Menu

modpack

Atzlk MC: Official ModpackMinecraft modpack for 1.21.1

Official Modrinth Modpack for Atzlk MC Weather SMP

client and servernewest supported release 1.21.1AdventureOptimizationMultiplayer
Latest version
3.9
Minecraft
1.21.1
Loader
NeoForge
Licence
LicenseRef-All-Rights-Reserved
Downloads
6.0k
Updated
26 d ago
Available on
Modrinth
Space NodeOur hosting

Host Atzlk MC: Official Modpack servers

One click and Atzlk MC: Official Modpack is installed with the right loader, on hardware built for it.

  • 1.21.1
  • NeoForge
  • One click modpack install
  • Dependencies handled
  • Tuned startup flags
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Atzlk MC: Official Modpack declares support for, newest first, with the Java runtime that version needs.

Other modpacks
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge21+declared8 Aug 2024

Download

From Atzlk MC: Official Modpack’s own host. Nothing is re-hosted here.

Most recently published release

3.9release13 Oct 2026

Atzlk MC Official Modpack 3.9.mrpack · 4 KB · for 1.21.1 · NeoForge

Download this release
5dd08ca8c087…
Older versions13
  • 3.824 Sept 20261.21.14 KB73e1661268cd…Get
  • 3.722 Aug 20261.21.14 KBced3e5834a39…Get
  • 3.616 Aug 20261.21.14 KBeef558583f08…Get
  • 3.513 Aug 20261.21.14 KB3d377bc1a473…Get
  • 3.410 Aug 20261.21.14 KBdb396aa16422…Get
  • 3.39 Aug 20261.21.14 KB29f8ce8fe3b8…Get
  • 3.28 Aug 20261.21.162.7 MB3a5b60e93e7e…Get
  • 3.18 Jul 20261.21.17 KB548 downloads733b2eafeec9…Get
  • 3.012 Jun 20261.21.144 KB1.2k downloads4d16250001df…Get
  • 1.521 Apr 20261.21.13 KB553 downloads484e833943ae…Get
  • 1.421 Mar 20261.21.13 KB650 downloadse0de0d6b5c7c…Get
  • 1.39 Mar 20261.21.128 KB566 downloads835111a69a58…Get
  • 1.26 Mar 20261.21.12 KB45 downloads175db7855829…Get

Frequently asked

Does Atzlk MC: Official Modpack work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Atzlk MC: Official Modpack 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 Atzlk MC: Official Modpack 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 Atzlk MC: Official Modpack 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 Atzlk MC: Official Modpack?

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 Atzlk MC: Official Modpack 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 Atzlk MC: Official Modpack?

Use a launcher that imports packs, such as Prism Launcher, the Modrinth App or the CurseForge app, and open the pack file with it. The launcher installs the right loader and mods for you; installing a pack's mods by hand is the error-prone way.

Where do I download Atzlk MC: Official Modpack 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.

Details from Modrinth, where the author last updated it on 13 Oct 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? .