Universal Jar

Name: Universal Jar
Price: 8 EUR
Author: L3astt

A vanilla-enhancing modpack able to be used on any vanilla servers or worlds.

by L3astt

1.2K Downloads

0 Followers

fabricMC 1.20.1lightweightmultiplayeroptimization

Rent Universal Jar Server

Screenshots

About this Modpack

Title

A modpack able to be used across different servers and worlds.

Increases the framerate of the game while improving the experience and quality of minecraft.

(other versions for the game are coming soon)

UPDATE

I kinda forgot about this project, but over the past 2 years I have grown way better at making modpacks.

This project will most likely be rebranded.
New versions of Universal Jar will be coming soon for:

1.20.1 Fabric & Forge
1.21.1 Fabric & Neoforge
1.21.11 Fabric & Neoforge
26.1.2 Fabric & Neoforge

Available Versions

Universal Jar (experimental release)beta

MC 1.20.1fabric1.1K downloads

May 13, 2024

How to Set Up a Universal Jar Server

Order Server

Choose at least 4 GB RAM (6 GB recommended for Universal Jar). Based on player count: per 8 players.

Install Modpack in Dashboard

Open the modpack browser in the dashboard, search for "Universal Jar" and click "Install". The fabric loader and Minecraft 1.20.1 are configured automatically.

Start Server & Play

Start the server – all mods are loaded automatically. Share the server IP with friends and play together!

Frequently Asked Questions

Universal Jar server crashes or won't start – what to do?

Most common causes: insufficient RAM or wrong fabric loader. Check latest.log for "OutOfMemoryError" → increase RAM to at least 6 GB. For "Mixin" or "ClassNotFoundException" errors: modpack version and loader don't match. With Mado Hosting, loader and Minecraft version are auto-configured on modpack install – preventing most startup issues.

How much RAM does a Universal Jar server really need?

Minimum 4 GB, recommended 6 GB for stable performance. per 8 players. Important: Minecraft modpacks need more RAM than vanilla – plan extra per additional player. With Mado Hosting, you can scale RAM up live at any time without data loss (from €8/month).

Can I add custom mods to Universal Jar without conflicts?

Yes, but check compatibility: only use mods for the same loader (fabric) and same Minecraft version (1.20.1). Common issues: ID conflicts with recipe mods and incompatible coremod versions. The Mado dashboard mod browser only shows compatible mods and warns about known conflicts.

Universal Jar server lagging – performance tips

1) Increase RAM to 6 GB+. 2) Reduce server view-distance to 8 (server.properties). 3) Pre-generate chunks with the "Chunky" plugin. 4) Use /spark profiler to check which mods consume the most tick time. With Mado Hosting, all servers run on NVMe SSDs with dedicated CPU cores – eliminating hardware as a bottleneck.