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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 release 1.21.11UtilityManagement
Latest version
1.12
Platforms
Paper, Forge
Licence
LicenseRef-All-Rights-Reserved
Downloads
510
Updated
2 mo ago
Available on
Modrinth
Space NodeOur hosting

Host MythicalAC servers

One click and MythicalAC is installed on a Paper or Purpur server 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.

Most recently published release

1.12release15 Aug 2026

MythicalAC-1.0.0.jar · 63 KB · for 1.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +7 more · Paper

Download this release
0aa1d4d1fabd…
Older versions12
  • 1.123 Jul 20261.20.160 KB17 downloads15794b363782…Get
  • 1.1123 Jul 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +7 more62 KB23 downloads93f4578dcc66…Get
  • 1.0.921 Jul 20261.20.160 KB7 downloads51a6ddcdcb28…Get
  • 1.0.814 Jul 20261.20.159 KB1 download0985489abaea…Get
  • 1.0.714 Jul 20261.20.159 KB1 downloadd329f5a168f7…Get
  • 1.0.614 Jul 20261.20.159 KB2 downloadsbf59721073d3…Get
  • 1.0.513 Jul 20261.20.148 KBb840a6d80cce…Get
  • 1.0.413 Jul 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +7 more40 KBce1e529ed4e0…Get
  • 1.0.313 Jul 20261.20.148 KB1 download1f1c1488c006…Get
  • 1.0.213 Jul 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +7 more40 KB1 download5161133a6a4a…Get
  • 1.0.112 Jul 20261.20.146 KBb8639f066d57…Get
  • 1.0.012 Jul 20261.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.7 +7 more37 KB1 download1f174a52a694…Get

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 platform or loader does MythicalAC support?

Paper, 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 MythicalAC?

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 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?

Choose the release variant for your server platform. Paper, Spigot, Purpur and Bukkit files go in the server's plugins folder; Fabric, Forge, NeoForge and Quilt files go in the mods folder. Restart after installing and check that the Minecraft version matches your server.

Where do I download MythicalAC 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 15 Aug 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? .