Horror OneBlock Build for Minecraft 1.20.1, 1.21.1
OneBlock survival with horror mobs, dwellers, guns, shaders, and Create automation.
Horror OneBlock
Horror OneBlock is a Forge modpack built around a pre-made OneBlock world and a dark horror atmosphere.
Start on a single block and survive while terrifying creatures, dwellers, stalker entities, disturbing sounds, and psychological horror events make progression much more dangerous than normal OneBlock survival.
This modpack combines classic OneBlock gameplay with horror, combat, automation, shaders, and quality-of-life improvements.

Features
- Pre-made OneBlock world included
- Multiple horror mobs, dwellers, and stalker entities
- Atmospheric sound and shader support
- Guns and combat-focused survival
- Create automation
- Storage and quality-of-life improvements
- Performance optimizations
- Designed for a creepy and challenging survival experience

Included content
This pack focuses on horror-themed gameplay and includes:
- Horror mobs and dwellers
- Psychological horror messages / events
- OneBlock progression
- Create-based automation
- Weapon and survival systems
- Shader support
- Voice chat and extra immersion features
How to play
After installing the modpack:
- Open Singleplayer
- Start the included world
- Survive and progress through the OneBlock experience
Important notes
- This modpack includes a pre-made world
- The included world may show an experimental settings warning
- This is normal and required for the map / world setup to function correctly
Credits
I do not own the mods included in this modpack. All credit goes to the original mod creators and the creator(s) of the included OneBlock world.
This modpack is a curated combination of mods, configs, and a pre-made world for a complete horror-themed OneBlock experience.
How to install Horror OneBlock
With Millida Launcher
Install Millida Launcher
The launcher is free: download it at millida.net/launcher and sign in with any nickname.
Click “Install” on this page
The launcher opens and installs the modpack for Minecraft 1.19.2–1.21.1 on Forge or NeoForge automatically.
Launch the game
A profile with it appears in the launcher: click “Play”.
Manually
Download the modpack archive
In the version list above, pick the file horror-oneblock-1.1.1-neoforge-1.21.1.mrpack (217 KB).
Import it into a launcher
A launcher that supports modpacks (Millida Launcher, Prism) takes the archive via “Add modpack”, then “From file”. No need to unpack it yourself.
Allocate memory
Modpacks need more memory than the plain game: set 4–6 GB in the profile settings.
On a server
Use the “To server” button
On Millida Hosting, the button at the top of the page uploads the file to your server and restarts it for you.
Invite friends: they install the same modpack
To join the server, every player needs the same modpack version.
Minecraft 1.21.1 runs on Java 21: with a different Java version the game may close right after launch.
Versions
With dependencies
| Minecraft | Loader | File | Date | Actions |
|---|---|---|---|---|
| 1.21.1 | NeoForge | 1.21.1217 KB 19 | ||
| 1.20.1 | Forge | 1.20.149.7 MB | ||
| 1.19.2 | Forge | 1.19.232.6 MB | ||
| 1.19.2 | Forge | 1.19.239.3 MB | — |
What it needs to run
- Dependencyalready included
- Dependencyalready included
- Dependencyalready included
- Geckolibalready included
- Simple Voice Chatalready included
- Cloth Config APIalready included
- Dependencyalready included
- Complementary Shaders - Reimaginedalready included
- Dependencyalready included
- Createalready included
- Dependencyalready included
- CreativeCorealready included
- Dependencyalready included
- Dependencyalready included
- [TaCZ] Timeless and Classics Zeroalready included
- Dependencyalready included
- Clumpsalready included
- Dependencyalready included
- Dependencyalready included
- Collectivealready included
- AmbientSoundsalready included
- Searchablesalready included
- Exposurealready included
- Dependencyalready included
- Just Zoomalready included
- Essential Modalready included
- Architectury APIalready included
- ModernFixalready included
- Jade 🔍already included
- Kotlin for Forgealready included
- From The Fogalready included
- Dependencyalready included
- Dependencyalready included
- Dependencyalready included
- 3D Skin Layersalready included
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