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MythicalACMinecraft plugin for 1.21.11

Server-side anticheat for Forge 1.20.1 & Paper 1.21.x. Detects movement, combat, build & inventory hacks (Fly, Speed, Reach, KillAura, Scaffold, AutoTotem, Nuker) with configurable checks and rubber-band setbacks.

server onlynewest supported 1.21.11UtilityManagement
Latest version
1.1
Loaders
Paper, Forge
Licence
LicenseRef-All-Rights-Reserved
Downloads
106
Updated
9 d ago
Available on
Modrinth
Space NodePartner

Host MythicalAC servers

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

  • 1.21.11
  • Paper
  • Forge
  • One click plugin install
  • Paper and Purpur ready
  • Automatic updates
  • 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 MythicalAC declares support for, newest first, with the Java runtime that version needs.

Other plugins
MinecraftThroughJavaEvidenceReleased
1.21.11Paper, Forge21+declared9 Dec 2025
1.21.10Forge, Paper21+declared7 Oct 2025
1.21.9Forge, Paper21+declared30 Sept 2025
1.21.8Paper, Forge21+declared17 Jul 2025
1.21.7Paper, Forge21+declared30 Jun 2025
1.21.6Forge, Paper21+declared17 Jun 2025
1.21.5Paper, Forge21+declared25 Mar 2025
1.21.4Paper, Forge21+declared3 Dec 2024
1.21.3Paper, Forge21+declared23 Oct 2024
1.21.2Forge, Paper21+declared22 Oct 2024
1.21.1Paper, Forge21+declared8 Aug 2024
1.21Paper, Forge21+declared13 Jun 2024
1.20.1Paper, Forge17+declared12 Jun 2023

Download

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

1.1release23 Jul 2026

mythicalac-forge-1.20.1-1.0.0.jar · 0.1 MB · for 1.20.1

Download latest
15794b363782
Older versions11
  • 1.1123 Jul 20261.21, 1.21.1, 1.21.2, 1.21.3, 1.21.40.1 MB23 downloads93f4578dcc66Get
  • 1.0.921 Jul 20261.20.10.1 MB7 downloads51a6ddcdcb28Get
  • 1.0.814 Jul 20261.20.10.1 MB1 downloads0985489abaeaGet
  • 1.0.714 Jul 20261.20.10.1 MB1 downloadsd329f5a168f7Get
  • 1.0.614 Jul 20261.20.10.1 MB2 downloadsbf59721073d3Get
  • 1.0.513 Jul 20261.20.10.0 MBb840a6d80cceGet
  • 1.0.413 Jul 20261.21, 1.21.1, 1.21.2, 1.21.3, 1.21.40.0 MBce1e529ed4e0Get
  • 1.0.313 Jul 20261.20.10.0 MB1 downloads1f1c1488c006Get
  • 1.0.213 Jul 20261.21, 1.21.1, 1.21.2, 1.21.3, 1.21.40.0 MB1 downloads5161133a6a4aGet
  • 1.0.112 Jul 20261.20.10.0 MBb8639f066d57Get
  • 1.0.012 Jul 20261.21, 1.21.1, 1.21.2, 1.21.3, 1.21.40.0 MB1 downloads1f174a52a694Get

Frequently asked

Does MythicalAC work on Minecraft 1.21.11?

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

Everything the author has declared, from 1.20.1 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 MythicalAC on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which server software does MythicalAC need?

Paper, Forge. A build for one server platform will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for MythicalAC?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the plugin itself.

What licence is MythicalAC 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 MythicalAC?

Download the file from the author's own release, drop it into your server's plugins folder, and restart the server. It generates its configuration on first start. Check the Minecraft version matches the one your server runs.

Where do I download MythicalAC safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Last checked 6 d 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? .