How do I install UHC ?

Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. Download the .jar. Put it in the .minecraft/mods folder and launch that loader profile. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does UHC work with?

The listing gives Minecraft 1.21.4, 1.20.1, 1.20. This is the version stated by the author or source site, not something we verified ourselves.

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UHC

Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.

by Hugman_76 · on CurseForge

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Mod loader Fabric2 builds
Mod loader Quilt2 builds

Minecraft version

Minecraft 1.21.4Newest
Minecraft 1.20–1.20.1

Minecraft 1.21.4Newest
Minecraft 1.20–1.20.1

⬇ Download for 1.21.4 · Fabric ⬇ Download for 1.20–1.20.1 · Fabric ⬇ Download for 1.21.4 · Quilt ⬇ Download for 1.20–1.20.1 · Quilt

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

🍏 UHC

UHC (abbreviation for Ultra HardCore) is a popular Minecraft survival minigame that can be played alone or with a team. This mod also includes UHCRun, a variant of UHC that tweaks the game in many ways to make it 2x faster.

UHC is one of the minigames made for the Nucleoid Project, an effort to build an open source ecosystem for server-side Minecraft minigames. You may even be interested in playing some of them over on our testing Minecraft server at nucleoid.xyz! You can also find us on our Discord if you have any troubles or queries, or would like to get involved.

Installation

UHC can be installed on a client or a server. As this is a multiplayer minigame though, it is recommended to install it on a server.

⚠ UHC needs the following mods to be installed:

Plasmid: GitHub / Modrinth
Fabric API: GitHub / CurseForge / Modrinth

Usage

To start a game of UHC, use /game open and browse the list of available game modes.

Modifications

To configure UHC, or to contribute to the project, visit the official documentation.

Credits

Hugman - Development

🌐 Translations

Language	Translators
English (base)	Hugman
French	Hugman

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.4, 1.20.1, 1.20
How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.

Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.

File checked by MCModsHub

Ships as uhc-3.0.0.jar — drop this file into the mods folder
Download size: 147 KB
Download link checked 17 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

Explore more

All Mods for Java All Minecraft Java mods Java mods for 1.21 Java mods for 1.20