Supplementaries Squared

The extra content of Supplementaries that doesn't necessarily fit in the base mod!

4.4M Downloads

fabricforgeneoforgedecoration

Rent Server with this Mod

About this Mod

Supplementaries²

📖About 📖

An addon for Supplementaries mod dedicated to adding variants to some of its blocks as well as some other misc features that didnt make the cut to the main mod.

Main features are:

Colored Sacks
Wood variant Item Shelves
Golden Candle Holders
Daub stairs and walls
Metal Frames
Plaques

❤️Support Me❤️

Modding is taking a lot of my time, so if you like what I do, and you would like to support me, you can do so here. If you do, you'll receive a custom Globe and or Statue just for you! This also applies if you purchase a server from Akliz using "supplementaries" code.

Need a server? Check out Akliz, they have top brand servers just for modded minecraft. They really have a cozy community with great support and the servers wonderfully
Use code "supplementaries" to get 20% off and also support me in the process!

🦉 Our Mods🦉

Available Versions

suppsquared-1.21-1.2.18-fabricrelease

MC 1.21.1fabric

June 17, 2026

suppsquared-1.21-1.2.18-neoforgerelease

MC 1.21.1neoforge

June 17, 2026

1.20-1.1.29release

MC 1.20.1fabric

January 10, 2026

1.20-1.1.29release

MC 1.20.1forge

January 10, 2026

fabric_1.21-1.2.17release

MC 1.21, 1.21.1fabric

December 19, 2025

How to Install Supplementaries Squared 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 (1.21.1).

Install Mod

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

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

1.21.1, 1.21, 1.20.1 (+1 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Supplementaries Squared 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 (1.21.1). You can switch loaders with one click in the panel.

Is Supplementaries Squared compatible with fabric and forge and neoforge?

Supplementaries Squared officially supports fabric, forge, neoforge for Minecraft 1.21.1, 1.21, 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Supplementaries Squared – how to optimize performance?

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