Ultra Hardcore Gamemode

Ultra Hardcore Gamemode

Adds an easy-to-use 'Ultra Hardcore' gamemode button. For the tryharders.

by
500 Downloads
fabricgame-mechanicsutilityworldgen
Rent Server with this Mod

Screenshots

Minecraft Game Mode selector.

About this Mod

Ultra Hardcore Gamemode (UHC)

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Ever wished the game had a 'Ultra Hardcore' gamemode button ?

Well now it does.

What the new UI looks like:
Minecraft Game Mode selector.

FAQ

Can I remove the mod after the world is generated?

Yes you can, adding/removing the mod has absolutely no effect on existing worlds.
The mod works by automatically setting the naturalRegeneration gamerule to false. No need to feedle with settings. It's just a QoL mod.

The button doesn't translate to my locale

Currently only a few languages are supported. If you want to add your language to the mix, you can either ping me to make it available to everyone, or just make a resource pack with a selectWorld.gameMode.ultra_hardcore language key.

Available Versions

Ultra Hardcore Gamemode 1.0.0release
MC 1.20, 1.20.1fabric
September 20, 2025
Ultra Hardcore Gamemode 1.0.0release
MC 1.20.2, 1.20.3, 1.20.4fabric
September 20, 2025
Ultra Hardcore Gamemode 1.0.0release
MC 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5fabric
September 20, 2025
Ultra Hardcore Gamemode 1.0.0release
MC 1.21.6, 1.21.7, 1.21.8fabric
September 20, 2025

How to Install Ultra Hardcore Gamemode on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.8).

3

Install Mod

Open the mod browser in the dashboard and search for "Ultra Hardcore Gamemode". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.8, 1.21.7, 1.21.6 (+13 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Ultra Hardcore Gamemode server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.8). You can switch loaders with one click in the panel.

Is Ultra Hardcore Gamemode compatible with fabric?

Ultra Hardcore Gamemode officially supports fabric for Minecraft 1.21.8, 1.21.7, 1.21.6. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Ultra Hardcore Gamemode – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Ultra Hardcore Gamemode consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Ultra Hardcore Gamemode with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

1.21.81.21.71.21.61.21.51.21.41.21.31.21.21.21.11.211.20.6+6 more