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CitadelMinecraft mod for 1.21.11

A Lightweight Library

client and servernewest supported release 1.21.11Library
Latest version
2.7.1
Minecraft
1.14.4 to 1.21.11
Java
Java 21+
Loaders
NeoForge, Forge
Licence
LGPL-3.0-only
Downloads
14.2M
Updated
3 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Citadel servers

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

  • 1.21.11
  • 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 Citadel declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.11NeoForge, Forge21+declared9 Dec 2025
1.21.10NeoForge, Forge21+declared7 Oct 2025
1.21.9Forge, NeoForge21+declared30 Sept 2025
1.21.8NeoForge, Forge21+declared17 Jul 2025
1.21.7Forge, NeoForge21+declared30 Jun 2025
1.21.6NeoForge, Forge21+declared17 Jun 2025
1.21.5NeoForge, Forge21+declared25 Mar 2025
1.21.4Forge, NeoForge21+declared3 Dec 2024
1.21.3NeoForge, Forge21+declared23 Oct 2024
1.21.2NeoForge, Forge21+declared22 Oct 2024
1.21.1NeoForge, Forge21+declared8 Aug 2024
1.21NeoForge, Forge21+declared13 Jun 2024
1.20.1NeoForge, Forge17+declared12 Jun 2023
1.20Forge, NeoForge17+declared2 Jun 2023
1.19.4NeoForge, Forge17+declared14 Mar 2023
1.19NeoForge, Forge17+declared7 Jun 2022
1.18.2NeoForge, Forge17+declared28 Feb 2022
1.17.1NeoForge, Forge16+declared6 Jul 2021
1.16.5NeoForge, Forge8+declared14 Jan 2021
1.15.2NeoForge, Forge8+declared17 Jan 2020
1.14.4NeoForge, Forge8+declared19 Jul 2019

Download

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

Most recently published release

2.7.1release18 Jul 2026

citadel-2.7.1-1.21.1.jar · 2.9 MB · for 1.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +7 more · NeoForge

Download this release
e0d1988b9274…
Older versions23

Frequently asked

Does Citadel work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version Citadel 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 Citadel support?

Everything the author has declared, from 1.14.4 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Citadel 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 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 Citadel?

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 Citadel 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?

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 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.

Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)Collective🎓 Collective is a shared library with common code for all of Serilum's mods.

Used by

1 project lists Citadel as a required dependency.

Jurassic RebornJurassic Reborn (JR) is a mod based on prehistoric creatures from different games, movies, and fandoms relating to the Jurassic Park / World Universe. JR has added 112 different creatures such as dinosaurs, marine reptiles, prehistoric fish, animals!

Details from Modrinth, where the author last updated it on 18 Jul 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? .