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Cobblemon: Mega ShowdownMinecraft mod for 1.21.1

Adds Mega Evolution, Z-Moves, Teralization, Dyna/Gigantamax, Ultra Burst & Fusions to Cobblemon!

client and servernewest supported release 1.21.1AdventureMobsEquipmentGame Mechanics
Latest version
1.3.3+1.8.4+1.21.1-release
Minecraft
1.21.1
Loaders
Fabric, NeoForge
Licence
LicenseRef-MEGA-SHOWDOWN-LICENSE-v2.1
Downloads
13.2M
Updated
3 d ago
Available on
Modrinth
Space NodeOur hosting

Host Cobblemon: Mega Showdown servers

One click and Cobblemon: Mega Showdown is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Fabric
  • 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 Cobblemon: Mega Showdown declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric, NeoForge21+declared8 Aug 2024

Download

From Cobblemon: Mega Showdown’s own host. Nothing is re-hosted here.

Browse 37 indexed releases

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • NeoForge

    1.3.3+1.8.4+1.21.1-release · 27 Oct 2026 · mega_showdown-neoforge-1.3.3+1.8.4+1.21.1-release.jar

    Get NeoForge
  • Fabric

    1.3.0+1.8.2+1.21.1-release · 12 Oct 2026 · mega_showdown-fabric-1.3.0+1.8.2+1.21.1-release.jar

    Get Fabric
  • Fabric, NeoForge

    1.9.3+1.7.3+1.21.1 · 27 Jul 2026

    Multiple loaders are listed; verify the file before downloading.

    Choose file on publisher ↗

Most recently published release

1.3.3+1.8.4+1.21.1-releaserelease27 Oct 2026

mega_showdown-neoforge-1.3.3+1.8.4+1.21.1-release.jar · 19.4 MB · for 1.21.1 · NeoForge

Download this release
880275d4a42e…
Older versions24
  • 1.3.2+1.8.2+1.21.1-release23 Oct 20261.21.119.4 MB5771f87924c9…Get
  • 1.3.1+1.8.2+1.21.1-release14 Oct 20261.21.119.4 MBf21b299d7d1b…Get
  • 1.3.0+1.8.2+1.21.1-hotfix12 Oct 20261.21.119.2 MBb6bf3ea5996b…Get
  • 1.3.0+1.8.2+1.21.1-release12 Oct 20261.21.119.1 MBb7efa93e5a71…Get
  • 1.2.0+1.8.1+1.21.1-release13 Sept 20261.21.119.3 MB5b8aa9452e87…Get
  • 1.1.2+1.8+1.21.1-release10 Sept 20261.21.119.2 MBb1d66bea77fe…Get
  • 1.1.1+1.8+1.21.1-release10 Sept 20261.21.119.2 MBcef2dd287699…Get
  • 1.1.0+1.8+1.21.1-release10 Sept 20261.21.119.2 MB3368cb11717b…Get
  • 1.0.2+1.8+1.21.1-release8 Sept 20261.21.119.1 MBf94171902771…Get
  • 1.0.1+1.8+1.21.1-release8 Sept 20261.21.119.0 MBa8173efee0cf…Get
  • 1.0+1.8+1.21.1-release-hotfix7 Sept 20261.21.119.2 MB55cee6905de4…Get
  • 1.0+1.8+1.21.1-release7 Sept 20261.21.119.2 MB58179170500e…Get
  • 1.0+1.8+1.21.1-beta26 Sept 20261.21.119.3 MB37a2088cdfd2…Get
  • 1.0+1.8+1.21.1-beta6 Sept 20261.21.119.5 MBca5350632e7d…Get
  • 1.9.9+1.7.3+1.21.15 Sept 20261.21.119.5 MB952285a56518…Get
  • 1.9.8+1.7.3+1.21.13 Sept 20261.21.119.5 MBc5b0db5e8da8…Get
  • 1.9.7+1.7.3+1.21.11 Sept 20261.21.119.4 MBe9bcb32c0f5c…Get
  • 1.9.6+1.7.3+1.21.130 Aug 20261.21.119.3 MB527ffde5b984…Get
  • 1.9.5+1.7.3+1.21.122 Aug 20261.21.119.2 MBf65942f209b4…Get
  • 1.9.4+1.7.3+1.21.117 Aug 20261.21.119.1 MB3aed87fce125…Get
  • 1.9.4+1.7.3+1.21.1-beta16 Aug 20261.21.118.8 MB23cdf0a01803…Get
  • 1.9.3+1.7.3+1.21.127 Jul 20261.21.118.1 MBfbe6a1ec4818…Choose file on publisher ↗
  • 1.9.2+1.7.3+1.21.1-hotfix25 Jul 20261.21.118.1 MB4a7da9913db5…Choose file on publisher ↗
  • 1.9.2+1.7.3+1.21.125 Jul 20261.21.118.1 MB007281cc452c…Choose file on publisher ↗

Dependencies

What Cobblemon: Mega Showdowndeclares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.

Frequently asked

Does Cobblemon: Mega Showdown work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Cobblemon: Mega Showdown 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 Cobblemon: Mega Showdown 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 Cobblemon: Mega Showdown support?

Fabric, 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 Cobblemon: Mega Showdown?

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 does Cobblemon: Mega Showdown need to run?

It declares Fabric API, Architectury API, oωo (owo-lib), Cobblemon and Accessories as required, so those have to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is Cobblemon: Mega Showdown under?

LicenseRef-MEGA-SHOWDOWN-LICENSE-v2.1, 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 Cobblemon: Mega Showdown?

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 Cobblemon: Mega Showdown 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.

Used by

23 projects list Cobblemon: Mega Showdown as a required dependency. The most installed ones are shown.

Details from Modrinth, where the author last updated it on 27 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? .