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Call of Cthulhu - Cosmic Horrors
File Size
12.940 MB
Sep 18, 2016 @ 6:57am
Mar 7 @ 11:22pm
60 Change Notes ( view )

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Call of Cthulhu - Cosmic Horrors

In 1 collection by Jecrell
Call of Cthulhu - Rim of Madness Expansion Pack
20 items
*Add Lovecraftian monsters to your RimWorld experience!* There is a lingering fear that strokes the hairs on the back of the necks of your colonists. Something terrible is coming, and there is little time to prepare. Cosmic horrors are already upon us.

This is an attempt to create the minor races of H.P. Lovecraft's weird fiction mythos in the RimWorld engine. Some behave the same as hostile factions that raid colonies such as mechanoids or insectoids. Others can be deadlier, however.

Adds the following cosmic horrors to your game:
  • Star-Spawn of Cthulhu
  • Shoggoths
  • Mi-Go
  • Deep Ones
  • Star Vampire
  • Dark Young
  • NEW Chthonian

You will need to start a new game OR for previously saved games without monsters, you can try using Orion's Faction Discovery Mod
*phew* Now that that's out of the way. Onto the notes section!

  • Each monster has its own unique anatomical skeletons, organs, and body parts. Some special powers were given to psionic beasts.
  • Each monster has special sound effects.
  • More creatures will be added in a second update in the near future. A third update will flesh out these cosmic horrors with true special abilities true to their literary counterparts.
  • Since I am one person, I can't attest to how balanced the monsters are, and I am definitely looking for feedback from player experiences. Let me know how they are in your game.

Update 1.3
  • Dark Young and Dark Young Herd incidents added to the game.
  • Greater Deep Ones added to the game.
  • Star Vampires rebalanced to be more numerous at higher difficulties.
  • All cosmic horrors have age ranges from Spawn to Eldritch.
  • Sanity loss effects now apply when observing Cosmic Horrors.
  • Mood loss effects now apply when observing Cosmic Horrors.
  • Sanity Loss effects further rebalanced

Call of Cthulhu Mods
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Credited Sources

Have fun!

Still there?
Jecrell here, lead programmer of the Call of Cthulhu mod series.

Want to buy me a coffee? Fuel my madness for mods here below.
Popular Discussions View All (26)
Jun 13 @ 9:27am
Ideas & Suggestions
Jun 30 @ 11:19pm
(1.1, latest) Shoggoths sprite rotation causes ??? to appear.
Angela™ ᚲᛃᚱᛁᛖᛚ᛭
Aug 8, 2018 @ 4:45am
Dark Young throw an error whenever they try to attack something
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huge admirer of mudkipz Jul 12 @ 5:03am 
Mi-Go doesn't fit the game at all. Needs a new sprite imo. But good mod.
Emelio Lizardo Jul 6 @ 7:44pm 
I find I can\t perform surguries on my horrors. Is that intended or a load order problem?
iAmInHere (PA2) Jun 26 @ 5:35am 
Was this ubdated?
❂Jamie❂ Jun 22 @ 6:23pm 
Anyone know what you can actually do with Cthonian Larva? I've checked in DevMode their age to adulthood and it says 0, so it looks like it won't actually ever grow into those giant worm things? Is there actually any point having them?
lilwhitemouse Jun 18 @ 7:32pm 
It does need an update, but haven't heard anything from authors and they don't let anyone else work on their code :(
Soviet Union 4U Jun 18 @ 2:20pm 
Anyone know of any darkness mods that are current? Also I think this one needs an update :(
Morhem Jun 10 @ 4:28am 
I'm having trouble with raids: I dont get much of them. I have Almost entire Rim Of Madness, and I also installed Rimsenal, primarily for more factions.. but apart from some starting raids, I only get Deep Ones. And not a lot of those too.. Game grows stale without a challenge. It's not a 1.1 issue. Had it since forever.
SOFA H3ro Jun 8 @ 1:54pm 
Is anyone else having issues with the Elder Thing Bed, once built I cannot interact with them. This includes deconstructing, reinstalling, assigning owner, or setting the bed type. They display their build quality and have a beauty value, and all the typical bed options display but do not interact. The item discription is also a bunch of code, so it may just be that there is one missing character causing the bug.
GONADS AND STRIFE May 27 @ 10:10pm 
Star Vampires either don't spawn in when the event happens, or they sit at the map edge and starve to death. I'm assuming this is do to 1.1 lol
Canadian Toast May 22 @ 5:57pm 
Any plans to update this in the future?