Lootr Polymer Patch

Lootr Polymer Patch

A 100% serverside fabric patch for Lootr, adding per-player loot chests.

by
2.2K Downloads
fabricgame-mechanics
Rent Server with this Mod

Screenshots

A naturally generated Lootr chest in a ruined portal.

About this Mod

Lootr Polymer Patch

Lootr is a mod that makes all containers inside structures spawn with per-player loot so that every player can loot structures without having a large perimeter around spawn devoid of loot.

This mod patches Lootr to work completely server-side. That is, vanilla clients can join and use the mod. This mod must be installed alongside Lootr and its dependencies.

Lootr containers render as their vanilla counterparts, with a small lodestone icon.

A naturally generated chest in a ruined portal.

A naturally generated chest in a ruined portal.

This mod also removes Lootr's advancements, making it an ideal-drop in for SMPs since they're just irritating for players and add bloat to what should be a simple server-side mod.

This mod probably works without too many changes on lower versions but you'll need to downgrade the included dependencies and rebuild it.

Available Versions

Lootr Polymer Patch 1.1release
MC 1.21.11fabric
January 9, 2026
Lootr Polymer Patch 1.1release
MC 1.21.9, 1.21.10fabric
October 14, 2025
Lootr Polymer Patch 1.1release
MC 1.21.6, 1.21.7, 1.21.8fabric
August 31, 2025
Lootr Polymer Patch 1.0release
MC 1.21.6, 1.21.7, 1.21.8fabric
August 26, 2025

How to Install Lootr Polymer Patch on Your Server

1

Order Server

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

2

Set fabric Loader

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

3

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+3 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Lootr Polymer Patch 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 Lootr Polymer Patch compatible with fabric?

Lootr Polymer Patch officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Lootr Polymer Patch – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Lootr Polymer Patch 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 Lootr Polymer Patch with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

1.21.111.21.101.21.91.21.81.21.71.21.6