Citadel

Citadel

A Lightweight Library

by
15.3M Downloads
forgeneoforgelibrary
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About this Mod

Citadel-Logo
"My analysis of historical data suggests an 97.34% probability that you are aware of my birth on your planet, and my rebirth into beauty on Citadel Station." -System Shock 2

Citadel is a Library mod required for advanced animations and entity properties in 1.14 and beyond. Citadel, being a Library, does not add many features by itself, but rather provides a frame work for other mods when it comes to animating entities, loading .tbl Tabula and .obj Waveront models, and for keeping track of entity properties. Citadel's predecessor, LLibrary, will no longer be updated from 1.12.2, and from now on all of my mods will use Citadel. Citadel's code base is largely derived from LLibrary, and the code is used with permission from Gegy1000, the maintainer of LLibrary and its author in recent versions.

In versions 1.6.3 and above, there is also a config option for changing the cap on how many mobs spawn on chunk generation. This is useful when used with the many mob mods that require Citadel, as without changing this they can make it quite difficult to find vanilla mobs.

Developers who want to use Citadel can read the guide on how to add it to their development environment.

Available Versions

Citadel 2.7.1release
MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11neoforge
July 18, 2026
Citadel 2.7.0release
MC 1.21.1neoforge
January 17, 2026
Citadel 2.6.3release
MC 1.20.1forge, neoforge
January 17, 2026
Citadel 2.6.2release
MC 1.20.1forge, neoforge
June 27, 2025
Citadel 2.6.1release
MC 1.20.1forge, neoforge
December 18, 2024

How to Install Citadel on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.21.11).

3

Install Mod

Open the mod browser in the dashboard and search for "Citadel". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

forgeneoforge

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+18 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Citadel server crashes on startup – what to do?

Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is Citadel compatible with forge and neoforge?

Citadel officially supports forge, neoforge for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Citadel – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Citadel consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Citadel with just one click on your server.

Recommended RAM
4 GBfrom €5.2/mo
Minimum 3 GB | per 8 players
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NVMe SSD Storage
DDoS Protection included

Details

License
GNU Lesser General Public License v3.0 only
Server-side
Required

Supported Versions

1.21.111.21.101.21.91.21.81.21.71.21.61.21.51.21.41.21.31.21.2+11 more