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Improved Cleanroom RelauncherMinecraft mod

Improves upon the original Cleanroom Relauncher by automating the first time setup and configuration while also making it more modpack friendly

client only
Latest version
0.3.8
Minecraft
no version declared
Java
follows the game
Loaders
none declared
Licence
MIT
Downloads
10.9k
Updated
6 mo ago
Available on
Modrinth

Download

From Improved Cleanroom Relauncher’s own host. Nothing is re-hosted here.

0.3.8release16 Mar 2026

!improved-relauncher-0.3.8.jar · 0.4 MB · for 1.12.2

Download latest
bd198791cde6…
Older versions8
  • 0.3.74 Mar 20261.12.20.4 MB230 downloads537c52b356f4…Get
  • 0.3.620 Oct 20251.12.20.4 MB4.1k downloads94fc52f7a9ee…Get
  • 0.3.59 Oct 20251.12.20.4 MB61 downloadsda3a1fa18874…Get
  • 0.3.48 Oct 20251.12.20.4 MB23 downloadsf68c90c85143…Get
  • 0.3.38 Oct 20251.12.20.4 MB28 downloadsed70ce17d25e…Get
  • 0.3.24 Oct 20251.12.20.4 MB58 downloadsd51a1f09c56d…Get
  • 0.3.116 Sept 20251.12.20.4 MB88 downloadsae2320f8c6f2…Get
  • 0.3.028 Aug 20251.12.20.3 MB40 downloadsbb941c2cc1d1…Get

Frequently asked

Do I need to install Improved Cleanroom Relauncher on the client or the server?

The client only. There is nothing to install on the server side. That is the author's declared design, not a guarantee for every server: one running anti-cheat or missing a counterpart mod can still object.

What licence is Improved Cleanroom Relauncher under?

MIT, 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 Improved Cleanroom Relauncher?

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 Improved Cleanroom Relauncher 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.

Which Minecraft versions does Improved Cleanroom Relauncher work on?

The author has not declared a supported version in the metadata we sync, so there is nothing here we can state as fact. Check the project's own page before installing it, and treat an old mod with no declared version as untested on modern Minecraft.

Details from Modrinth, where the author last updated it on 16 Mar 2026. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Not indexed yet. Score 51 against a threshold of 55. The page still exists and is still linked; it simply carries noindex until we hold more.

Is this information wrong or missing something? .