Events/Anomaly

Main article: Events

The Anomaly DLC introduced a new style of Incident; one linked to the activity level of the Monolith structure. Every Anomaly event belongs to a Tier, and can only trigger if the Monolith activity level is at least that high. For instance, a Stirring Monolith (activity level 1) would allow all events from Tier 0 and 1, but none from Tier 2.

If the storyteller option Ambient horror is active, the Tier system will be ignored. All Anomaly events become available, with the exception of those directly related with the Monolith structure. This is due to the Monolith not spawning with this option active.

Anomaly event list

Anomaly Incidents

Tier	Possible Incidents	Category	Base Chance	Earliest Day	Cooldown	Min. Pop	Min. Threat Points
0	Small Shambler Swarm	Threat Small	1	0	0	0	0
	Psychic Ritual Siege	Threat Big	2.5	0	0	0	200
	Shambler Assault	Threat Big	2	20	10	0	250
	Creeper Joiner Arrival	Misc	1	10	60	0	0
	Shambler Swarm	Threat Big	2	0	0	0	0
	Distress Call	Quest	1	15	45	0	0
1	Sightstealer Arrival	Threat Big	2	0	0	0	0
	Fleshbeast Attack	Threat Big	2	15	0	0	0
	Chimera Assault	Threat Big	2	15	0	0	300
	Hate Chanters	Threat Big	1.5	0	10	0	200
	Gorehulk Assault	Threat Big	1.5	15	0	0	0
	Devourer Assault	Threat Big	1.5	0	0	0	350
	Sightstealer Swarm	Threat Big	1	0	0	0	0
	Devourer Water Assault	Threat Big	1	0	0	0	500
	Shambler Swarm Animals	Threat Big	0.25	0	0	0	0
	Ghoul Attack	Threat Small	0.2	15	0	0	0
	Metal Horror Implantation	Misc.	0.2	30	45	4	300
	Death pall	Threat Big	0.5	15	30	0	0
	Revenant	Threat Big	1	30	90	5	300
	Twisted obelisk	Threat Big	0.5	50	120	0	0
	Corrupted obelisk	Threat Big	0.5	50	120	0	0
	Warped obelisk	Threat Big	0.5	50	120	0	0
	Mysterious Cargo - Unnatural Corpse	Misc.	0.2	10	240	0	200
	Mysterious Cargo - Golden Cube	Misc.	0.2	10	240	0	200
	Mysterious Cargo - Revenant Spine	Misc.	0.2	10	240	0	200
	Frenzied Animals	Threat Big	0	0	0	0	0
2	Pit gate	Threat Big	0.75	0	45	0	500
	Fleshmass heart	Threat Big	0.75	60	120	0	0
	Unnatural darkness	Threat Big	1	45	75	0	0
	Nociosphere	Threat Big	1	45	30	0	0
	Blood rain	Threat Big	0.5	14	45	0	0
	Unnatural Corpse Arrival	Misc.	0	0	240	0	0
	Golden Cube Arrival	Misc.	0	0	240	0	0
	Creepjoiner Offer Metalhorror	Misc.	0.05	10	60	0	0

Tier 0

Activity level 0: Inactive

Events of this tier can happen as long as the Anomaly DLC is active regardless of monolith level, even sans prior interaction.

Shambler raid

A group of shamblers spawn on the colony map. There are 3 variants of this event at this level of activity, each of different intensity.

Type	Description	Duration corpses	Others
Small Shambler Swarm	A small group of shambling corpses is approaching. The inhuman force that animates them is fading, so they will collapse within a day. If you can capture one, you can study it for anomaly knowledge. Otherwise, they might not notice you if you leave them alone.	2.5 to 3.5 days	Consist of 2-4 shamblers
Shambler Swarm	A group of shambling, rotting corpses is approaching. They will now wander through the area. If they see a human, they will attack. If not, they will leave in a few days.	2.5 to 3.5 days	-
Shambler Assault	A horde of shambling rotting corpses is approaching. They are intent on attacking your colony. As they exhaust their strange energy, they will begin to collapse within hours. They are attacking immediately.	4-10 hours	Immediately attack the colony. Shamblers can attack from multiple directions. Shamblers target humans and will "dumb breach" their way towards their targets.

Psychic ritual siege

Main article: Psychic ritual siege

A group of Horax cultists arrive nearby and will attempt to use a psychic ritual to either abduct a colonist or spawn fleshbeasts. They may attempt to perform multiple rituals.

The cultists will choose a spot nearby to cast their ritual. Only the caster is required to perform the ritual and all other cultists will wander around and defend. Only damage or interruption to the caster will interrupt the ritual and cause the cultists to attack directly.

The cultists can perform either 4 abductions or 4 fleshbeast summons. After performing four rituals the cultists will attack like a standard raid. The cultists do not attempt to immediately kidnap those abducted with skip abduct. They will perform another ritual if they have not yet performed 4.

Distress signal (quest)

Main article: Distress signal

You've intercepted a distress signal from a nearby camp of a faction.

Upon reaching the camp, you will find it overrun with Fingerspike, Toughspike, and Trispike. Members of the calling faction are usually dead, but may be alive^{[Chance unknown.]} The map will be covered in fleshmass, with flesh sacks and flesh bulbs as well.

Creepjoiner

Main article: Creepjoiner

A random pawn appears that wants to join your colony. The pawn waits on the edge of your map for someone to be sent to talk to them. They usually have some great benefit, but come with large risks too.

If rejected, they can either depart peacefully or become hostile.

Joiners have a specific list of upsides and possible downsides. See the main article for details.

Tier 1

Activity level 1: Intermittent psychic humming

This tier encompasses most of the Anomaly events, and requires the monolith to be active.

Sightstealer Arrival

A single sightstealer will enter the map. There is no warning for this event.

Fleshbeast Attack

Fleshbeasts emerge from Pit Burrows. Pit Burrows spawn in random path-able outdoor areas not under furniture. Fleshbeast Attacks only spawn Fingerspikes, Trispikes, and Toughspikes. Bulbfreaks are not possible.

Entity Assaults

This events are largely the same, consisting of a raiding party constituted solely of a main entity.

Event	Main threat	Event Description	Others
Chimera Assault	Chimera	A group of twisted animal-like chimera monsters have appeared nearby. The misshapen beasts will watch your colony, waiting for an opportunity to attack. They are skittish and may retaliate if provoked.
Gorehulk Assault	Gorehulk	A group of monstrous, human-like abominations are attacking! Their bodies are ravaged by thick keratin spines which they can launch at a distance. However, their fleshy forms can do little damage at close range.
Devourer Assault	Devourer	A swarm of huge gape-mawed monsters are attacking! These creatures' jaws are massive enough to swallow a human whole. Keep your distance!
Devourer Water Assault	Devourer	A swarm of huge gape-mawed monsters are attacking! These creatures' jaws are massive enough to swallow a human whole. Keep your distance!	The devourers will emerge from a body of water.

Hate Chanters

Main article: Hate chanters

This is a type of raid that spawns a large amount of inhumanized horax cultist on the edge of the map, advance a few tiles in, and begin to hate chant.

An active hate chant gives a mood debuff to all colonist on the map, which will increase in severity the longer it last.

Cultists will ignore your colonists until 10%-30% of the cultist are either downed or death. After this point, they will begin their attack. Contrary to other human raids, hate chanters will fight to the last.

Sightstealer Swarm

Multiple Sightstealers will enter the map, potentially in multiple waves. After killing the last sightstealer on the map, if there are waves remaining, the message "Sightstealer howling" will appear. The time between waves ranges from a few hours to days.

Shambler Swarm Animals

A group of Shambler animals will appear nearby and wander across the map. Their behavior will emulate Shambler Swarms.

Do note that this group may contain Chimeras.

Ghoul Attack

A vicious humanoid ghoul is attacking!
It is intent on inhuman savagery and it cannot feel pain. Prepare to defend.

A single ghoul spawns on the current map.

Metal Horror Implantation

A pawn with a valid infection pathway gains a metalhorror infection. This is a silent event.

Death pall

A Death pall weather event starts, reanimating all unroofed non-mechanoid corpses as Shamblers. This event will last for 1 to 3 days.

Revenant

A revenant enter the map. This event requires a colony with 5 or more colonist, including temporal ones. This is a silent event.

Obelisk Spawn

An Obelisk spawns somewhere on the map. There are 3 variants of this event, once for each type of obelisk besides the monolith, none of which are an immediate danger:

Obelisk type	Event Description
Corrupted obelisk	-
Twisted obelisk	-
Warped obelisk	-

Mysterious Cargo

This event is part of the quest Mysterious cargo, in which a friendly planetary faction or an anonymous AI asks you to take an unspecified item off their hands, along with a sizable payment. There are 3 variants of this event, one for each variant of the quest. The event received will be one of the following:

• An unnatural corpse
• A revenant spine
• A golden cube

See the quest page or the respective entity page for more details.

Tier 2

Activity level 2: Pulsing with psychic energy.

Events of this tier require a monolith with an Activity level 2 or above.

Tier 3

Activity level 3: Awakening.

Place events of tier 3 here, if any. On the alternative, write down if anything interesting happens at this level.

Tier 4

Activity level 4: Awakened.

Main article: Endings#Monolith endgame

This allows entering the metal hell and is required for the Anomaly ending.