How do I install Planetmax's The Backrooms?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does Planetmax's The Backrooms work with?

The listing gives Minecraft 1.21.8, 1.20.1. This is the version stated by the author or source site, not something we verified ourselves.

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Planetmax's The Backrooms

Java mod listed for Minecraft 1.20–1.21. File opened and checked on 18 Oct 2026; downloads from the MC Java Mods app on Android.

by FruitgerAeroMan · on CurseForge

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Mod loader NeoForge1 build
Mod loader Forge1 build

Minecraft version

Minecraft 1.21.8Newest

Minecraft 1.20.1Newest

⬇ Download for 1.21.8 · NeoForge ⬇ Download for 1.20.1 · Forge

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

Planetmax's The Backrooms — screenshot 1

Planetmax's The Backrooms — screenshot 2

The Backrooms, a liminal prison of even .escape. Now In Minecraft! Journey through levels 0 to 37! More levels are coming soon!

You can enter level 0 with a portal and lighter (In the backrooms tab) The other levels have not been made a Level yet, only the blocks, there are two creatures, Stall and Cube. I can't make a video trailer cause I don't have a YouTube channel, so yeah. If there are any glitches or bugs, report them in the comments. Big inspiration comes from SwiftBit's Minecraft backroom videos.

The new updates will not be based on the old versions, they will be under a new name called BackroomsDX.

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.8, 1.20.1
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Ships as the_backrooms-1.0.0-forge-1.20.1.jar — drop this file into the mods folder
Download size: 246 KB
Download link checked 18 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.21 Java mods for 1.20