Endless Backrooms: Extensions

Endless Backrooms: Extensions

Just an addon for a backrooms mod

by
149 Downloads
neoforgegame-mechanicstechnology
Rent Server with this Mod

About this Mod

Endless Backrooms: Extensions is an addon for the Endless Backrooms mod, which is compatible with the Create and Farmer's Delight mods; more integrations will be added in the future.

This mod was designed to be updated after every Endless Backrooms update, but from time to time I’ll release updates before Endless Backrooms itself is updated.

This is a test version to demonstrate future mechanics that won’t be able to be implemented within the main mod.

We're open to suggestions on what these items might be used for

Available Versions

[Neoforge] Endless Backrooms: Extensions – 0.3.0.000beta
MC 1.21.1neoforge
June 28, 2026
[Neoforge 1.21.1] Endless Backrooms: Extensions – 0.2.0.000beta
MC 1.21.1neoforge
June 26, 2026
[Neoforge 1.21.1] Endless Backrooms: Extensions – 0.1.1.000beta
MC 1.21.1neoforge
June 25, 2026
[NeoForge 1.21.1] Endless Backrooms: Extensions – 0.1.0.000beta
MC 1.21.1neoforge
June 25, 2026

How to Install Endless Backrooms: Extensions 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 (1.21.1).

3

Install Mod

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

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Endless Backrooms: Extensions 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 (1.21.1). You can switch loaders with one click in the panel.

Is Endless Backrooms: Extensions compatible with neoforge?

Endless Backrooms: Extensions officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Endless Backrooms: Extensions – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Endless Backrooms: Extensions 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: Extensions with just one click on your server.

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

Details

License
MIT License
Server-side
Required

Supported Versions

1.21.1