RingWorld 1.4 is out for Minecraft 1.21.1

You can now play RingWorld on Minecraft 1.21.1, with releases for Fabric and NeoForge.

This backport brings the core features of the 26.x release to 1.21.1: the Ring Atlas, adaptive terrain generation, background saves, weather fading, and smoother transitions between nearby blocks and distant terrain. It also includes improvements to mesh uploads and Atlas cache handling for this version.

All of this functionality is backported from 26.x, so the experience on 1.21.1 may not match 26.x exactly.

Requires Java 21. Fabric also requires Fabric API. For multiplayer, install the same RingWorld version on the server and all clients.

RingWorld is still a work in progress. If something breaks or looks wrong, please report it on GitHub.