Nether Depths Upgrade

Nether Depths Upgrade is a small mod that adds some extra flora and fauna to the lava seas of the nether. A total of nine fish have been added, a new enchant and potion in order to explore the lava in the nether.

3.2M Downloads

fabricforgeneoforgefoodmobsworldgen

Rent Server with this Mod

Screenshots

About this Mod

Nether Depths Upgrade is a small mod that adds some extra flora and fauna to the lava seas of the nether. A total of nine fish have been added, a new enchant and a potion in order to explore the lava in the nether.

Dependencies

Geckolib 3.0

Available Versions

Nether Depths Upgrade fabric-3.2+1.21.1release

MC 1.21, 1.21.1fabric

August 21, 2026

Nether Depths Upgrade 3.2release

MC 1.21, 1.21.1neoforge

August 21, 2026

Nether Depths Upgrade 3.1.9+1.21-fabricrelease

MC 1.21, 1.21.1fabric

April 16, 2025

Nether Depths Upgrade 3.1.8release

MC 1.21, 1.21.1neoforge

April 16, 2025

Nether Depths Upgrade 3.1.7 - 1.21release

MC 1.21, 1.21.1neoforge

September 1, 2024

How to Install Nether Depths Upgrade on Your Server

Order Server

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

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).

Install Mod

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

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

1.21.1, 1.21, 1.20.1 (+6 more)

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Nether Depths Upgrade 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 (1.21.1). You can switch loaders with one click in the panel.

Is Nether Depths Upgrade compatible with fabric and forge and neoforge?

Nether Depths Upgrade officially supports fabric, forge, neoforge for Minecraft 1.21.1, 1.21, 1.20.1. 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 Nether Depths Upgrade – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Nether Depths Upgrade 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.