How do I install NetherEx?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does NetherEx work with?

The listing gives Minecraft 1.21.4, 1.21.1. This is the version stated by the author or source site, not something we verified ourselves.

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NetherEx

by LogicTechCorp · on CurseForge

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Mod loader Fabric2 builds
Mod loader NeoForge2 builds

Minecraft version

Minecraft 1.21.4Newest
Minecraft 1.21.1

Minecraft 1.21.4Newest
Minecraft 1.21.1

⬇ Download for 1.21.4 · Fabric ⬇ Download for 1.21.1 · Fabric ⬇ Download for 1.21.4 · NeoForge ⬇ Download for 1.21.1 · NeoForge

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

Nether header

Overview NetherEx is a mod designed to expand on and enhance the feel of the Nether. It adds new biomes that are filled with new blocks, items, and mobs. It also adds new content to the already exisiting Nether biomes.

Links If you have any questions or would like to discuss the mod, feel free to join the mod discord server here.

If you would like to support me, please visit my Ko-fi page here.

Need a server? Click the banner below to get a server with BisectHosting! Use code 'Logic' to support me and get 25% off your first month. Don't see a banner? Then click this link: https://bisecthosting.com/logic

Versions prior to 1.21.4 require a library mod called LibraryEx which can be found here. Previous versions of NetherEx are compatible with Biomes O' Plenty (1.12, 1.14, and 1.15), Oh The Biomes You'll Go (1.15), and Extended Nether Backport (1.15).

Credits Fish2, Eleazzaar, Nazenn, Angelz/Demonly, Vlakk, AnarchCassius, LapisWhovian, misterslime, Vivi, Cameron, rye, SnakeBlock, hatsondogs, Endergy, Farcr, Adeline, SirBaconFace, Yapetto, enri, crispytwig, Nitpick/Olive, ZucchiniByDay, JadenXgamer, and Jamiscus.

Thank you for your support

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.4, 1.21.1
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.

Verified by MCModsHub

Ships as NetherEx-1.12.2-2.0.15.jar — drop this file into the mods folder
Download size: 2.6 MB
Download link checked 8 Sept 2026 — working

These come from our own check of the pack file, not from the source page.

📺 Java videos for NetherEx watch on YouTube ↗

YouTubeTop 200 Best Mods for Minecraft 1.12.2 [EPISODE 7][Better Diving, NetherEx, The Aether]PwrDown

YouTubeNETHEREX MOD - MINECRAFT 1.12.2 (MOD SHOWCASE)UltraUnit17

🎬Made a video about NetherEx? Feature it #1 here for free — put the mcmodshub.com link near the top of your description, or in a pinned comment.→

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