Events

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Events are random occurrences that can strike a colony at any moment. They range from everyday occurrences like passers by, to all out assaults on the colony.

The player will be notified of an event's occurrence by an envelope icon that will appear down the right side of the screen. Envelopes are colour coded according to whether the event is good or bad - blue envelopes denote good events, and red envelopes denote bad events.

Clicking an envelope will open up the message with a description of the event, and the option to either dismiss the notification or, where possible, go to the location of the event. Alternatively, notification messages can be dismissed without opening via right click.


Event Data

Category Name Common Name Chance Favorability Minimum Time Before Repeat (days)
Big Threat RaidEnemy Enemy Attack 9.0 Bad 0
Big Threat AnimalInsanity Psychic Wave 1.0 VeryBad 1
Big Threat ShipPartCrash Ancient Ship Crash 1.5 Bad 30
Special RaidFriendly Faction Assistance 3 Good 0
Special AgentRevealed Traitor 1.3 VeryBad 40
Small Threat AnimalInsanitySingle Mad Animal 5 Bad 0
General Bad Eclipse Eclipse 4 Bad 8
General Bad SolarFlare Solar Flare 2.5 Bad 8
General Bad PsychicDrone Psychic Drone 1.2 Bad 8
General Bad ShortCircuit Faulty Conduit Explosion 1.2 Bad 15
General Bad CropBlight Mysterious Blight 2.5 Bad 8
General Good TraderArrivalGeneral Trade Ship In Range 13 Good 0
General Good TraderArrivalSlaver Slave Ship In Range 4.5 Good 0
General Good TravelerGroup Traveler Visit 8 Good 0
General Good VisitorGroup Faction Visit 8 Good 0
General Good WandererJoin Migrant 0.5 VeryGood 0
General Good ResourcePodCrash Cargo Pods 6.0 Good 0
General Good RefugeePodCrash Escape Pod 1.5 Good 0


Event Descriptions

Big Threats

Enemy Attack

Commonly known as a raid, this event comes in several types. The size of a raid is determined by your colony's wealth, and the difficulty setting of the AI Storyteller. It is possible for multiple raids to occur at the same time, possibly to the benefit of the player if both raids are from opposing factions.

Different types of raids include:

Sieges

Siege raids typically see a party of raiders set up a small camp with a number of mortars. They will continuously fire upon colonists, colony structures, and visitors/other raiders whose factions are hostile to that of the besiegers.

Siege parties will abandon their camp and assault the colony when either all of their siege weapons are destroyed, or they suffer significant casualties.

Assaults

Assault raids arrive either via the edge of the map, or by drop pod. They may assault the colony immediately, or stage for a time before launching their attack, allowing colonists time to take up defensive positions, or to skirmish/counter assault the attakcers.

Mid-Base Assaults

Arguably among the most dangerous attacks, these assaults differ from normal assaults in that a group of raiders arrive via drop pod directly in exposed sections of the player's base, leaving them little time to prepare.

Psychic Wave

A psychic wave is a pulse of psychic energy that immediately drives a number of the local wildlife insane, causing them to attack the nearest human, and any animal that happens to be standing in their way. A psychic wave is not to be laughed at - most of the wildlife in rimworld is quite fast, and can close the gap to a colonist before they can get off a second shot, often leading to the colonist being overwhelmed.

Ancient Ship Crash

This event sees a massive piece of an ancient ship crash down to the surface near (or even in) the colony. This ship part happens to contain a hostile AI core that emits a psychic drone that negatively affects the mood of all humans on the map. This drone begins low, but grows progressively stronger the longer the ship part remains, therefore it is advisable to destroy the part as quickly as possible. A colonist's psychic sensitivity traits may worsen or lessen the effect of the drone.

The AI is also capable of emitting concentrated bursts of psychic energy, driving one colonist to an immediate mental break, or a localised blast that drives all animals in the immediate vicinity insane.

Upon attacking the part however, a group of mechanoids will emerge to defend the crashed ship part and its AI core. The size of the group is dependant on colony wealth and storyteller difficulty.


Special

Faction Assistance

When a player is attacked, they can call upon friendly factions with sufficient relations to send a group of fighters to assist them, at a cost of relations. It is important to observe relations between the friendly faction and the raiders however, as friendly factions won't assist you against people they aren't hostile to.

This event also has a chance to occur at random.

Traitor

When this event occurs, a colonist is suddenly revealed to be an agent of one of the colony's enemies - they will attempt to flee, but can be recaptured (and/or punished) before they do so.


Small Threats

Mad Animal

When this event occurs, a single random animal on the map is driven insane. Like with the psychic wave, the insane animal will charge toward the nearest human, attacking any other animal in its way.


General Bad

Eclipse

During a solar eclipse, solar generators cease producing power, and outdoor crops stop growing. Be sure to have power and food stored for times like these, or an eclipse coupled with a raid could be the death of an unprepared colony.

Solar Flare

Solar flares cause all electrical items on the map to stop working for the duration of the event. Solar flares are particularly dangerous for colonies that rely on turrets for defense, as they will be vulnerable to any raid that arrives during the solar flare.

Psychic Drone

A psychic drone is a phenomena that affects all colonists of a randomly chosen sex, negatively influencing their mood. Unlike the crashed ship part's AI, this drone has no physical source, leaving colonists no choice but to endure it. Psychic sensitivity traits can be a big factor in the threat posed by this event.

Faulty Conduit Explosion

At any moment, a power conduit may suffer a fault, causing it to explode and expel all stored power in the attached circuit in the process; the amount of stored power directly affects the size of the explosion - which can reach up to 15 squares in diameter with a total of 90,000 Wd stored.

Mysterious Blight

This event destroys most - if not all - of the colony's planted crops, including hydroponic crops. Be sure to keep a reserve of food to counter the issue.


General Good

Trade Ship In Range

When an orbital trade ship passes near the colony, players may spend silver to obtain resources or weapons, or alternately sell excess resources or weapons for silver.

Slave Ship In Range

Slave traders are rarer than regular traders, and traffic in that most precious of cargo - fresh colonists. Players can also sell unwanted prisoners to slave traders, however all colonists will suffer a mood penalty for doing so.

Traveler Visit

Occasionally, a group of friendly faction members will travel from one map edge to another, which may work in the player's favour should the group run across mutual enemies.

Faction Visit

A friendly faction visit consists of a group of friendly faction members arriving and milling about the player's colony. They currently possess no higher purpose, but their arrival could prove advantageous if the colony is assaulted by a mutual enemy while they are present.

Migrant

This event sees a random colonist arrive via the map edge, and join the colony immediately.

Cargo Pods

From time to time, cargo pods from the wreckage of the ship will fall out of orbit. These pods contain a random amount of resources, and pieces of slag, which can be refined into usable metal at a slag refinery.

Escape Pod

Rarely, an escape pod will crash land nearby. The occupant will be incapacitated, but can be rescued and recruited into the colony.