsters are slain, the chest will open and drop its rewards.

Mechanics

Strongboxes can have most currency items applied to them to alter its modifiers. The modifiers on a strongbox will add or improve the items it drops or empower monsters within.

Rare Strongboxes can have up to 3 prefixes and suffixes by default. They can have up to 4 prefixes and suffixes after certain Atlas passives have been allocated. In addition, certain Atlas passives will enable certain modifiers to be able to be rolled on strongboxes.

Corrupting a strongbox with a Vaal OrbVaal OrbStack Size: 20Modifies an item unpredictably and Corrupts itRight click this item then left click an item to corrupt it. Corrupted items cannot be modified again. results in all items being Corrupted.

Certain mechanics may allow a strongbox to be openable again. To do so, the player must hold the left click button down on the strongbox.

The loot from strongboxes is not affected by rarity modifiers from your gear, though they are affected by strongbox-specific modifiers. Strongboxes innately gain 50% more item quantity and rarity starting from Act 4[confirmation needed], and 100% more in endgame.

Types of strongboxes

Type	Items contained
Strongbox	a mix of items
Arcane Strongbox	Foci, Sceptres, Staves, Wands
Armourer's Strongbox	Armour (equipment)
Blacksmith's Strongbox	Martial weapons
Cartographer's Strongbox	Precursor tablet, Maps
Large Strongbox	a mix of items with a higher quantity than a normal strongbox
Ornate Strongbox
Researcher's Strongbox	Currency items
Jeweller's Strongbox	Rings, Amulets, Jewels

Abyss strongboxes

These strongboxes have a chance to replace an Abyssal Trove while Ghastly Relics is allocated.

Type	Items contained
Abyssal Arsenal Strongbox	weapon items and jawbone preserved bones
Abyssal Armoury Strongbox	armour items and rib preserved bones
Abyssal Coffer Strongbox	currency
Abyssal Cache Strongbox	a mix of items
Abyssal Trove Strongbox	a mix of items

Unique strongboxes

Name	Modifiers	Flavour text	Image	Notes
Ixchel's TormentBlacksmith's Strongbox	Guarded by 31 packs of MonstersGuarded by abberations of ChaosContains an additional Unique Item, Corrupted with <random corruption outcome>Corrupted	His Trials will end when Time does...and then, they will begin again.		Contains monsters from Trial of Chaos.The random mod can be one of the following corruption outcomes: ...with an Enchantment ...with unpredictable mod ranges ...with an additional Socket
Ogham's LegacyLarge Strongbox	Revives the fallen monster (3-6) timesFallen monster gains an additional modifier each time it revivesContains no other Items	The cycle of vengeance never ends... even in death.		The monster corpse found on the strongbox will revive multiple times.Proccing chance for strongbox to be reopenable allows the monster to gain even more modifiers.Rare monster with 14 mods from reproc
The Rain Festival BeetleJeweller's Strongbox	Drops (3-5) additional Jewels(100-150)% more Rarity of Contained Items	During the first rain of each year, rich and poor alikechased the Beetle through the flooding streets of Keth,and its bounty was shared equally by all.		Clicking the strongbox will turn it into a monster called The Rain Festival Beetle that runs away from the player. Defeating it will drop items that would be contained in the strongbox, including 3-5
Ventor's ContraptionResearcher's Strongbox	Can be reopened 4 timesGold cost increased by 950% to 1050% each time openedCosts 200 Gold to openDrops items from Ventor's Trove	Prospero smiles upon you, fair traveller.Step close, take a chance, and try fortune's fare!		Clicking the strongbox spends your current Gold to roll a random currency reward which can range from Scroll of WisdomScroll of WisdomStack Size: 40Identifies an itemRight click this item then left cl
Legacy of the OrderStrongbox	Contains a Twilight Reliquary KeyTwilight Reliquary KeyThey knew the truth, but had no choiceGenerations hence, perhaps, one day,there would be a chanceOpen a Reliquary portal by using this item at Th			Has a chance to replace unique strongboxes while Stolen Relics from Jado's Spycraft is active

Strongbox modifiers

Prefix

Name	Generation Type		Stats	Spawn Weighting
Chaotic	Prefix	1	Casts Chaos Barrages(10-20)% more Rarity of Contained Items	strongbox_robot_rare_guard 0default 1
Scorched	Prefix	1	Summons Volatile Crags(10-20)% more Rarity of Contained Items	strongbox_robot_rare_guard 0default 1
Arctic	Prefix	8	Freezes you when activated(10-20)% more Rarity of Contained Items	strongbox_robot_rare_guard 0default 1
Vibrating	Prefix	1	Casts Lightning Storms(10-20)% more Rarity of Contained Items	strongbox_robot_rare_guard 0default 1
Intimidating	Prefix	10	Guarded by (2-4) packs of Magic Monsters	strongbox_robot_rare_guard 0default 1
Crowded	Prefix	1	Guarded by (4-8) packs of Monsters	strongbox_robot_rare_guard 0default 1
Menacing	Prefix	35	Guarded by (1-2) packs of Rare Monsters	strongbox_robot_rare_guard 0default 1
Frosted	Prefix	1	Cursed by Winter Hags	strongbox_robot_rare_guard 0default 1
Augmentation	Prefix	1	Contained Orbs of Augmentation have a 10% chance to be upgraded	strongbox_robot_rare_guard 0strongbox_can_roll_currency_replacements 1
Chaos	Prefix	1	Contained Chaos Orbs have a 10% chance to be upgraded	strongbox_robot_rare_guard 0strongbox_can_roll_currency_replacements 1
Exalted	Prefix	1	Contained Exalted Orbs have a 10% chance to be upgraded	strongbox_robot_rare_guard 0strongbox_can_roll_currency_replacements 1

Suffix

Name	Generation Type		Stats	Spawn Weighting
of the Exceptional Armourer	Suffix	75	Contains an additional Exceptional Armour Item	strongbox_robot_rare_guard 0armourer_strongbox 1
of the Greater Exceptional Armourer	Suffix	75	Contains (2-3) additional Exceptional Armour Items	strongbox_robot_rare_guard 0armourer_strongbox_highertiermod 1
of the Exceptional Mage	Suffix	75	Contains an additional Exceptional Caster Weapon	strongbox_robot_rare_guard 0caster_strongbox 1
of the Greater Exceptional Mage	Suffix	75	Contains (2-3) additional Exceptional Caster Weapons	strongbox_robot_rare_guard 0caster_strongbox_highertiermod 1
of the Exceptional	Suffix	75	Contains an additional Exceptional Item	strongbox_robot_rare_guard 0basic_strongbox 1
of the Greater Exceptional	Suffix	75	Contains (2-3) additional Exceptional Items	strongbox_robot_rare_guard 0basic_strongbox_highertiermod 1
of the Exceptional Warrior	Suffix	75	Contains an additional Exceptional Martial Weapon	strongbox_robot_rare_guard 0martial_strongbox 1
of the Greater Exceptional Warrior	Suffix	75	Contains (2-3) additional Exceptional Martial Weapons	strongbox_robot_rare_guard 0martial_strongbox_highertiermod 1
of Runic Power	Suffix	5	Contains (1-2) additional Runes	strongbox_robot_rare_guard 0currency_strongbox 1
of Greater Runic Power	Suffix	5	Contains (5-7) additional Runes	strongbox_robot_rare_guard 0currency_strongbox_highertiermod 1default_highertiermod 0
of the Barya	Suffix	24	Contains 1 additional Djinn Barya	strongbox_robot_rare_guard 0currency_strongbox 1

Related atlas passive skills

The following atlas passive skills are related to strongboxes:

Name	Stats
Azmeri Spirit and Strongbox Chance	20% increased chance of Strongboxes20% increased chance of Azmeri Spirits
Cartographer's Plunder	Strongboxes in your Maps have 150% increased chance to be Cartographer's Strongboxes
Corruption Areas: Strongbox Chance	Corruption Areas have 60% increased chance of Strongboxes
Craftsman's Creed	Allows Blacksmith's, Armourer's and Basic Strongboxes to roll Prefix Modifiers that cause dropped items to require particular Attributes
Mountain Biome: Strongbox Chance	Mountain Areas have 60% increased chance to contain Strongboxes
Noble's Plunder	Strongboxes in your Maps have 150% increased chance to be Ornate Strongboxes
Researcher's Plunder	Strongboxes in your Maps have 150% increased chance to be Researcher's Strongboxes
Shrine and Strongbox Chance	20% increased chance of Shrines20% increased chance of Strongboxes
Strongbox and Shrine Chance	20% increased chance of Shrines20% increased chance of Strongboxes
Strongbox Chance	40% increased chance of Strongboxes
An Appropriate Vault	Strongboxes have 2% increased Item Quantity per Modifier

Version history

Version	Changes
0.5.0	Lowered the base chances for Essences, Azmeri Spirits, Shrines, Strongboxes, Summoning Circles and Rogue Exiles appearing in Maps somewhat due to the much larger increase now available on the Atlas Tr
0.3.0	Unique Strongboxes now have their own unique minimap icons. Added a Minimap icon to The Rain Festival Beetle monster (from the Unique Strongbox).
0.2.1	The Lightning Storms Strongbox modifier now causes fewer lightning bolts, and its lightning bolts have improved visuals effects.
0.2.0h	Added quick-use Currency buttons to Strongboxes and monsters imprisoned in Essences. These buttons will only be visible if you have the currency items in your inventory.
0.2.0g	Strongboxes have increased Item Quantity and Item Rarity, guarantee a Rare item as well as getting a further +50% more Item Quantity and Item Rarity in Cruel, and +100% more in Endgame. Researcher's S
0.2.0e	Strongboxes now pause Delirium fog when they are opened, in addition to the pause they already had on completion.
0.2.0d	The Rain Festival Beetle now has Drops 3-5 additional Jewels (from 5-7) and 100-150% more Rarity of Contained Items (from 50-100%).[Undocumented]
0.2.0	Introduced 4 Unique Strongboxes - special chests with unique encounters. Strongboxes now spawn slightly more packs of Monsters in Maps. Strongboxes can now appear in certain Act 1 areas. (Hotfix 4) Mo
0.1.1c	Added Minimap Icons for Strongboxes.
0.1.1	A number of Maps now have 50% more chance to contain Strongboxes. Maps that are only exclusively found in Biomes containing Citadels now have 50% more chance to contain Essences, Strongboxes and Shrin
0.1.0f	Fixed a bug where Rare monsters could pause Delirium mist for an extended period of time, even before touching the Mirror of Delirium. This could result in opening a mirror and having no monsters spaw