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Modrinth Modrinth · Modpack

How to install "One Block Horror"

Start on a single block and progress by unlocking resources, dimensions, and challenges… now with added HORROR mods that introduce creepy creatures.

Author

Lactobacillus

Downloads

8.9K

Last Updated

Dec 5, 2025

License

CC0-1.0

Mod Loaders

Fabric

Minecraft Versions

1.21.10
adventure challenging combat lightweight magic

Quick Install ID

#one-block-horror-modpack

Install One Block Horror in GDLauncher

One Block Horror runs on Fabric. Pick whichever your existing instance uses, or create a new one. GDLauncher installs the correct loader automatically.

Install on Fabric

  1. Open GDLauncher and create a new instance (the + button on the Library page).
  2. Pick the Fabric loader and a Minecraft version that One Block Horror supports (1.21.10 are common choices).
  3. Open the new instance, go to the Addons tab, and click Add Addons.
  4. Paste the Quick Install ID #one-block-horror-modpack, find One Block Horror in the results, and hit Download. GDLauncher pulls dependencies automatically.
  5. Hit Play. That's it.

Before you install

Make sure your Minecraft version matches what One Block Horror supports. As of the latest release, 1.21.10 are supported. One Block Horror only runs on Fabric; mods built for other loaders won't work. GDLauncher checks compatibility for you and won't install something incompatible with the instance you've chosen.

Frequently Asked Questions

Is One Block Horror free?

Yes. One Block Horror is free to download and install through GDLauncher. GDLauncher itself is also free and ad-free.

What Minecraft versions does One Block Horror support?

One Block Horror supports Minecraft 1.21.10. GDLauncher will automatically pick a compatible version when you install it.

Does One Block Horror require Forge or Fabric?

One Block Horror requires Fabric. GDLauncher will install the correct loader automatically when you create an instance.

How do I install One Block Horror?

Open GDLauncher, go to your instance's Addons tab, click Add Addons, and paste the Quick Install ID #one-block-horror-modpack. GDLauncher handles dependencies and the right Minecraft version automatically.

Who made One Block Horror?

One Block Horror is made by Lactobacillus. The full project lives on Modrinth (https://modrinth.com/modpack/one-block-horror-modpack).

Need help?

Read our troubleshooting guide, check the guides section, or join the GDLauncher Discord community.

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