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Mutant Beasts Mod for Minecraft 1.15.2

The mutants are back

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Updated
Updated 18.10.2026
  • 1.15.2
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About the Mutant Beasts mod

Mutant Beasts brings back the popular Mutant Creatures mod to modern Minecraft, after four years without an update.

Note that I am not the original creator; all credits for the content made goes to shcott21/thehippomaster21

Mutant Beasts — screenshot 3

I have contacted the author privately to ask for permission to create this port, but the author has yet to respond, meaning I don't have official permission.

The original mod required another mod to work, which was called AnimationAPI, that is also the work of the Mutant Creatures creator, but is not needed for this mod.

Below are links to the CurseForge page of the original as well as the Minecraft Fourm page. The fourm page contains most of the information you will need to know about this mod. It is also where I got the logo for this project and for the in-game logo on the mods screen, and the credit for those goes to their respective creators

Requires Minecraft Forge

How to create Chemical X

https://thumbs.gfycat.com/FragrantSingleArcherfish-mobile.mp4

Creating a Spider-Pig

https://thumbs.gfycat.com/BraveAromaticAdmiralbutterfly-mobile.mp4

Taming a Spider-Pig

https://thumbs.gfycat.com/ElderlyBadJabiru-mobile.mp4

CurseForge:

Mutant Creatures Mod

Minecraft Forum:

Mutant Creatures - Spider Pig, Spider Pig [v1.4.9]

Mutant Beasts — screenshot 4

How to install Mutant Beasts

With Millida Launcher

  1. Install Millida Launcher

    The launcher is free: download it at millida.net/launcher and sign in with any nickname.

  2. Click “Install” on this page

    The launcher opens and installs the mod for Minecraft 1.15.2 automatically.

  3. Launch the game

    A profile with it appears in the launcher: click “Play”.

Manually

  1. Download the file for your version

    In the version list above, pick the file MutantBeasts-1.15.2-1.0.9.jar (1.2 MB) for your game version.

  2. Put it in the mods folder

    The folder is inside .minecraft (Windows: %appdata%\.minecraft\mods). If it does not exist, create it.

  3. Launch the loader profile

    Open “Mods” in the main menu: Mutant Beasts should be in the list.

Minecraft 1.15.2 runs on Java 8: with a different Java version the game may close right after launch.

Versions

With dependencies

MinecraftLoaderFileDateActions
1.15.2—MutantBeasts-1.15.2-1.0.9.jar1.2 MB 2

FAQ

Which Minecraft versions does Mutant Beasts work on?

Only Minecraft 1.15.2: there are no files for other versions.

Which Java does Mutant Beasts need?

Minecraft 1.15.2 runs on Java 8. If the game closes right after launch, the usual cause is the wrong Java version in the profile settings.

Where can I download Mutant Beasts safely?

On this page: the file MutantBeasts-1.15.2-1.0.9.jar (1.2 MB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: cb04a35031895b7072b177562378a724f353de20.

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