CurseForge · Minecraft mod
Not So Deep Dark
This mod adds 5 new biomes, several resources, 4 new tool sets, 3 sets of armor, and more!
Quick answer
Which Not So Deep Dark release should I use?
Not So Deep Dark not_so_deep_dark-1.3.0-neoforge-1.21.4.jar targets 1.21.4 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Not So Deep Dark required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Not So Deep Dark not_so_deep_dark-1.3.0-neoforge-1.21.4.jar need?
not_so_deep_dark-1.3.0-neoforge-1.21.4.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Not So Deep Dark without breaking your instance.
Built for Not So Deep Dark not_so_deep_dark-1.3.0-neoforge-1.21.4.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use not_so_deep_dark-1.3.0-neoforge-1.21.4.jar. It targets 1.21.4 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside not_so_deep_dark-1.3.0-neoforge-1.21.4.jar. It opens that exact file at the source.
About this project
What does Not So Deep Dark add?
This mod aims to expand on the deep dark and sculk as a whole, with it being the basis for basically everything you will find.
An echo geode, for example:

One of the new armor sets:
Along with 4 new tool sets, but you'll have to play to see those! ;)
Have any ideas or feedback about the mod? Join the Discord!
THIS MOD IS IN VERY EARLY BETA, SOME THINGS MAY NOT WORK
Project description from CurseForge.
Pick your setup
Not So Deep Dark by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Not So Deep Dark versions and loaders
not_so_deep_dark-1.3.0-neoforge-1.21.4.jar
7 Jul 2025
not_so_deep_dark-1.2.1-neoforge-1.21.4.jar
6 Jul 2025
not_so_deep_dark-1.2.0-neoforge-1.21.4.jar
3 Jul 2025
Looking for an older file? The official CurseForge project page is in Resources.