PolyChess

PolyChess is a Polymer-based Fabric mod that lets you play server-side chess with friends.

14.7K Downloads

fabricquiltdecorationminigamesocial

Rent Server with this Mod

Screenshots

About this Mod

PolyChess

PolyChess is a Polymer-based Fabric mod that lets you play server-side chess with friends.

Have you wanted to play chess with your friends on the server for a long time? PolyChess is made for just that!

chessprew

New decorations for your world

chessprew1

Available Versions

PolyChess 0.1.3+1.21.11release

MC 1.21.11fabric

December 12, 2025

PolyChess 0.1.3+1.21.6release

MC 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric, quilt

August 8, 2025

PolyChess 1.21.8-0.2release

MC 1.21.8fabric

July 18, 2025

PolyChess 1.21.7-0.2release

MC 1.21.7fabric, quilt

July 4, 2025

PolyChess 1.21.6-0.2release

MC 1.21.6fabric, quilt

June 19, 2025

How to Install PolyChess 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 "PolyChess". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricquilt

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+9 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

PolyChess 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 PolyChess compatible with fabric and quilt?

PolyChess officially supports fabric, quilt for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with PolyChess – how to optimize performance?

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