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Kingdoms & SiegesMinecraft mod for 1.21.1

A mod adding kingdoms and siege warfare.

client and servernewest supported 1.21.1Technology
Latest version
1.1.0
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Fabric, Forge, NeoForge
Licence
LicenseRef-All-Rights-Reserved
Downloads
3.3k
Updated
6 d ago
Available on
Modrinth
Space NodeOur hosting

Host Kingdoms & Sieges servers

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

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

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Kingdoms & Sieges declares support for, newest first, with the Java runtime that version needs.

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

Download

From Kingdoms & Sieges’s own host. Nothing is re-hosted here.

1.1.0beta7 Jul 2026

kingdomsieges-fabric-1.21.1-1.1.0.jar · 1.4 MB · for 1.21.1

Download latest
0ca51240eb0f…
Older versions12
  • 1.0.030 Apr 20261.20.11.3 MB363 downloads5bbcaf725bc4…Get
  • 0.2.210 Apr 20261.20.11.3 MB113 downloads4375163dec43…Get
  • 0.2.12 Apr 20261.20.11.9 MB23 downloads067b67ee920e…Get
  • 0.2.017 Mar 20261.20.11.9 MB68 downloads2d47794a154e…Get
  • 0.1.723 Dec 20251.20.11.8 MB383 downloads343703c2c725…Get
  • 0.1.619 Oct 20251.20.11.8 MB216 downloadsd7b88e8b204c…Get
  • 0.1.54 Oct 20251.20.11.8 MB64 downloadse472d9ac3181…Get
  • 0.1.44 Sept 20251.20.11.8 MB162 downloadsa0bf030007e9…Get
  • 0.1.326 Aug 20251.20.11.8 MB72 downloads2e5e81ce5c58…Get
  • 0.1.223 Aug 20251.20.11.8 MB50 downloads2f853090f0bd…Get
  • 0.1.119 Aug 20251.20.11.8 MB157 downloads26bf152e03d5…Get
  • 0.1.04 Aug 20251.20.11.8 MB86 downloadsf7849eb96a3d…Get

Frequently asked

Does Kingdoms & Sieges work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Kingdoms & Sieges 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 Kingdoms & Sieges support?

Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Kingdoms & Sieges 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 Kingdoms & Sieges support?

Fabric, 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 Kingdoms & Sieges?

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 Kingdoms & Sieges 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 Kingdoms & Sieges?

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 Kingdoms & Sieges 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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Details from Modrinth, where the author last updated it on 3 Oct 2026. 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? .