Backrooms Through The Walls
Adds level 0, level 1, and the bacteria entity.
About this Mod
Adds backrooms level 0 and 1, and the bacteria entity can be entered by no clipping. Level 0 has its own separate inventory, so you won't have any items and can't place any blocks. In level 1, you will have your items and be able to build and do whatever. Has a custom shader that auto-installs; you must apply it when in the dimension, as the shader is currently in a pretty broken state, but it still works. The shader base is Spooklementary. All images posted in here are of testing other shaders for possible future levels or what ever.
This mod is in beta and heavly buggy.
REQUIRES SODIUM AND IRIS SHADERS
Available Versions
How to Install Backrooms Through The Walls on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 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 "Backrooms Through The Walls". 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 Through The Walls 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 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 Through The Walls compatible with fabric?
Backrooms Through The Walls officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Backrooms Through The Walls – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Backrooms Through The Walls 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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