RimWorld Mods

Biomes! Caverns Mod

Author of the Biomes! Caverns Mod: Draegon1993

Say hello to the new and improved Biomes! Caverns! With a full host of new content and improvements over the old one, you’ll have plenty to sink your mod-loving teeth into. This mod adds 4 unique underground biomes with more to come, each with their own life forms and features both extremely useful, and horribly horribly hazardous for your pawns’ continued existence!

Biomes! Caverns Mod features

The following infographics will give you a taste of the features present in each biome. You will discover more features as you explore them in-game!

  • 4 new underground biomes
  • Over 50 new animals, from battle animals to pets to packs
  • Over 20 new plants and fungi
  • Caverns-exclusive events
  • Multiple new resources, from stony to textile
  • Many new crops to grow in the darkness
  • New music by Dendroid!
  • Some new trophy items from tough creatures!
  • Full integration of the Caveworld Flora mod

Additional credits:

Mod director & artist: Draegon
Dendroid: Sounds & Music
Joseasoler: XML and C#
M00nlight: XML and C#
Zylle: XML and C#
Xeye: XML and C#
Sergkart: XML and C#
Fluffy: Art and Caveworld flora content
Detvisor: Art
Odzman: Art
Elseud: Art
Pphhyy: Art
SirVan: Art
Luizi: Art
Immortalus: Art
Austrinus: Art
ItsHalno: Art

Japanese translation by Lucifel

Special thanks:
Jecrell: Many thanks to him for the amazing Biomes! word logo design.
Vowels for considerable help with the animal descriptions
Elseud for the new Biomes! preview images.
Steve o.O for the new crystal and cooled magma terrain!
Taranchuck for some custom special code.
RangerRick for help with the discord.

Compatibility notes

Vanilla Fishing Expanded – Unique fish when fishing in any underground biome

Royalty DLC – Custom anima tree texture
Ideology DLC – Custom gauranlen tree texture
Biotech DLC – Custom Polux tree texture


Q: Do I need Biomes! Core for this?
A: Yes, all Biomes! mods require Core

Q: Is it CE compatible?
A: Not yet, but we have someone that will work on this for us!

Q: Is it safe to add mid-game?
A: Probably, but the biomes won’t spawn

Q: Why do I need Geological Landforms for this to work?
A: M00nlight did a ton of work for us and much of it is in the GL code!

Q: Do raids and caravans still work in caverns biomes?
A: Yes, they will function as normal, though drop pod ones will use a unique kind of pod!

Q: Why does this mod make impassable mountains passable?
A: Because cavern biomes only spawn in them! Otherwise it would be impossible to caravan out. (Travel through them is extremely slow outside of caverns biomes, so your caravans will still choose the fastest route)

Q: Will there be more content added in the future?
A: Yes! We have at LEAST two new cave biomes in the works 😀

Q: Where can I find info on the content?
A: Right here!: https://github.com/biomes-team/BiomesCaverns/wiki

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