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Aftershock Mod for Minecraft 1.20.1, 1.21.1

Based on the Tremor series, this mod adds the Precambrian monsters of the deep into your Minecraft experience!

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Updated 18.10.2026
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About the Aftershock mod

Introducing a new menacing predator lurking beneath the earth's surface - the Graboids!

This mod brings the American Graboid lifecycle to life, allowing you to experience the thrill of facing off against these formidable creatures in the dirt and sand. Get ready to be fully immersed in a world where survival means staying one step ahead of these deadly predators.

Aftershock — screenshot 3

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Aftershock — screenshot 4

How to install Aftershock

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 1.20.1–1.21.1 on Fabric, Forge or NeoForge automatically.

  3. Launch the game

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

Manually

  1. Install Fabric, Forge or NeoForge

    The loader must match the game version of the mod file, for example Minecraft 1.21.1. After installing it, a separate profile appears in your launcher.

  2. Download the file for your version

    In the version list above, pick the file aftershock-fabric-1.21.1-1.0.1.jar (611 KB) for your game version and loader.

  3. Put it in the mods folder

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

  4. Launch the loader profile

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

Minecraft 1.21.1 runs on Java 21: with a different Java version the game may close right after launch.

Versions

With dependencies

MinecraftLoaderFileDateActions
1.21.1Fabricfabric 1.0.1611 KB
1.21.1NeoForgeneoforge 1.0.1613 KB
1.20.1Forgeaftershock-connector-1.20.1-0.0.8.jar564 KB

FAQ

Which Minecraft versions does Aftershock work on?

There are files for 1.21.1, 1.20.1. The newest is 1.21.1.

Is Aftershock for Forge or Fabric?

There are files for Fabric: 1.21.1, for Forge: 1.20.1 and for NeoForge: 1.21.1.

Does Aftershock need other mods?

The author lists no required dependencies: the Fabric, Forge or NeoForge loader is enough.

Which Java does Aftershock need?

Minecraft 1.21.1 runs on Java 21. If the game closes right after launch, the usual cause is the wrong Java version in the profile settings.

Where can I download Aftershock safely?

On this page: the file aftershock-fabric-1.21.1-1.0.1.jar (611 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: c3b5e3e31a3db1f05d9285aafb0e1e2e338ef40a.

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