Delirium

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This page is about the game mechanic. For the league, see Delirium league. For the essence, see Essence of Delirium.
A Mirror of Delirium

Delirium is a zone-wide effect that spawns new enemies and empowers existing ones. The Delirium Mirror version of the encounter is considered Extra Content and has a baseline greater than 8% chance to appear in any non-unique map area. Delirium orbs can also be applied to a map to add a baseline level of deliriousness and rewards; they can also be found with layers of Delirium on them (known as Delirium maps).

Encounter rate

Delirium Mirrors can appear from the Torched Courts in Act 5 onwards at a rate >8%. They stop appearing for characters with level 72 and higher for areas with level lower than 65[1].

In maps, Delirium Mirrors have a baseline greater than 8% chance to appear in a zone. Delirium maps cannot normally drop but can be obtained from sources of Delirium rewards or with the Pathological notable atlas passive.

Mechanics

Delirium Mirror

A Delirium mirror spawns on a map. It reflects the player's character as shown.

Randomly while players are completing the acts or running Maps, a Mirror of Delirium will spawn. They will always spawn within a close distance from the zone entrance. Once a player passes through it, it spawns a gray mist that spreads outwards throughout the map, beginning the Delirium encounter.

Encounter

Delirium monsters spawn during an encounter. Reward type is currency (bottom left).

New enemies and hazards can spawn within the mist and existing enemies can receive a Delirium modifier, making them stronger or giving them new attacks. All enemies in the mist are Delirious, giving them increased damage and damage reduction.

In a Delirium mirror encounter, the further out you are in the mist, the stronger the deliriousness effect. In delirium maps, the deliriousness percentage remains constant.

Enemies killed in the mist in maps can drop Cluster Jewels and Simulacrum SplintersSimulacrum SplinterStack Size: 300Combine 300 Splinters to create a Simulacrum..

As you kill enemies inside the mist, a reward bar on the bottom left will start filling up. For Delirium mirror encounters, filling the bar completely will increase the counter, and cause you to gain the indicated reward type after the Delirium encounter ends. Additionally, when the first bar reaches level 3, a second reward bar will appear at level 1; at level 5, a third reward bar appears, and so on every 2 reward level.

Delirious maps do not grant additional reward bars at certain levels. All reward bars increase in level simultaneously instead and drop the indicated rewards each time you reach a new reward level instead of all at once after the encounter ends.

The Unending Nightmare keystone prevents Delirium mirror encounters from dissipating and also prevents them from being ended manually. Rewards are dropped on reaching a new reward level like Delirious maps, but will still grant an additional reward bar every 2 levels.

Scaling

Higher percentages of Delirium increase both monster damage and monster damage reduction. Through empirical testing and official reference points at 100% Deliriousness, it was possible to obtain the following scaling estimates[2].

Deliriousness % Increased damage[3] Less damage
taken (Unique)[4][2]
Less damage
taken (Rare)[2]
Less damage
taken (Magic)[2]
Less damage
taken (Normal)[2]
20% 6% 16% 18% 20% 19% (19.2)
40% 12% 32% 36% 40% 38% (38.4)
60% 18% 48% 54% 60% 58% (57.6)
80% 24% 64% 73%* Expected value is 72; other values for Rare monsters are consistent otherwise. 80% 77% (76.8)
100% 30% 80% 90% 96%* Expected value is 100; likely hard-capped to prevent monsters from being unkillable. 96%

Additionally, it is speculated that it provides an overall more multiplier to monster item quantity and rarity[5][better source needed]. However, there are several caveats to this that are being investigated by the Prohibited Library. Monsters from strongboxes[6], as well as possibly other monsters that are not immediately spawned on entering an area, do not appear to be affected by this multiplier.

Deliriousness % More Monster
Item Quantity[5]
More Monster
Item Rarity[5]
20% 10% 20%
40% 20% 40%
60% 30% 60%
80% 40% 80%
100% 50% 100%

Timer

The countdown timer displaying when the encounter is about to end.

Delirium mirror encounters only last a short period of time. After a certain period of time, the mist will stop spreading and start to dissipate outwards in a donut shape. If you step out of the mist for more than 5 seconds, the Delirium encounter will end. Delirium monsters disappear when they are outside the mist and native monsters will have their Delirium modifiers removed. The encounter can also be prematurely ended by pressing a button on the bottom right (which can be key bound). Certain actions will pause or extend the time before the mist stops spreading. The mist also stops moving while there are no players in the instance.

The following will pause the mist timer:

The following will extend the mist timer:

The Unending Nightmare Atlas keystone passive prevents the mist from dissipating.

Delirious map modifier

Map items can be affected by a special modifier that covers the entire map in mist permanently. The mechanics are similar to the Delirium encounter that can randomly occur in a map, with the following exceptions:

  • There is no Delirium Mirror. Delirium is already active from the moment the map begins.
  • There is no timer. Delirium is permanently present throughout the entire map.
  • Rewards drop each time the bar is filled, instead of dropping only when the timer expires. The number of reward bars do not increase at certain thresholds.

This modifier has five levels of strength, expressed as a percentage -- 20%, 40%, 60%, 80%, or 100%. The higher the percentage, the tougher the monsters and the greater the rewards. Enemies at very high Delirious percentages are extremely difficult, with even normal rarity enemies becoming comparable to high-tier map bosses.

Map items can drop with this modifier present at any of the five levels of strength. Delirium orbs can be used on map items. An orb adds 20% delirium to a map item that does not already have the delirious modifier, or increases the map's existing delirium strength by one level (20%).

Omniphobia (in any tier map) and Kosis (in T11+ maps) each have a chance to appear equal to the deliriousness percentage. Allocating Delusions of Persecution and its preceding small passive skills increases the chance to spawn these bosses by 156%, guaranteeing boss encounters in maps with at least 40% deliriousness.

Rewards

Icon Reward
Miscellaneous items
Weapons
Armour
Jewellery
Unique items
Skill gems
Currency
Divination cards
Labyrinth items
Map fragments
Maps
Talismans
Perandus items
Essences
Breach items
Harbinger items
Abyss items
Fossils
Scarabs
Incubators
Blight items

Strange Voice

Main page: Strange Voice

Starting from The Torched Courts (Act 5), a voice starts talking to the player whenever you touch a Mirror of Delirium. He has unique lines in Act zones.

Related items

ItemRequired levelStats
Abyssal Delirium OrbAbyssal Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Abyss Items reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Armoursmith's Delirium OrbArmoursmith's Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Armour reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Blacksmith's Delirium OrbBlacksmith's Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Weapons reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Blighted Delirium OrbBlighted Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Blight reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Cartographer's Delirium OrbCartographer's Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Map Items reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Challenging Delirium OrbChallenging Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Ultimatum reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Delirium OrbDelirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Generic Item reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.
Shift click to unstack.
1N/A
Diviner's Delirium OrbDiviner's Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Divination Cards reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Fine Delirium OrbFine Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Currency Items reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.
Shift click to unstack.
1N/A
Foreboding Delirium OrbForeboding Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Harbinger Items reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Fossilised Delirium OrbFossilised Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Fossils reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Fragmented Delirium OrbFragmented Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Fragments reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Imperial Delirium OrbImperial Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Labyrinth Items reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Jeweller's Delirium OrbJeweller's Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Trinkets reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Kalguuran Delirium OrbKalguuran Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Expedition Items reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Obscured Delirium OrbObscured Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Breach Items reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Portentous Delirium OrbPortentous Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Prophecy Items reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.
Shift click to unstack.
1N/A
Primal Delirium OrbPrimal Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Talismans reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
SimulacrumSimulacrumHow do you defeat that which dwells within you?Open a Delirium portal by using this item in a personal Map Device. Can only be used once.1N/A
Singular Delirium OrbSingular Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Unique Items reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Skittering Delirium OrbSkittering Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Scarabs reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Thaumaturge's Delirium OrbThaumaturge's Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Gems reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Timeless Delirium OrbTimeless Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Legion reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A
Whispering Delirium OrbWhispering Delirium OrbStack Size: 10Modifies a Map item adding layers of Delirium with the Essences reward typeRight click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item.1N/A

Related Atlas passive skills

NameStats
Additional Delirium Reward Chance
Delirium Encounters in your Maps have 4% chance to generate an additional Reward type [1] [2] [3]
Cluster Jewel Chance
Delirium Monsters in your Maps have 10% increased chance to drop Cluster Jewels [1] [2]
Delirious Map Chance
Maps found in your Maps have 1% chance to have layers of Delirium [1]
Delirium Additional Splinters
6% increased Stack size of Simulacrum Splinters found in your Maps [1] [2]
Delirium Boss Chance
Delirium Encounters in your Maps are 16% more likely to spawn Unique Bosses [1] [2] [3]
Delirium Boss Chance and Additional Delirium Reward Chance
Delirium Encounters in your Maps have 2% chance to generate an additional Reward type
Delirium Encounters in your Maps are 8% more likely to spawn Unique Bosses [1]
Delirium Chance
Your Maps have +4% chance to contain a Mirror of Delirium [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11]
Delirium Difficulty
Delirium in your Maps increases 10% faster with distance from the mirror [1] [2]
Delirium Fog Dissipation Delay
Delirium Fog in your Maps lasts 3 additional seconds before dissipating [1] [2]
Delirium Orb Reward Chance
Delirium Rewards in your Maps have 10% increased chance to give Delirium Orbs [1] [2]
Delirium Orb Reward Chance and Cluster Jewel Chance
Delirium Monsters in your Maps have 5% increased chance to drop Cluster Jewels
Delirium Rewards in your Maps have 5% increased chance to give Delirium Orbs [1]
Delirium Persistence
Delirium Fog in your Maps dissipates 8% slower [1] [2]
Delirium Reward Progress
Delirious Monsters Killed in your Maps provide 10% increased Reward Progress [1] [2]
Delirium Reward Progress and Additional Splinters
3% increased Stack size of Simulacrum Splinters found in your Maps
Delirious Monsters Killed in your Maps provide 5% increased Reward Progress [1]
Unending Nightmare
Delirium Fog in your Maps never dissipates
Simulacrum Splinters cannot be found in your Maps
Delirium Orbs cannot be found in your Maps [1]
Compulsive Hoarder
Delirium Encounters in your Maps have 8% chance to generate three additional Reward types [1]
Delusions of Persecution
Delirium Encounters in your Maps are 100% more likely to spawn Unique Bosses
Delirium Bosses in your Maps drop 50% increased Simulacrum Splinters
Delirium Bosses in your Maps have 50% increased chance to drop Unique Cluster Jewels [1]
Descent Into Madness
Delirium in your Maps increases 50% faster with distance from the mirror [1]
Imagined Pursuits
Delirium Reward Types in your Maps gain +1 to count on Map Completion [1]
Paranoid Fixation
Delirious Unique Monsters in your Maps have a 1% chance to drop an additional Delirium Orb
Delirious Unique Monsters in your Maps have a 2% chance to drop an additional Cluster Jewel [1]
Pathological
Maps found in your Maps have 3% chance to have layers of Delirium [1]
Screaming Whispers
18% increased Stack size of Simulacrum Splinters found in your Maps [1]
That Which You Seek
Your Maps have +10% chance to contain a Mirror of Delirium [1]
The Singular Eternity
Delirium Fog in your Maps dissipates 25% slower
Delirium Fog in your Maps lasts 10 additional seconds before dissipating [1]

Related Sextant modifiers

NameGroupsFor generated item/monster modifiers the minimum item/monster level respectively. Some generation types may not require this condition to be met, however item level restrictions may be raised to 80% of this value.StatsSpawn Weighting
MapAtlasDeliriumMapAtlasDelirium13 uses remaining
Your Maps contain a Mirror of Delirium
no_monster_packs 0
unique_map 0
default 100
MapAtlasDeliriumMavenMapAtlasDelirium115 uses remaining
Your Maps contain a Mirror of Delirium
no_monster_packs 0
unique_map 0
default 100
MapAtlasDeliriumRewardsFillFasterMapAtlasDeliriumRewardsFillFaster13 uses remaining
Delirium Reward Bars fill 100% faster in your Maps
unique_map 0
no_monster_packs 0
default 50
MapAtlasDeliriumRewardsFillFasterMavenMapAtlasDeliriumRewardsFillFaster115 uses remaining
Delirium Reward Bars fill 100% faster in your Maps
unique_map 0
no_monster_packs 0
default 50

List of Delirium modifiers


Name Monster rarity Effect(s)
Banishing Flame Normal/Magic
Cascading Storm Normal/Magic
Crushing Terror Normal/Magic
Diluting Touch Normal/Magic Diluting Touch debuff on hit
Eroding Touch Normal/Magic Eroding Touch debuff on hit
Paralysing Touch Normal/Magic Paralysing Touch debuff on hit
Putrify Dead Normal/Magic
Shatter Dead Normal/Magic
Spatial Distortion Normal/Magic
Spawn Dead Normal/Magic
Vengeful Blast Normal/Magic
Vengeful Bones Normal/Magic
Vengeful Chase Normal/Magic
Vengeful Gang Normal/Magic
Vengeful Grip Normal/Magic
Vengeful Pack Normal/Magic
Vengeful Skyfire Normal/Magic
Vengeful Soul Normal/Magic
Vengeful Stalker Normal/Magic
Wasting Touch Normal/Magic Wasting Touch debuff on hit
Winter Whorl Normal/Magic
Bolt Cross Rare/Unique
Burrowing Blade Rare/Unique
Conflagrating Path Rare/Unique
Crushing Leap Rare/Unique
Frozen Flume Rare/Unique
Glaciator Rare/Unique
Icicle Wreath Rare/Unique
Jagged Swell Rare/Unique
Ring of Fire Rare/Unique
Scatter Storm Rare/Unique
Scorched Earth Rare/Unique
Shockbomb Rare/Unique

Version history

Version Changes
3.23.0
  • Catalysts are no longer offered as Ritual Rewards, or a reward type for Delirium Rewards.
  • Metamorph rewards from Heist, Expedition, Betrayal, Delirium, Legion and Eldritch Altars have been replaced with Ultimatum rewards.
  • When Delirium fog has ceased its movement due to players engaging in other League content, walking out of the mist will no longer cause the Delirium fog to dissipate.
3.20.0
  • Delirium mist now pauses for ten seconds when you first interact with the Sanctum Map in an area.
  • We want to improve on the concept that the Atlas Tree allows players to invest into leagues that they enjoy, and have added new clusters to the passive tree for league content that can be blocked through Atlas Passive Skills. We've also increased the chances for such league content to appear.
3.18.0
  • The chance for Map Areas to contain a Mirror of Delirium no longer increases by a small amount for each other league, atlas or master mechanic that appears in that area. Instead, Map Areas now have an 8% chance to contain a Mirror of Delirium, with campaign areas from the Torched Courts onwards having a slightly higher chance.
3.14.0
  • Reduced the chance for Map Areas to contain a Delirium Mirror by approximately 20%. The chance to encounter a Zana mission containing a Delirium encounter has also been lowered by the same amount.
  • The Quantity and Rarity bonus applied to monsters from Delirium encounters has been lowered as is now more consistent across Monster rarities. Previously, Monsters of Normal rarity had a disproportionately larger amount of Quantity and Rarity being applied to them compared to Monsters of higher rarities.
3.11.0
  • Delirium has been added to the core game. From the Torched Courts onwards, you'll have approximately a 5% chance to encounter a Mirror of Delirium in each area. Once you reach the Atlas, that chance will increase by a small amount for each other league, atlas or master mechanic that appears in that area. In other words, if your goal is to encounter Mirrors of Delirium then you are encouraged to use your Zana modifiers, master missions, sextants, and whatever else you have available to you.
  • You'll now have a greater chance of finding Cluster Jewels through Delirium encounters, proportional to the number of rewards you earn during that encounter.
3.10.1c
  • Active Legion encounters now cause Delirium mist to pause its movement during both the Frozen phase and the Combat phase (previously was just the Frozen phase).
  • Active Blight encounters now cause Delirium mist to pause its movement while you are within a large radius of Blight Portals, rather than the Ichor Pump. This is because Blight Portals can sometimes spawn very far away!
3.10.0e
  • Delirium mist now stops moving while all players in the area are engaged in a Blight Encounter, Betrayal Research encounter, Legion Encounter, Breach or Incursion.
  • Activating or completing several time-consuming gameplay elements causes the Delirium mist to stop moving for a set amount of time based on the encounter type. The following conditions cause the Delirium mist to stop moving: an Abyss crack reaching its next location, defeating a Harbinger, defeating a Metamorph, defeating a Red Bestiary beast, defeating an Essence Rare monster, opening a Perandus chest, opening a Strongbox, completing a Blight encounter, completing a Legion encounter and defeating a Betrayal target.
  • When you fulfill the requirements for a reward for the third time in a Delirium encounter, an additional reward type is now added and its requirements automatically fulfilled for the first reward. The new reward is fulfilled in tandem with the initial reward. In addition, when you fulfill the requirements for the initial reward a fifth time, a second reward type is added (again with the requirements automatically fulfilled for the first reward). These rewards are chosen at the exclusion of each other.
  • Reduced the likelihood of receiving Generic, Weapon, Armour and Trinket reward types.
  • Delirium mist now stops moving when no players are in the instance. This should allow players to leave an area to vendor and trade items during a Delirium encounter more freely.
3.10.0d
  • Delirium modifiers are now applied on a per-pack basis. This means that a given pack of monsters will only have a single Delirium modifier, rather than potentially having a variety of different modifiers.
  • Reduced the difficulty of Delirium monsters at each mist depth.
  • Significantly reduced the chance of Delirium modifiers appearing on monsters.
3.10.0
  • Introduced to the game.

References

  1. Nickoladze (Oct 25, 2021). "Delirium in campaign". Reddit.
  2. 2.0 2.1 2.2 2.3 2.4 blvcksvn (June 5, 2023). "Update on Delirium damage reduction %". Path of Exile Subreddit. Retrieved June 5, 2023.
  3. https://www.pathofexile.com/forum/view-thread/2791689
  4. https://www.reddit.com/r/pathofexile/comments/z3m44q/psa_debunking_the_plague_bearer_delirium_myth/
  5. 5.0 5.1 5.2 Community_Team (Apr 12, 2021). "Game Balance in Path of Exile: Ultimatum". Path of Exile Forum. Retrieved January 25, 2023.
  6. poorFishwife (February 5, 2023). "Deli Quant Theory". Prohibited Library (requires membership to view). Retrieved March 7, 2023.

ru:Делириум