
True Darkness Biomes
Fork of True Darkness made to have Biome Dependant Darkness and updated up to Forge 1.20.1 and Neoforge 1.21
About this Mod
Fork to 1.20.1+
This is an unofficial Fork of the Original True Darkness Mod by GrondagTheBarbarian.
The Original Mod can be found here: https://modrinth.com/mod/true-darkness
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.
If you dont need the Biome Support and dont need a Version above 1.20.1 and dont care about Open Source you should probably pick the other Fork found here because im quite inexperienced with Minecraft Modding and their Version is likely to be better: https://modrinth.com/mod/true-darkness-forge-updated-fork
Future Updates above 1.20.1 will only be on Neoforge
Biome Support
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 True Darkness.

This mod largely came to be from the "incompatiblity" between True Darkness and AlexsCaves, especially the Primordial Caves, which otherwise would be completely dark. However you can also add other biomes like the lush caves to the exclusion list.
Add your Own Biomes
The Mod allows any kind of biome to be added so long as they conform to minecrafts standard biome naming. Simply add the biomes to the "darkness-biomes.json" which should generate after the first time you open a world.
This is how a simple config would look:
{"Biomes":["minecraft:lush_caves","alexscaves:primordial_caves"]}
Issues
If you encounter any issues report them on my Github
Available Versions
How to Install True Darkness Biomes on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "True Darkness Biomes". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.21, 1.20.4 (+3 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
True Darkness Biomes server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is True Darkness Biomes compatible with forge and neoforge?
True Darkness Biomes officially supports forge, neoforge for Minecraft 1.21.1, 1.21, 1.20.4. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with True Darkness Biomes – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if True Darkness Biomes consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install True Darkness Biomes with just one click on your server.