The Afterdark

The Afterdark

A truly immersive Deep Dark alternative dimension with many secrets and resources hidden behind. Explore a new world brought to you from the evil of the Deep Dark.

by
221.6K Downloads
fabricforgeneoforgequiltadventureworldgen
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Screenshots

The Afterdark Screenshot 1
The Afterdark Screenshot 2
The Afterdark Screenshot 3
The Afterdark Screenshot 4
The Afterdark Screenshot 5
The Afterdark Screenshot 6

About this Mod

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Available for Fabric, Forge and NeoForge near you.

It is recommended to use Noisium and/or C2ME with The Afterdark for better performance and playability.

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Overview

The Afterdark is a mod that adds a truly hardcore, 384 blocks tall and dark dimension, where you can gather massive amounts of resources, but still in a bit discougerable way. Some resources can be found only through the specific Afterdark biomes, or even through the dungeons. High worldgen complexity makes your journey a bit complicated, but fun and rewarding, rather than boring.

While we're still working on the diversity of the biomes, there are already 8 biomes perfectly fitting the idea of the true deep dark. You can check out the biomes in the Gallery section.

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How to get to The Afterdark?

While adventuring, you can notice a new structure near the Ancient City with the strange pulsating portal around it, that asks you for some sort of a crystal that may be left by magicians years ago somewhere in the chests nearby. When you right-click the portal with the crystal, you'll be teleported to the Afterdark, where your true hardcore-ish journey begins. There are no portal back being spawned. You need to find Darkest City and teleport back by the same portal structure or find another way to go outside the dimension. (Maybe some other dimensions may help you?)

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Credits

Special thanks to:

  • VeiTr, who helped with the structure code and some modelling stuff, while I was working on the idea of the dimension.
  • Apothicon, who created Ecospherical Expansion, so I could figure out how the worldgen datapacks work, how to create different configured and placed features.

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License and Modpack Usage

You can use the mod in any modpack and do whatever you want as long as LGPLv3 license is not violated.

Some small modified parts of the Ecospherical Expansion present in The Afterdark. Ecospherical Expansion is licensed under MIT License.

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FAQ

Q: Do you have any plans updating the mod to 1.x?

A: If the next major update didn't destroy the whole worldgen flaw, then probably yes. Otherwise, maybe I'll stick to a version for some time providing bugfixes and new features and figuring out the changes. Currently we're going to support both 1.20.1 and 1.21.1 versions atleast, once we will feel, that the most features are stable and playable. If you would like to contribute to the project, you can send a PR.

Q: Is the mod compatible with Terralith, Geophilic, any other worldgen mod?

A: In most cases, yes. There shouldn't be any issues, because these biomes are located in the dimension, not modifying the Overworld, Nether or any other dimension.

Q: I would like to add compat with The Afterdark! How can I do this?

A: We're still working on the dimension, however you can use #the_afterdark:afterdark_biomes tag if you wish to allow the structure to be spawned in this dimension. If you wish to add something complex and you need some assistance with adding a mod integration with The Afterdark, feel free to open an issue and we'll try to sort it out.

Available Versions

[Fabric] The Afterdark v1.0.3.1release
MC 1.21.5fabric
September 12, 2025
[NeoForge] The Afterdark v1.0.3.1release
MC 1.21.5neoforge
September 12, 2025
[Forge] The Afterdark v1.0.3.1release
MC 1.21.5forge
September 12, 2025
The Afterdark 1.0.3.1release
MC 1.21.4neoforge
December 6, 2024
The Afterdark 1.0.3.1release
MC 1.21.4forge
December 6, 2024

How to Install The Afterdark on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.5).

3

Install Mod

Open the mod browser in the dashboard and search for "The Afterdark". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforgequilt

Minecraft Versions

1.21.5, 1.21.4, 1.21.3 (+6 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

The Afterdark server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.5). You can switch loaders with one click in the panel.

Is The Afterdark compatible with fabric and forge and neoforge and quilt?

The Afterdark officially supports fabric, forge, neoforge, quilt for Minecraft 1.21.5, 1.21.4, 1.21.3. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with The Afterdark – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if The Afterdark 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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Recommended RAM
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Details

License
GNU Lesser General Public License v3.0 or later
Server-side
Required

Supported Versions

1.21.51.21.41.21.31.21.11.20.41.20.31.20.21.20.11.20