Schworlium
Schworlium replaces vanilla cave generation with hollow cave networks shaped by 3D Worley noise, and runs on the server alone.
What it does
A custom carver generates the cave systems in a world. Rather than the standard vanilla caves, it produces tunnel layouts built from a volumetric noise pattern. The mod is a port of SuperFluke's Worley's Caves, but the author chose to depart from a strict one-to-one port, so the caves carve smoother and taller than in the original.
The first version used per-block math noise with a sampling threshold, and that approach produced jittery walls with visible stepping inside tunnels. The current carver uses a smoothing method borrowed from Worlium, which gives cleaner surfaces and a more coherent cave shape. The carver has also been adapted to the extended world height introduced after Minecraft 1.18.
Because only the server needs it, players join a server running Schworlium without installing anything. Fabric API is required on Fabric, and the mod is released under the GNU General Public License v3.0 only. Files target 1.21.1, 1.21.11, 26.2 and 26.3, with the latest build 0.4.1 for 1.21.1 published on 2026-09-22.
Key features
Worley noise caves
Caves are carved from hollow networks generated with 3D Worley noise, giving a different layout from vanilla.
Smoother cave surfaces
A smoothing approach removes the jittery block-level noise, so tunnel walls have fewer visible steps.
Taller cave generation
The carver works with the extended world height added after 1.18, so caves can reach the taller range.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Survival servers
Server owners who want different underground layouts can run Schworlium so new chunks generate its caves.
Who it’s for: Server owners and world creators who want the underground of a new world to look different from vanilla, without requiring players to install anything.
How it compares
Subsurface is server required with client optional, open source under the Apache License 2.0, and covers 1.20 – 26.2 on Fabric, Forge, NeoForge and Quilt. No Caves is server required with client optional, open source under the MIT License, and covers 1.18 – 26.1 on the same four loaders. Schworlium is server-side only on Fabric and NeoForge for 1.21.1 – 26.3, so the two alternatives reach further back in version range and on more loaders.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Schworlium | Fabric and NeoForge | 1.21.1 – 26.3 | Server-side only | 2026-09-22 |
| Subsurface | Fabric, Forge, NeoForge and Quilt | 1.20 – 26.2 | Server required, client optional | 2026-06-23 |
| No Caves | Fabric, Forge, NeoForge and Quilt | 1.18 – 26.1 | Server required, client optional | 2026-03-25 |
Questions
Does Schworlium need Fabric API?
Does every player need Schworlium installed?
Which game versions have files?
In the catalog
Schworlium is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 8,071 mods support Minecraft 26.3.
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What the author says
Schworlium is a Worley-noise cave generation mod for Minecraft 26.2.x and 1.21.11 targeting both Fabric and NeoForge. Right now, It's essentially an opinionated port of SuperFluke's Worley's Caves, but it will eventually diverge into a more fleshed-out spelunking mod. As expected, the carver replaces vanilla's caves…
Official listing
- Modrinth page
- modrinth.com/mod/schworlium
- Owner
- swankydenizen
- Published
- 2026-06-30
- Updated on Modrinth
- 2026-09-22
- Facts verified
- 2026-10-15