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 color coded according to whether the event is good or bad - blue envelopes denote good events, red envelopes denote bad events, and yellow envelopes denote neutral 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 | Min Time Before Repeat (days) |
|---|---|---|---|---|---|
| Disease | Flu | Flu | varies by biome | Bad | varies by biome |
| Disease | Plague | Plague | varies by biome | Bad | varies by biome |
| Disease | Malaria | Malaria | varies by biome | Bad | varies by biome |
| Disease | SleepingSickness | Sleeping sickness | varies by biome | Bad | varies by biome |
| 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 |
| Big Threat | ManhunterPack | Manhunter Pack | 2.0 | Bad | 15 |
| Big Threat | Infestation | Infestation | 2.8 | Bad | 20 |
| Special | RaidFriendly | Faction Assistance | 3 | Good | 0 |
| Special | AgentRevealed | Traitor | 1.3 | VeryBad | 40 |
| Small Threat | AnimalInsanitySingle | Mad Animal | 5 | Bad | 3 |
| Small Threat | ColdSnap | Cold Snap | 3 | Bad | 30 |
| Small Threat | HeatWave | Heat Wave | 3 | Bad | 30 |
| General Bad | Beavers | Alphabeavers | 1 | Bad | 15 |
| General Bad | Eclipse | Eclipse | 3 | Bad | 30 |
| General Bad | SolarFlare | Solar Flare | 1.5 | Bad | 30 |
| General Bad | PsychicDrone | Psychic Drone | 1 | Bad | 30 |
| General Bad | ShortCircuit | Faulty Conduit Explosion | 1.2 | Bad | 15 |
| General Bad | CropBlight | Mysterious Blight | 2.5 | Bad | 8 |
| General Bad | ToxicFallout | Toxic Fallout | 0.25 | Bad | 180 |
| General Bad | VolcanicWinter | Volcanic Winter | 0.11 | Bad | 280 |
| 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 | 0.4 | VeryGood | 0 |
| General Good | ResourcePodCrash | Cargo Pods | 6.0 | Good | 0 |
| General Good | RefugeePodCrash | Escape Pod | 1.5 | Good | 0 |
| General Good | PsychicSoothe | Psychic Soothe | 1.0 | Good | 30 |
| Neutral | RefugeeChased | Refugee Chased | 2.5 | Neutral | 15 |
| Biome Name | Flu | Plague | Malaria | Sleeping Sickness |
Fibrous Mechanites |
Sensory Mechanites |
Gut Worms |
Muscle Parasites |
|---|---|---|---|---|---|---|---|---|
| Arid Shrubland | 100 | 100 | 0 | 0 | 30 | 30 | 60 | 60 |
| Desert | 100 | 100 | 0 | 0 | 30 | 30 | 60 | 60 |
| Extreme Desert | 100 | 80 | 0 | 0 | 30 | 30 | 40 | 40 |
| Boreal Forest | 100 | 100 | 0 | 0 | 30 | 30 | 50 | 50 |
| Tundra | 100 | 80 | 0 | 0 | 40 | 40 | 30 | 30 |
| Ice Sheet | 100 | 80 | 0 | 0 | 30 | 30 | 0 | 0 |
| Tropical Rainforest | 100 | 100 | 160 | 140 | 30 | 30 | 80 | 80 |
| Biome Name | Mean Time Between Diseases |
Flu | Plague | Malaria | Sleeping Sickness |
Fibrous Mechanites |
Sensory Mechanites |
Gut Worms |
Muscle Parasites |
|---|---|---|---|---|---|---|---|---|---|
| Arid Shrubland | 60 | 228 | 228 | 0 | 0 | 760 | 760 | 380 | 380 |
| Desert | 80 | 304 | 304 | 0 | 0 | 1013.33 | 1013.33 | 506.67 | 506.67 |
| Extreme Desert | 90 | 288 | 360 | 0 | 0 | 960 | 960 | 720 | 720 |
| Boreal Forest | 50 | 180 | 180 | 0 | 0 | 600 | 600 | 360 | 360 |
| Tundra | 80 | 256 | 320 | 0 | 0 | 640 | 640 | 853.33 | 853.33 |
| Ice Sheet | 90 | 37.5 | 30 | 0 | 0 | 11.25 | 11.25 | 0 | 0 |
| Tropical Rainforest | 30 | 216 | 216 | 135 | 154.29 | 720 | 720 | 270 | 270 |
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 which could be High Explosive (HE) or Incendiary. They will fire upon colonists, colony structures, and visitors/other raiders whose factions are hostile to that of the besiegers only stopping to eat and sleep.
Siege parties will abandon their camp and assault the colony when they either run out of artillery shells, 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 attackers.
Mid-Base Assaults
A group of raiders arrives via drop pods directly in the player's base, leaving little time to prepare. Drop pods may punch through a constructed roof or thin rock roof.
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 localized 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 dependent on colony wealth and storyteller difficulty.
Manhunter pack
A pack of man-hunting animals have entered the area. They will roam the region, hunting for humanoid flesh. If they see a colonist run behind a door, they will attempt to beat down the door. They'll leave the area in a few days.
Manhunter packs always consist of a single animal type. Animals eligible to be selected for a manhunter pack include:
Infestation
A bug hive has emerged! It will slowly spawn bugs as well as produce additional hives. If you don't want it to infest the whole area, muster your forces and destroy it. But beware - the bugs will defend their hive.
Infestations will only spawn under a thick roof. If all insects are instantly killed by a turret wall, the hives will die out. Hives also bring glow pods that glow for 20 days (as long as they’re installed) and can be reinstalled or sold.
Special
Faction Assistance
When a player is attacked, they can use the comms console 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.
Ancient Danger
"As (Colonist Name) draws near the ancient wall a sense of foreboding overcomes him. (S)He isn't sure why, but (s)he feels this dusty structure may contain great dangers"
A walled out area of the map that when opened, can contain either cryptosleep caskets, mechanoids or both. Open at your own risk. The cryptosleep caskets usually contain humans.
This Event can sometimes be combined with the bug infestation event and can have a bug hive in it, so be careful about these
As of version 0.14.1234 (15 July 2016) pod people sometimes come with plasteel, components, and gold. As of other recent updates, luciferium can be found in these buildings.
Traitor
This event is disabled and should be disregarded.
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 or obstacle (doors, etc.) in its way. This event is particularly dangerous if a Boomalope or Boomrat turns, as they are fast and charge into melee range.
In early game on day two or three, this event usually occurs.
General Bad
Flash Storm
A localized, intense lightning storm in one area of the map. Causes big fires.
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.
On cold weather maps, Hydroponic farms will cease to grow crops regardless of the temperature, and heaters will fail causing ground based crops to fail as well.
Psychic Drone
Drone in this case does not refer to "Unmanned Aerial Vehicle" but instead "To produce a low-pitched hum or buzz."
A Psychic Drone phenomenon affects all colonists of a randomly chosen sex, negatively influencing their mood. Colonists have no choice but to endure it as the point of origin is off map. 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.
Heat Wave
A heat wave sweeps the colony, driving temperature up for several days. Colonists will complain about the heat, especially sleeping in heat if their rooms are not properly cooled. Additionally, things might rot in inadequately cooled freezers. There is also a chance for a fire to randomly appear on the map which can quickly spread and burn down an entire colony.
Cold Snap
A cold snap makes the temperature of a colony drop for several days. While this is generally good for item preservation, It can kill off crops and influence colonist moods and cause Hypothermia if colonists stay in non-heated areas for a prolonged time.
Alphabeavers
A group of ravenous wood-munching alphabeavers appears at the edge of the map. They will continually eat trees, and Saguaro cacti, until they consume them all, unless you eradicate them first.
It is recommended to bring more than one colonist, as if one turns manhunter, the whole pack will go manhunter which can turn some weak beavers, into a small army of killing machines.
Toxic Fallout
A distant chemical fire has released a plume of poison over this entire region. Any person or creature not under a roof will be slowly sickened by the toxic dust settling out of the atmosphere. It will last for anywhere between a few days to over a month.
Fallout affects corpses left outdoors. They become rotten after several days. Plants will wither as well ; it looks like they don't (anymore), but needs verification Weslington (talk) 23:25, 7 August 2016 (UTC) - actually near the very end I got a Blight; might be coincidence? Or this is always the case? Weslington (talk) 00:29, 8 August 2016 (UTC). This event will usually wipe out all wild animals and poses a serious danger to tamed ones unless they are restricted to an area under a roof. Toxic Buildup, which is caused by toxic fallout, can cause dementia if it progresses far enough.
Volcanic Winter
A distant supervolcano has erupted and begun spewing millions of cubic kilometers of ash into the atmosphere. Ash in the atmosphere will obscure the sun. Temperatures will drop and plants will suffer for lack of sunlight. It could pass in a few weeks, or it might last many months.
Poison Ship
A Poison Ship event kills plants in an expanding circle, eventually reaching the entire map. Do not confuse this with the plant killing snow aura present on both Poison Ships and Ancient Crashed Ships. The crops killed by the poison happen randomly, without a trace, and will also hit plants grown in a Hydroponics basin. The affected areas will ultimately have dramatically reduced chances of maturing simple crops, and slower crops will end up nearly impossible to grow.
General Good
Self Tame
Random animal becomes self tamed.
Farm Animals Wander
Some tame farm animals wander to and join the colony. Mostly cows and chickens.
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.
Pirate Merchant 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 any colonists without the psychopath trait 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 favor 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 electric smelter.
Escape Pod
Rarely, an escape pod will crash land nearby. The occupant will be incapacitated, but can be rescued and treated or be captured and possibly recruited into the colony. It's possible for the person to be related to someone in the colony. This is indicated on the notice as Escape pod (relationship). Despite the relationship, the pawn is not a colony member, even if you rescue them.
Psychic Soothe
When this event triggers it gives a positive mood modifier (+15) to all colonists of a randomly chosen sex. The event lasts between 1.5 to 3.5 days. It can be considered the opposite of the Psychic Drone.
Neutral
Refugee Chased
When this event triggers a window appears stating that an individual calls you, via radio, from nearby seeking refuge from a faction (hostile to you) that is chasing them. The player may choose 'Offer safety' or 'Ignore the message'. Ignoring the message will end the event. Offering safety will spawn the individual as a colonist at the map's edge who proceeds towards the colony. Shortly thereafter, the pursuing faction arrives in the form of a raid entering the map where the refugee appeared. This event will not trigger if the colony doesn't have hostile relations with any faction. The pirate band faction should always be hostile since, by design, any attempt to improve relations with them is disregarded.