In maps, the spawn rate is lowered to 4%, but each Master, league mechanic, and sextant modifier on the map increases the chance of adding a Delirium encounter to the zone.
Mechanics
Delirium Mirror
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 entire map, and the delirium encounter begins.
Encounter
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 mitigation and damage. The further out you are in the mist, the stronger the effect.
Enemies in the mist can drop Cluster Jewels and Simulacrum SplintersSimulacrum SplinterStack Size: 300Combine 300 Splinters to create a Simulacrum. (starting at maps).
As you kill enemies inside the mist, a reward bar on the bottom left will start filling up. Filling the bar will cause you to gain the reward type after the Delirium encounter, and can be filled multiple times. When the first bar reaches level 3, a second reward bar will appear, and at level 5 a third reward bar appears.
Timer
Delirium encounters only last a short period of time. After a certain period of time, the mist will stop spreading, and a countdown begins. If you step out of the mist for more than 5 seconds, the Delirium encounter will end. Any enemies outside the mist 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.
Delirium orbs can be applied to maps to cover the entire map in mist permanently. Each orb makes the map 20% more Delirious, and up to 5 orbs can be used in one map. Rewards will also drop each time the bar is filled, since the mist never clears up. Enemies at very high Delirious percents are extremely tough, with even normal rarity enemies becoming comparable to high tier map bosses.
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.
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.
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.
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!
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.
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.
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.
Simulacrum SplinterSimulacrum SplinterStack Size: 300Combine 300 Splinters to create a Simulacrum.
Small Cluster JewelSmall Cluster JewelPlace into an allocated Small, Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Medium Cluster JewelMedium Cluster JewelPlace into an allocated Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Large Cluster JewelLarge Cluster JewelPlace into an allocated Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Unique Cluster Jewels
MegalomaniacMegalomaniac Medium Cluster JewelAdds 4 Passive Skills Added Small Passive Skills grant Nothing <3 Random notable mods>CorruptedIf you're going to act like you're better than everyone else, make sure you are.Place into an allocated Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
VoicesVoices Large Cluster JewelAdds 3 Jewel SocketPassive Skills <Random empty passive skill node mod>CorruptedOnly a madman would ignore a god's instructions.Place into an allocated Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Calamitous VisionsCalamitous Visions Small Cluster JewelAdds Lone Messenger"Try as I might, I could not escape it. When I closed my eyes, I saw only death. Each breath tainted with the scent of seared and smouldering flesh, And each sound tangled with pleas for mercy."Place into an allocated Small, Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Kitava's TeachingsKitava's Teachings Small Cluster JewelAdds Disciple of KitavaSavour the bitter, cherish the sweet, For there may never be another chance to eat.Place into an allocated Small, Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Natural AffinityNatural Affinity Small Cluster JewelAdds Nature's PatienceYou can take the girl out of the woods, but you can't take the woods out of the girl.Place into an allocated Small, Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
One With NothingOne With Nothing Small Cluster JewelAdds Hollow Palm TechniqueOnce you begin to rely on your weapons, You ensure you can't live without them.Place into an allocated Small, Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
The Front LineThe Front Line Small Cluster JewelAdds Veteran's AwarenessIt was a great honour to fight at the front. The few that survived the initial charge were guaranteed fame and fortune.Place into an allocated Small, Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
The InterrogationThe Interrogation Small Cluster JewelAdds Secrets of SufferingPain is a fine motivator, But if you seek the truth, Fear of pain unknown has no parallel.Place into an allocated Small, Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
The SiegeThe Siege Small Cluster JewelAdds KineticismAs the dead battered Highgate's barricades, The Black Sekhema accepted her fate, And stood her ground.Place into an allocated Small, Medium or Large Jewel Socket on the Passive Skill Tree. Added passives do not interact with jewel radiuses. Right click to remove from the Socket.
Unique items
Split PersonalitySplit Personality Crimson JewelLimited to: 2This Jewel's Socket has 25% increased effect per Allocated Passive Skill between it and your Class' starting location <Two random modifiers>CorruptedYou need not go looking for a second opinion.Place into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
Algor MortisAlgor Mortis Carnal MittsEvasion: (90-101) Energy Shield: (69-91)Requires Level 50, 39 Dex, 39 Int+(50-70) to maximum Energy Shield +(15-20)% to Cold and Lightning Resistances (20-30)% chance to Sap Enemies in Chilling Areas Enemies in your Chilling Areas take (25-35)% increased Lightning Damage (15-20)% increased Effect of Non-Damaging AilmentsWinter's white blanket swaddles all.
AssailumAssailum Sinner TricorneEvasion: (719-925)Requires Level 64, 138 DexGrants Level 30 Snipe Skill Socketed Non-Channelling BowSkills are Triggered by Snipe Socketed Triggered BowSkills gain a 0.05 second Cooldown +(350-500) to Accuracy Rating +(350-500) to Evasion Rating +2 to maximum Snipe Stages +(14-20)% chance to Suppress Spell Damage while ChannellingA moment of calm before the battle can end the war.
PerfidyPerfidy Glorious PlateArmour: (776-892)Requires Level 68, 191 Str(25-40)% increased Melee Damage +(60-90) to maximum Life You can have two different Banners at the same time Banners you are carrying gain 1 Stage on Melee Hit, up to 5 per second <Two random Banner buff mods>The Trickster God turned the very Day and Night against each other. What hope have you?
Core game only: 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Ruthless mode only: 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.