SimonUHC

mod for playing uhc with your friends via LAN. (Essential and e4mc also works)

59 Downloads

fabricminigametechnologyutility

Rent Server with this Mod

Screenshots

About this Mod

SimonUHC

⚠️DISCLAIMER⚠️

mod is still WIP.

what is this for

this mod is mainly made for modpack SimonUHC Client.

what does it do?

It basically allows you to play uhc game in LAN world with friends. It also works very well with Essential and e4mc.

how to play

what you need:

Minecraft (obviously)
this mod
friends

step by step guide:

Create a new world
use /uhc countdown <seconds> to set preparation time
use /uhc borders <blocks> to set border size (for example: /uhc borders 5000 will confine world within -2500 to 2500 x and z cordinates)
Open it to LAN
wait for your friends to join you
(optional) use /spectators join to spectate and /spectators leave to stop spectating
use /uhc init to start the game.

FAQ

Q: I don't have friends

A: Bro so do I 🥀🥀.

I have an issue!

Report it here

Available Versions

SimonUHC 1.0.0alpha

MC 1.21.11fabric

May 17, 2026

How to Install SimonUHC on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

SimonUHC 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 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is SimonUHC compatible with fabric?

SimonUHC officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with SimonUHC – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if SimonUHC 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.