True Darkness Biomes
by Qsmium
True Darkness Biomes is a fork of True Darkness that lets the darkness effect be defined per biome, for Forge and NeoForge.
What it does
Where the original True Darkness makes caves completely dark, this fork ties the effect to a list of biomes. A darkness-biomes.json file is generated the first time a world is opened, and the author chose to define biomes exclusively for True Darkness, inverting the original behavior. Biomes such as lush caves can be added to an exclusion list, and entries follow Minecraft's standard biome naming.
The fork was made because the original True Darkness conflicted with other mods that add caves, especially their primordial cave biomes. The mod is unofficial and was built on the original mod by GrondagTheBarbarian. The client-side environment means only the client needs it, and the project is released under the GNU Lesser General Public License v3.0 only, so it is open source. Files are published for Forge and NeoForge across six release versions, 1.20.1 – 1.21.1, with 1.0.2 for 1.20.1 as the latest Forge file and 1.2.1 for 1.21.1 as the latest NeoForge file. The NeoForge build is in the beta channel.
Key features
Per-biome darkness
The darkness effect is applied only inside the biomes listed in the configuration file.
Generated biome list
darkness-biomes.json is created after the first world load, so biomes can be edited without writing code.
Exclusion list
Biomes such as lush caves can be excluded, so they keep their normal lighting.
Standard biome naming
Biome entries use Minecraft's standard naming, so modded biomes can be added by their identifiers.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Caves with other biome mods
Players who run other cave-adding mods alongside darkness caves can limit the effect to chosen biomes instead of the whole world.
Who it’s for: Players and server owners who want the original True Darkness effect limited to certain biomes. The mod is most relevant on Forge 1.20.1 and NeoForge builds, since future updates above 1.20.1 are planned only for NeoForge.
Questions
Does True Darkness Biomes need the original True Darkness?
Which loader should be chosen for Minecraft 1.21.1?
Does it have to be installed on the server?
Where can problems be reported?
In the catalog
True Darkness Biomes is one of 19,031 Adventure mods on ModsFinder, and one of 10,478 Adventure mods for Forge. 32,366 mods support Minecraft 1.21.1.
More from Qsmium
Similar mods
What the author says
This was made because the other Fork for Forge 1.20.1 was not Open Source, otherwise this wouldve probably been a Mixin Mod and not a complete Fork. This Mod allows you to define biomes in which there should be no True Darkness, or if you so desire invert the behavior and define which biomes should have exlusively…
Official listing
- Modrinth page
- modrinth.com/mod/true-darkness-biomes
- Owner
- Qsmium
- Published
- 2024-05-31
- Updated on Modrinth
- 2026-04-04
- Facts verified
- 2026-10-15