Caves Everywhere
Caves Everywhere reshapes the Overworld underground, with a world stretched to 512 blocks high, deep oceans and Ancient Cities set along the shores of cliffs beneath the surface.
What it does
The mod is a world-generation overhaul that changes how caves and the depths below the surface are built. The underground is extended so that a world reaches a colossal height, and the lowest layer holds a sprawling dark ocean that a player can reach only after crossing the deep stone below. Ancient Cities from the Deep Dark biome are adjusted so they generate along the coastlines of that underground sea, where they stand against massive cliffs.
Caves Everywhere is meant for players who want a harder survival run in a much larger underground space. It requires Fabric API on Fabric, and the file for each loader is listed separately. The mod runs on client and server, so the server and every player need it, and the latest files target 1.21.1 on Fabric, Forge and NeoForge. All rights reserved applies, so the mod is not open source.
Key features
Taller world height
The world generation is stretched to 512 blocks high, far beyond the vanilla height limit.
Subterranean oceans
Deep ocean basins are placed at the bottom of the world, reachable only through the underground.
Ancient Cities on coastlines
Deep Dark Ancient Cities are adjusted so they generate along the shores of the underground sea, beside cliffs.
Underground survival
The enlarged caves and depths are built to make survival harder and the darkness more pressing.
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
How it compares
The Ancient Towns is a mod that requires the server but leaves the client optional, released under All rights reserved and not open source, with files for 1.20.1 – 26.2 on Fabric, Forge, NeoForge and Quilt. KS Biomes also requires the server with the client optional, under the MIT License and not open source, with files for 1.21.11 – 26.2 on the same four loaders. Ocean World Dimension is the one that shares this mod's client and server environment, but it is open source under the MIT License and supports Forge and NeoForge only, for 1.18.2 – 1.21.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Caves Everywhere | Fabric, Forge and NeoForge | 1.21.1 | Client and server | 2026-10-11 |
| The Ancient Towns | Fabric, Forge, NeoForge and Quilt | 1.20.1 – 26.2 | Server required, client optional | 2026-06-25 |
| KS Biomes | Fabric, Forge, NeoForge and Quilt | 1.21.11 – 26.2 | Server required, client optional | 2026-06-16 |
| Ocean World Dimension | Forge and NeoForge | 1.18.2 – 1.21.1 | Client and server | 2025-11-28 |
Questions
Does Caves Everywhere need Fabric API?
Does the server need Caves Everywhere?
Which loaders have the latest file for 1.21.1?
In the catalog
Caves Everywhere is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
Caves Everywhere is a massive world-generation overhaul that completely transforms the way you experience the Overworld. If you ever felt that Minecraft's caves weren't deep, dark, or terrifying enough, this is the mod for you. We have shattered the vanilla limits to bring you a truly colossal underground survival…
Official listing
- Modrinth page
- modrinth.com/mod/caves-everywhere
- Owner
- misterplayer37
- Published
- 2026-08-05
- Updated on Modrinth
- 2026-10-11
- Facts verified
- 2026-10-15