CurseForge · Minecraft mod
Hollow Days
A single-player existential horror mod: four quiet days in a world that slowly stops being a world.
Quick answer
Which Hollow Days release should I use?
Hollow Days 1.1.0 targets 1.21.1 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Hollow Days required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Hollow Days 1.1.0 need?
Hollow Days 1.1.0. Change the file and its required mods may change too.
Install Fabric API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Hollow Days without breaking your instance.
Built for Hollow Days 1.1.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Hollow Days 1.1.0. It targets 1.21.1 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside Hollow Days 1.1.0. It opens that exact file at the source.
About this project
What does Hollow Days add?
Hollow Days
Four days.
Hollow Days is a single-player horror mod about liminal spaces and quiet, existential dread. There are no monsters to fight, no jump scares and no blood. Just you, an ordinary world, and the growing feeling that something about it is wrong.
Every day the world is a little less sure of what it is supposed to be. Nothing will chase you. Play the way you always do: build, explore, sleep. And pay attention to what you see and hear.
It is a short scripted experience: four in-game days in one world, and then it ends.
How to play
- Minecraft Java Edition 1.21.1, Fabric Loader 0.16.14 or newer and Fabric API.
- Create a new Survival world and play alone, with the sound on. Headphones and a dark room help.
- Don't look things up. It works best if you don't know what is coming.
Please read before installing
- The mod changes your world for good, and your builds may not survive it. Never install it into a world you care about.
- While the mod is installed, music is off and the title screen panorama stands still. At some point the mod lowers your brightness; your own setting comes back when you leave the world.
- Made for single-player. Compatibility with mods that change the sky, rendering or sound has not been tested.
Not an official Minecraft product. Not approved by or associated with Mojang or Microsoft.
Project description from CurseForge.
Pick your setup
Hollow Days by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Hollow Days versions and loaders
Hollow Days 1.1.0
hollowdays-1.1.0-1.21.1.jar
15 Nov 2026
Hollow Days
hollowdays-1.0.0+1.21.1.jar
3 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.