
Backrooms Mod
This mod adds new structures and stuff into your game.
Screenshots



About this Mod
iminal Structures – Level 0 in the End (NeoForge 1.21.1)
Liminal Structures brings Level 0 of the Backrooms into Minecraft — not as a new dimension, but as a quiet corruption of The End itself.
Across the End, you’ll find 19 handcrafted, standalone Level 0 rooms, generated as isolated structures. No entities. No chase mechanics. No scripted horror.
Just fluorescent lights. Yellow wallpaper. Endless carpet.
🌫️ Concept
Level 0 appears naturally in the End as rare, structure-based anomalies. Each room is:
Randomly generated
Fully solid
Exploration-focused
Atmosphere-driven
They do not connect — every structure stands alone.
🧱 Blocks & Features
Custom blocks recreate the classic Backrooms aesthetic:
Wallpaper, ceiling tiles, fluorescent lights
Carpet (with slabs and stairs)
Vents and signage
Error blocks (visual anomalies)
Darkness & Darkness Core
Biohazard blocks and fluid (apply Wither)
Functional computer block
Items include:
Almond Water (rare consumable)
Flashlight (real light, subtle flicker)
🎮 Focus
This mod is built for:
Exploration
Liminal atmosphere
Minimalist horror
No new dimension.
No sanity system.
No entities.
Just Level 0, where it doesn’t belong.
Technical
Minecraft 1.21.1
NeoForge
Structure-based worldgen
Multiplayer compatible
Liminal Structures doesn’t try to be loud.
It simply places Level 0 in the End —
and lets you stand in it.
Available Versions
How to Install Backrooms Mod on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set neoforge Loader
In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Backrooms Mod". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Backrooms Mod 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 Backrooms Mod compatible with neoforge?
Backrooms Mod officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Backrooms Mod – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Backrooms Mod 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.
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Rent Modded Server
Install Backrooms Mod with just one click on your server.