RingWorld

RingWorld turns the Minecraft Overworld into a finite cylindrical band that genuinely loops around itself. Walk around the circumference and return to the same blocks without a duplicate lap or corrective teleport. Nearby terrain curves away from the player while a terrain atlas continues the visible ring beyond normal chunk distance.

What it does

• The two ends of the circumference are real neighbours. Players, mobs, vehicles, redstone, fluids, projectiles, and block interactions can cross the join.
• The Overworld has a configurable circumference, finite width, and breakable cobble-and-moss rim walls. Nether and End remain ordinary Minecraft.
• Nearby terrain is made from real Minecraft chunks. A lightweight curved surface continues the view through the sky without forcing a huge render distance.
• New-world presets cover Small 2,048×128, Medium 16,384×256, and Large 32,768×512 rings. Dimensions are fixed after the first Overworld load.

The ring fills in over time

You can start playing straight away. The distant ring is prepared in layers:

1. Minecraft generates normal playable chunks around you.
2. RingWorld draws a fogged, biome-flavoured stand-in to bridge the horizons and rim walls.
3. The server samples missing surface chunks into the Ring Atlas and streams the results. New sections softly replace the stand-in instead of popping.
4. At 100%, the fog and placeholder disappear and the full curved terrain texture and height mesh take over.

Ring Atlas Generating: X% appears at the top left while this is happening and disappears when it is complete. Open RingWorld Map from the pause menu to see the live rate and ETA, or to start, pause, and resume generation when you have permission. Progress is saved across restarts; you do not need to walk a lap.

Atlas generation creates real chunks and uses CPU, disk, and time. Small rings finish quickly. Medium and Large rings can take tens of minutes or longer, depending on the machine, seed, server load, and other mods. The world remains playable while it runs, but the distant ring is deliberately foggier and less detailed until completion. The Atlas is visual only: real chunks still own collision, entities, lighting, and block interaction.

Requirements and installation

Install the matching Fabric or NeoForge artifact in Minecraft Java 26.1.2 with Java 25. Fabric requires Fabric Loader 0.19.3 or newer and Fabric API 0.155.2+26.1.2; NeoForge requires NeoForge 26.1.2.87 or newer. RingWorld is required on the dedicated server and on every connecting client; all must use the same loader and RingWorld version. Add the jar to an existing matching loader instance like any other mod. Create a new RingWorld world from the Create World screen, or configure a dedicated server before its first Overworld load. Saved RingWorld dimensions are immutable.

Compatibility

RingWorld is an engine-level mod. Back up worlds before changing versions. Mods that replace renderers or shaders, gravity, chunk or world-generation internals, entity tracking, distance rules, or networking may conflict. Do not assume Sodium, Iris, large world-generation suites, or another loader are compatible unless that exact combination is explicitly tested.

Fabric and NeoForge files are separate loader-specific releases. Do not put both files in one instance, and do not assume cross-loader multiplayer works.

Licence and source

RingWorld is open-source software under the Mozilla Public License 2.0. The exact corresponding source revision for this release is this immutable commit. Minecraft is a trademark of Microsoft; RingWorld is not affiliated with Mojang or Microsoft.