Delirium is a zone-wide effect that spawns new enemies and empowered existing ones.
In each zone, 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. 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.
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.
After a certain period of time, the mist will stop spreading. If you step out of the mist for more than 5 seconds, the Delirium encounter will end. Any enemies outside of 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.
The following will pause the mist timer:
- During an Immortal Syndicate Research encounter
- During an Incursion encounter
- During a Legion Timeless Monolith encounter
- During a Breach encounter
- Being within range of a Blight portal
The following will extend the mist timer:
- Opening a Strongbox
- Defeating a monster holding an Essence
- Capturing a red Beast
- Defeating an Immortal Syndicate group
- An Abyss crack starts moving to the next direction
- Completing a Blight encounter
- Defeating a Metamorph
- Defeating a Harbinger
- Opening a Perandus chest
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.
List of Delirium modifiers
|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|
|Wasting Touch||Normal/Magic||Wasting Touch debuff on hit|
|Ring of Fire||Rare/Unique|