Menu

mod

Unknown5473libMinecraft mod for 1.21.4

A universal code library prerequisite for mods created by Unknown5473,Provides a Boss mob template library and screen effects..

client and servernewest supported release 1.21.4Library
Latest version
1.0.0.4-e-fix
Loaders
Forge, NeoForge
Licence
LicenseRef-All-Rights-Reserved
Downloads
230.3k
Updated
2 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Unknown5473lib servers

One click and Unknown5473lib is installed with the right loader, on hardware built for it.

  • 1.21.4
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Unknown5473lib declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.4Forge, NeoForge21+declared3 Dec 2024
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

From Unknown5473lib’s own host. Nothing is re-hosted here.

Most recently published release

1.0.0.4-e-fixbeta23 Aug 2026

Unknown5473lib-1.21.4-NeoForge-1.0.0.4-e-fix.jar · 0.3 MB · for 1.21.4 · NeoForge

Download this release
66ca37969acb…
Older versions6
  • 1.0.0.4-d6 Jul 20261.21.40.3 MB13.4k downloadsef5933a04e9d…Get
  • 1.0.0.4-c21 Mar 20261.21.40.3 MB27.0k downloads1863dda8ea8b…Get
  • 1.0.0.4-b1 Feb 20261.21.40.3 MB32.6k downloads70bbda88a5e2…Get
  • 1.0.0.431 Dec 20251.21.40.3 MB27.5k downloads51af846dbe62…Get
  • 1.0.0.13 Oct 20251.21.40.3 MB85.2k downloads249fed10c32f…Get
  • 1.0.0.011 Sept 20251.20.10.2 MB10.9k downloads36aa85360579…Get

Frequently asked

Does Unknown5473lib work on Minecraft 1.21.4?

Yes. 1.21.4 is the newest Minecraft version Unknown5473lib 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 Unknown5473lib support?

Everything the author has declared, from 1.20.1 up to 1.21.4. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Unknown5473lib 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 Unknown5473lib 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 Unknown5473lib?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is Unknown5473lib under?

LicenseRef-All-Rights-Reserved, 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 Unknown5473lib?

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 Unknown5473lib 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. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

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

Used by

1 project lists Unknown5473lib as a required dependency.

Details from Modrinth, where the author last updated it on 23 Aug 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .