Extra Content

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Extra Content is a keyword that represents content from previous challenge leagues that can be encountered randomly in Maps, a few of which are also encounterable in the Acts.

By default, Extra Content appears at a base 8% in maps. This can be increased by various Notables and small passives on the Atlas Passive Skill Tree, or reduced to 0% through various Notables. Things that modify the rate of Extra Content do not prevent it from being spawned via guaranteed encounters e.g. Scarabs.

The Stream of Consciousness Keystone multiplies the base chance by 1.5x (or 12% base chance).

Currently, Extra Content includes the following:

• Abysses
• Breaches
• Blights
• Expedition Encounters
• Legion Encounters
• Metamorph Encounters
• Mirrors of Delirium
• Monsters Imprisoned by Essences
• Ritual Altars
• Rogue exiles (Anarchy)
• The Sacred Grove (Harvest)
• Shrines (Domination)
• Smuggler's Caches (Heist)
• Strongboxes (Ambush)
• Tormented Spirits (Torment)

Note that content from Masters (Bestiary, Delve, Incursion, Betrayal; Kirac cannot be encountered in map) are not considered Extra Content. There are some league mechanics that are not part of masters or Extra Content, such as Beyond, Invasion, Rampage, Talisman, Harbinger and Warband etc, but available to spawn in the game, by some mean.

There are other former league mechanics that are part of the core game but subsequently removed: Prophecy, Nemesis, Bloodlines and Perandus (as the form of The Perandus ManorThe Perandus Manor
Chateau MapMap Level: 72
Map Tier: 5
Guild Character: ™
Item Quantity: +(60-100)%
Item Rarity: +(200-300)%(100-150)% increased Experience gain
(200-300)% increased number of Rare Monsters
(30-40)% more Monster Life
(16-24)% increased Monster Damage
Area contains Cadiro PerandusForget kings and emperors;
He who holds the coin holds all the power.Travel to this Map by using it in a personal Map Device. Maps can only be used once. unique map). These are not "Extra Content" as well.

Version history

Version	Changes
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. Added a new Atlas Keystone Passive Skill, Stream of Consciousness, which grants "Your Maps cannot be modified by Fragments" and "Your Maps have 50% more Base chance to contain Extra Content".
Unknown	"Extra Content" as a keyword is introduced
3.14.0	Reduced the chance for Map Areas to contain Abyss, Ambush, Blight, Breach, Domination, Essence, Heist, Legion, Metamorph and Torment encounters by 20%. The chance to encounter a Zana mission containing any of these mechanics has also been lowered by the same amount. (Normalized all content except Mirrors of Delirium to 8%)
1.0.0	rogue exile became the first league mechanic that incorporated into the core game.