Minecraft 1.20.1 · Fabric · 47 mods

BACKROOMS
FOUND FOOTAGE

You noclipped out of reality. Now there's only wet carpet, buzzing fluorescent lights, and whatever else got in here with you.

Step 1 — the server

backrooms.parallex.in checking…

No port number needed. Cracked accounts are fine — use the same name you use on Ironvale, or the whitelist will refuse you.

This is a Fabric pack, not Forge. It has nothing to do with Mightypear — different loader, different mods, separate world. Don't mix the two mod folders.

Step 2 — get the pack

Everyone must use this exact build

All three downloads contain the identical 47 mods, built straight from the official .mrpack. Pick whichever suits your launcher — you'll match everyone else either way.

.mrpack13.3 MB · Prism / Modrinth App

Smallest. Downloads the mods itself. Use this if you can.

Download .mrpack
Prism .zip215 MB · every jar inside

Self-contained instance. Use if the .mrpack import fails or you're offline.

Download .zip
Mods .zip202 MB · manual install

Just the mods + configs, for TLauncher / SKlauncher / official launcher.

Download mods

Checksums: SHA256SUMS.txt

Easy path

Prism Launcher

  1. Install Java 17 — let Prism fetch it if it offers.
  2. Add Instance → Import → pick the .mrpack (or the Prism .zip).
  3. Launch it, then add the server backrooms.parallex.in.

Memory is preset to 4 GB. Don't raise it past half your system RAM — on an 8 GB laptop, 6–8 GB starves the OS and makes framerate worse.

TLauncher · SKlauncher · official

Manual install

None of those can import a modpack file, so the mods go in by hand. Grab Backrooms-FF-1.0.8-mods.zip for this — not the Prism zip.

  1. Install Java 17.
  2. Install Fabric for 1.20.1 — loader 0.19.3. Get the installer from fabricmc.net/use. Fabric, not Forge. TLauncher can also install Fabric from its own version list.
  3. Open .minecraft — Windows %appdata%\.minecraft, macOS ~/Library/Application Support/minecraft, Linux ~/.minecraft.
  4. Empty any existing mods folder, then copy this zip's mods folder in — you should end up with 47 jar files.
  5. Copy the config folder in too. The pack needs those settings to behave correctly.
  6. Set memory to 4 GB and launch the Fabric 1.20.1 profile.

What you're installing

What's inside

The core is Minecraft Backrooms Found Footage by SpacePotato — the real mod, 2.28 million downloads, at its current version 1.1.8. This pack is onr23's curation around it, which is the most-used Backrooms pack on Modrinth.

  • The Backrooms itself — levels, entities, the found-footage camera.
  • Simple Voice Chat — proximity voice, already included. Press V to pick your mic. Hearing someone breathing down a corridor is the point.
  • Sound Physics Remastered — real reverb and occlusion. Do not play this without headphones.
  • Enhanced Visuals + horror messages — the atmosphere layer.
  • Performance set — Krypton, VMP, ModernFix, FerriteCore, EntityCulling, ThreadTweak, ImmediatelyFast, BadOptimizations.

32 of the 47 run on the server; the other 15 are client-only (visuals, HUD, menus). You install all 47 — that's normal.

When it breaks

Problems

What you seeWhat it means
Server shows OFFLINE above It's manual-start. Ask an admin to bring it up.
Crash on startup, or mods not loading You installed Forge instead of Fabric. This pack is Fabric 1.20.1.
"You are not white-listed" Wrong username — use your Ironvale name exactly.
Kicked on join / mod mismatch Your pack doesn't match. Re-download from this page; don't add or remove mods.
Crash right after "Loading mods" Old mods left in .minecraft/mods. Empty it and copy ours in fresh.
Terrible FPS Drop render distance to 6–8 first. This pack is heavier than vanilla.
Nobody can hear you Wrong microphone. Press V and pick the right input device.