Subnautica After Zero

Subnautica After Zero

This mod is a continuation of the Subnautica Franchise in minecraft with an all new story set after below zero!

by
4.0K Downloads
neoforgeadventuremobstechnology
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Screenshots

Thumbnail
Encounter Aliens!
Avoid~ the void...
SafeShallows
Vent Gardens
Lilypads

About this Mod

title

[Please Read Before Installing]:

Note for the release of subnautica 2

Ive reacently played subnautica 2 its sorta inspiring me to come back to the project i haven't been touching this project as of recently due to the time it sorta went sloppy and just became and overaly mess... as ive been working on it all by myself im looking for anyone who works inside of mcreator, block bench, Axiom world building or voice acting if your skilled in anyone of these skillsets considering joining the discord and hitting me a DM ill prob be resurecting the project in the coming month so expect some news in the next 1-2 mounths

PLEASE JOIN THE DISCORD IF YOU HAVE ONE OF THESE SKILL SETS TO JOIN THE FUTURE DEV TEAM

- Experince in World building (world edit or axiom)

  • Mcreator
  • Voice acting
  • Block Bench
  • Texturing
  • Lore building/writing (Scripts Lore wise yk that kinda stuff)

Before you play!

Subnautica After Zero is a story mod set a couple years after the events of Subnautica Below Zero and is not intended to be played on its own, it is heavily recommened you download the map to play the full content of the story

This mod is still a work in progress, you may experiance bugs and issues along the way make sure to report them in our discord

What does this mod add?

Subnautica After Zero adds plenty of features for the orignal two subnautica game though not identical they are quite heavily similiar from things such as fish, tools, biomes and ect. - take a look in Gallery to get a better look at what you'll be installing

Where can I download the map?

The map can be downloaded on planet minecraft Download Here and is recommend you install the modpack Download Here instead as it compiles the mod, reasourcepacks and the map all together

[TAKE NOTE THAT THE MAP IS MEANT TO ONLY BE PLAYED WITH 2-4 PLAYERS NO MORE NO LESS]

Can I add this to my own modpack?

Unforentaly no, well I mean you can but the mod was specificly made in mind to work with a set map Download Here, you can install it onto your own worlds but some things might not work correctly

Join My Discord
Visit My YouTube

Available Versions

Subnautica After Zerorelease
MC 1.21.8neoforge
March 23, 2026
Subnautica After Zerorelease
MC 1.21.1neoforge
March 9, 2026

How to Install Subnautica After Zero on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.8).

3

Install Mod

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

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.8, 1.21.4, 1.21.1

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Subnautica After Zero server crashes on startup – what to do?

Most common cause: wrong neoforge 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 (1.21.8). You can switch loaders with one click in the panel.

Is Subnautica After Zero compatible with neoforge?

Subnautica After Zero officially supports neoforge for Minecraft 1.21.8, 1.21.4, 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Subnautica After Zero – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Subnautica After Zero 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.

Rent Modded Server

Install Subnautica After Zero with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
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1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Required

Supported Versions

1.21.81.21.41.21.1