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data pack

Cobblemon: Missingno!Minecraft data pack for 1.21.1

A fakemon that appears where you shouldn't be and can also learn any move via TM/HM!

server onlynewest supported release 1.21.1Mobs
Latest version
1.2
Licence
LicenseRef-All-Rights-Reserved
Downloads
2.7k
Updated
3 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Cobblemon: Missingno! servers

Deploy a server with Cobblemon: Missingno! already added to the world, on hardware built for it.

  • 1.21.1
  • Data pack
  • One click install
  • Version matched
  • Automatic backups
  • 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: Missingno! declares support for, newest first, with the Java runtime that version needs.

Other data packs
MinecraftThroughJavaEvidenceReleased
1.21.1Data pack21+declared8 Aug 2024
1.21Data pack21+declared13 Jun 2024
1.21-rc1Data pack21+declared10 Jun 2024
1.21-pre4Data pack21+declared7 Jun 2024
1.21-pre3Data pack21+declared5 Jun 2024
1.21-pre2Data pack21+declared31 May 2024
1.21-pre1Data pack21+declared29 May 2024
24w21bData pack21+declared22 May 2024
24w21aData pack21+declared22 May 2024
24w20aData pack21+declared15 May 2024
24w19bData pack21+declared10 May 2024
24w19aData pack21+declared10 May 2024
24w18aData pack21+declared3 May 2024
1.20.6Data pack21+declared29 Apr 2024
1.20.5Data pack21+declared23 Apr 2024
1.20.5-rc3Data pack21+declared22 Apr 2024
1.20.5-rc2Data pack21+declared19 Apr 2024
1.20.5-rc1Data pack21+declared18 Apr 2024
1.20.5-pre4Data pack21+declared17 Apr 2024
1.20.5-pre3Data pack21+declared16 Apr 2024
1.20.5-pre2Data pack21+declared15 Apr 2024
1.20.5-pre1Data pack21+declared10 Apr 2024
24w14aData pack21+declared3 Apr 2024
24w13aData pack17+declared27 Mar 2024
24w12aData pack17+declared20 Mar 2024
1.19.2Data pack17+declared5 Aug 2022

Download

From Cobblemon: Missingno!’s own host. Nothing is re-hosted here.

Most recently published release

1.2release6 Aug 2026

missingno 1.2.zip · 43 KB · for 1.21.1, 1.21, 1.21-rc1, 1.21-pre4, 1.21-pre3 +20 more

Download this release
89bb78cdbbc5…
Older versions2
  • 1.131 Aug 20231.19.242 KB2.4k downloads38b3c113382b…Get
  • 1.029 Aug 20231.19.229 KB61 downloads399f54cb6b4d…Get

Dependencies

What Cobblemon: Missingno!declares 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: Missingno! work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Cobblemon: Missingno! 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 Cobblemon: Missingno! support?

Everything the author has declared, from 1.19.2 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 Cobblemon: Missingno! on the client or the server?

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

What does Cobblemon: Missingno! need to run?

It declares Cobblemon as required, so that has to be installed alongside it or it will not load. Each one is linked in the dependencies section above.

What licence is Cobblemon: Missingno! 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 Cobblemon: Missingno!?

Data packs install per world: put the downloaded file in that world's datapacks folder and run /reload, or add it when creating the world. No loader is involved. On a server, the world folder lives next to the server jar.

Where do I download Cobblemon: Missingno! 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 6 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? .