What Cave Horror Project 1 works with.
| Platform | Java Edition |
|---|---|
| Loaders | Forge |
| Minecraft versions | 1.20.1 |
| Environment | Client, Server |
Cave Horror Project 1 turns vanilla Minecraft survival into a scripted horror campaign. Built for Forge 1.20.1, the pack runs on both client and server and pairs an original questline with a lineup of custom horror mobs and bosses, so every cave, ruin, and nightfall carries a scripted threat instead of a random one.
What's included
- Over 240 story quests across six chapters guiding progression from spawn toward the End.
- Custom bosses and threats including Apollyon, Herobrine, The Man From The Fog, the Cave Dweller, and the Spider Moth.
- Horror-themed decoration blocks, quest items, and atmosphere mods layered on top of standard Forge survival mechanics.
- Backpack and quality-of-life mods rebalanced around the pack's horror-themed crafting economy.
How to install Cave Horror Project 1
- 1.Open the Modrinth App or another app that supports importing .mrpack files.
- 2.Search for Cave Horror Project 1, or import the .mrpack file downloaded from the Modrinth project page.
- 3.Let the app install Forge 1.20.1 and the full bundled mod list automatically.
- 4.Start the instance and allow extra time on first load, since the world adds custom horror mobs and quest data.
Client and server requirements
Cave Horror Project 1 needs the same modpack installed on both client and server. Modrinth lists client support and server support as required, so solo play and a dedicated multiplayer server use an identical mod list rather than a trimmed-down server build. The download is a substantial 189.8 MB Forge pack, so stable bandwidth and free disk space matter more than they would for a lightweight pack.
Watch it in action
Cave Horror Project 1 gameplay showcase
Questions about Cave Horror Project 1.
5 questions
How do I install Cave Horror Project 1?
Use the Modrinth App or another app that can import .mrpack files, search for Cave Horror Project 1, and let it install Forge 1.20.1 with the full mod list automatically. You can also import the .mrpack file downloaded directly from the Modrinth project page.
Which Minecraft version does Cave Horror Project 1 support?
Cave Horror Project 1 targets Minecraft Java Edition 1.20.1 on Forge. It has not been ported to newer Minecraft versions, so select 1.20.1 as the game version before installing the pack.
Does Cave Horror Project 1 work on multiplayer servers?
Yes. Modrinth lists both client and server support as required, meaning a dedicated server needs the same mod list installed, not just the client. Anyone connecting to that server also needs the identical pack installed locally.
Is Cave Horror Project 1 safe to use?
Cave Horror Project 1 is distributed through Modrinth under an all-rights-reserved license, so download it only from the Modrinth project page rather than third-party mirrors. Back up any existing world before installing, since the pack adds custom mobs, bosses, and quest data.
What does Cave Horror Project 1 add to the game?
It layers a 240-plus quest storyline across six chapters onto vanilla survival, along with custom horror bosses like Apollyon and Herobrine, atmospheric threats such as the Cave Dweller and The Man From The Fog, and themed decoration blocks throughout the world.






