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Behind the Cubes [Backrooms]Minecraft mod for 1.21.1

Explore interconnected Backrooms levels with unique mechanics, items, and secrets.

newest supported 1.21.1Mc CreatorWorld Dimensions
Latest version
BtC 1.6.10 "Red Rooms Rework"
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
not stated
Downloads
7.0k
Updated
2 mo ago
Available on
CurseForge

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Behind the Cubes [Backrooms] declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

From Behind the Cubes [Backrooms]’s own host. Nothing is re-hosted here.

All 40 releases
BtC 1.6.10 "Red Rooms Rework"release28 Jul 2026

backrooms_a23sd42324b-1.6.10-neoforge-1.21.1.jar · 4.8 MB · for 1.21.1

Download latest
a567d0f1c48a…
Older versions24
  • BtC 1.6 New Textures18 Jul 20261.20.11.8 MB25 downloadsbfb451edffdb…Get
  • BtC 1.6.9 "Level 0 Rework"16 Jul 20261.21.14.7 MB11 downloadsa413602320be…Get
  • BtC 1.6.8.13 Dec 20251.21.14.6 MB10 downloads2e1db886af77…Get
  • BtC 1.6.8 "Trace Drop"31 Oct 20251.21.14.5 MB11 downloadsa293a9f2c85d…Get
  • BtC 1.6.7.217 Oct 20251.21.14.3 MB14 downloads4aab083973fb…Get
  • BtC 1.6.7.13 Oct 20251.21.14.3 MB21 downloads2bb708c1a209…Get
  • BtC 1.6.7 "Concrete Drop"29 Jul 20251.21.14.2 MB22 downloadsc8139999aa27…Get
  • BtC 1.6.6.114 Apr 20251.21.13.4 MB105 downloadsc5ea60294580…Get
  • BtC 1.6.6 "Utility Drop"1 Mar 20251.21.13.3 MB135 downloads6c10e4623f43…Get
  • BtC 1.6.5 "Locked Drop"31 Jan 20251.21.13.0 MB75 downloadsd8726ed3d9e6…Get
  • BtC 1.6.4 "Frozen Drop"30 Dec 20241.21.12.5 MB52 downloads48b45cbd28d9…Get
  • BtC 1.6.330 Nov 20241.21.12.3 MB63 downloads9aebf0f8b554…Get
  • BtC 1.6.230 Oct 20241.21.12.2 MB56 downloads217363ed826b…Get
  • BtC 1.6.126 Sept 20241.20.12.0 MB394 downloads0acd493465da…Get
  • BtC 1.62 Sept 20241.20.11.8 MB290 downloads863c68c47876…Get
  • BtC 1.5.624 Aug 20241.20.12.4 MB94 downloadsd578cd87da4b…Get
  • BtC 1.5.527 Jul 20241.20.12.3 MB100 downloads9b0b234591f6…Get
  • BtC 1.5.428 Jun 20241.20.12.2 MB106 downloads046225a2d40f…Get
  • BtC 1.5.3.215 Jun 20241.20.12.2 MB83 downloads229d0d740d17…Get
  • BtC 1.5.3.15 Jun 20241.20.12.2 MB71 downloadse47459934109…Get
  • BtC 1.5.331 May 20241.20.12.2 MB66 downloadseeeebe07dc53…Get
  • BtC 1.5.2.127 May 20241.20.12.2 MB36 downloads48284e8313eb…Get
  • BtC 1.5.213 May 20241.20.12.1 MB97 downloadsf16a8d3ef8a8…Get
  • BtC 1.5.1.214 Apr 20241.20.12.1 MB104 downloadsc81932243a0a…Get

Frequently asked

Does Behind the Cubes [Backrooms] work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Behind the Cubes [Backrooms] declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Behind the Cubes [Backrooms] support?

Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does Behind the Cubes [Backrooms] support?

Forge, NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Behind the Cubes [Backrooms]?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

How do I install Behind the Cubes [Backrooms]?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Behind the Cubes [Backrooms] safely?

Start with the author's page on CurseForge, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Details from CurseForge, where the author last updated it on 28 Jul 2026. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .