Endless Backrooms

Endless Backrooms

One Backrooms mod, one large Backrooms mod

by
6.6K Downloads
fabricforgeneoforgeadventuremobsworldgen
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Screenshots

The Torment
The Manila Room
The Redrooms
The Darkrooms
Level 0
The Dullness

About this Mod

"They say that it's an afterlife–not for people, but for places. For every chain storefront demolished, every retail outlet bought out, every dead mall razed to the ground. A limbo for every building without purpose, those in-between spaces. Endless structures so unfathomable, yet so clearly man-made. Edges in the curtains of memory, corners that open up at the seams of reality to let the unlucky wanderer in.

Be careful out there, for the footsteps that fill these halls may not only be your own."

V0

Endless Backrooms is a mod based on the Backrooms: endless liminal spaces with different levels of difficulty, their own rules, and structures that can be stable or completely chaotic.

The mod is mainly focused on exploration, so it does not add interactive decorative blocks like those in Mr.Crayfish's Furniture or HandCrafted. However, the modpack of the same name uses additional mods for construction. Although these are not included in the base mod, the structures saved in NBT do use them, so they will appear correctly within the modpack.

The project has no defined limit, so the plan is to add as many levels, entities, objects, and mechanics as possible. There will be much more content in the future.

Current Content

Levels

  • Level 0 – The Lobby
    • The Manila Room
    • The Redrooms
    • The Torment
    • The Dullness

Entities

At the moment, there are no entities present in this version of the mod.

Objects

There are currently no objects present in this version of the mod.

Available Versions

[NEOFORGE 1.21.8] Endless Backrooms - 1.0.0.000release
MC 1.21.8neoforge
March 9, 2026
[NEOFORGE 1.21.4] Endless Backrooms - 1.0.0.000release
MC 1.21.4neoforge
March 9, 2026
[NEOFORGE 1.21.1] Endless Backrooms - 1.0.0.000release
MC 1.21.1neoforge
March 9, 2026
[FABRIC 1.21.8] Endless Backrooms - 1.0.0.000release
MC 1.21.8fabric
March 9, 2026
[FORGE 1.20.1] Endless Backrooms - 1.0.0.000release
MC 1.20.1forge
March 9, 2026

How to Install Endless Backrooms 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 (1.21.8).

3

Install Mod

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

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

1.21.8, 1.21.4, 1.21.1 (+1 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Endless Backrooms 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 (1.21.8). You can switch loaders with one click in the panel.

Is Endless Backrooms compatible with fabric and forge and neoforge?

Endless Backrooms officially supports fabric, forge, neoforge for Minecraft 1.21.8, 1.21.4, 1.21.1. 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 Endless Backrooms – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Endless Backrooms 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 Endless Backrooms with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

1.21.81.21.41.21.11.20.1