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SecretRooms-UnofficialMinecraft mod for 1.21.1

Secret Rooms mod, now ported to 1.20.1, 1.21.1 by bay4lly! Features fully functional camouflage blocks, Ghost Blocks, and hidden Redstone. Optimized rendering and bug-free performance for the ultimate stealth experience. Unofficial & high-performance.

client and servernewest supported 1.21.1Decoration
Latest version
1.21.1.20260702
Loaders
NeoForge, Forge
Licence
GPL-2.0-only
Downloads
14.0k
Updated
3 mo ago
Available on
Modrinth
Space NodeOur hosting

Host SecretRooms-Unofficial servers

One click and SecretRooms-Unofficial is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • Forge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version SecretRooms-Unofficial declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Forge21+declared8 Aug 2024
1.21NeoForge, Forge21+declared13 Jun 2024
1.20.4Forge, NeoForge17+declared7 Dec 2023
1.20.3NeoForge, Forge17+declared4 Dec 2023
1.20.2NeoForge, Forge17+declared20 Sept 2023
1.20.1NeoForge, Forge17+declared12 Jun 2023
1.20Forge, NeoForge17+declared2 Jun 2023

Download

From SecretRooms-Unofficial’s own host. Nothing is re-hosted here.

1.21.1.20260702beta2 Jul 2026

SecretRooms-1.21.1-Unofficial-20260702-beta-fixedrecipes.jar · 0.4 MB · for 1.21.1, 1.21

Download latest
b89d390434e8…
Older versions8
  • 1.20.1-2026051010 May 20261.20.10.4 MB3.5k downloads6cf15e5aec05…Get
  • 1.20.1-2026020131 Jan 20261.20.10.4 MB3.1k downloads4b8474f0aa3f…Get
  • 1.20.1.20260128_b28 Jan 20261.20.10.4 MB193 downloads55ec679503fb…Get
  • 1.21.1.2026012828 Jan 20261.21.1, 1.210.4 MB2.7k downloads68f8e0d9eb85…Get
  • 1.20.1.2026012827 Jan 20261.20.10.4 MB55 downloads68554620df25…Get
  • 1.20.1.2026011818 Jan 20261.20.10.4 MB246 downloads3d6e6eec7712…Get
  • 1.20.1.2026011716 Jan 20261.20.10.4 MB166 downloads82a7bff07428…Get
  • 1.014 Jul 20251.20.4, 1.20.3, 1.20.2, 1.20.1, 1.200.8 MB3.7k downloads00df2e17c6df…Get

Frequently asked

Does SecretRooms-Unofficial work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version SecretRooms-Unofficial 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 SecretRooms-Unofficial support?

Everything the author has declared, from 1.20 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install SecretRooms-Unofficial on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does SecretRooms-Unofficial support?

NeoForge, Forge. 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 SecretRooms-Unofficial?

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.

What licence is SecretRooms-Unofficial under?

GPL-2.0-only, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install SecretRooms-Unofficial?

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 SecretRooms-Unofficial safely?

Start with the author's page on Modrinth, 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.

Details from Modrinth, where the author last updated it on 2 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? .