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Citadel (Unofficial Port)Minecraft mod for 1.21.1

A Lightweight Library

client and servernewest supported 1.21.1Library
Latest version
2.7.6
Minecraft
1.21.1
Java
Java 21+
Loader
NeoForge
Licence
LGPL-3.0-only
Downloads
300.4k
Updated
5 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Citadel (Unofficial Port) servers

One click and Citadel (Unofficial Port) is installed with the right loader, on hardware built for it.

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

Minecraft versions

Every version Citadel (Unofficial Port) declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From Citadel (Unofficial Port)’s own host. Nothing is re-hosted here.

2.7.6release25 Apr 2026

citadel-1.21.1-2.7.6.jar · 2.9 MB · for 1.21.1

Download latest
81fd425d8910…
Older versions6
  • 2.7.526 Jan 20261.21.12.9 MB91.5k downloadscf34b72536c1…Get
  • 2.7.424 Jan 20261.21.12.9 MB1.7k downloads2ad55c12c320…Get
  • 2.7.319 Jan 20261.21.12.9 MB4.1k downloads91ef9688e031…Get
  • 2.7.214 Jan 20261.21.12.9 MB2.7k downloads1ec84726a2a7…Get
  • 2.7.19 Jan 20261.21.12.9 MB3.1k downloads5fb7c1c6e43c…Get
  • 2.7.029 Dec 20251.21.12.9 MB679 downloadse9c9b0d06411…Get

Frequently asked

Does Citadel (Unofficial Port) work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Citadel (Unofficial Port) declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Do I need to install Citadel (Unofficial Port) 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 Citadel (Unofficial Port) support?

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 Citadel (Unofficial Port)?

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 Citadel (Unofficial Port) under?

LGPL-3.0-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 Citadel (Unofficial Port)?

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 Citadel (Unofficial Port) 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.

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Last checked 2 mo ago against Modrinth. 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? .