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Cave Only World Map for Minecraft 26.30

A map that changes overworld worldgen to a cave world type, with biomes and structures, etc.

On a server
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Updated
Updated 18.10.2026
  • 1.20.70 — 26.30

Cave World

This is a survival map that turns the Overworld into a cave world type and overhaules the terrain generation.

  • All Overworld Biomes are there, and Structures (like villages, ancient cities, stronghold, etc.)
  • Passive Mobs now can spawn in low light
  • Cave Biomes are there too including their features
  • Night Vision apply during the day, and removed at night
  • You can beat the map, and it have all that you will need (Just like a normal world)

Notes:

  • The world size is limited (only 1350x1350)
  • Currently some of new biomes are not there, and they will be added in the next update soon

How To Add:

  • Like any world, it will download as a ".mcworld" file, You need to just click it and it will import
  • Note: If you are on android, you will need a file manager that support importing files, i recommend using FX File Explorer if you found/have a working one, you can continue using it

Screenshots:

Forest
Cave Only World — screenshot 3
Cave Only World — screenshot 4
Cave Only World — screenshot 5
Cave Only World — screenshot 6
Cave Only World — screenshot 7
Cave Only World — screenshot 8
Cave Only World — screenshot 9
Cave Only World — screenshot 10
Cave Only World — screenshot 11
Cave Only World — screenshot 12
Cave Only World — screenshot 13

Ready for an adventure ?

How to install Cave Only World

With Millida Launcher

  1. Install Millida Launcher

    The launcher is free: download it at millida.net/launcher and sign in with any nickname.

  2. Click “Install” on this page

    The launcher opens and installs the map for Minecraft 1.20.70–26.30 automatically.

  3. Launch the game

    A profile with it appears in the launcher: click “Play”.

Manually

  1. Download the map archive

    Pick the file Cave Only World.mcworld (229 MB).

  2. Unpack it into the saves folder

    The world folder (with level.dat inside) must sit directly in .minecraft/saves.

  3. Open the world

    “Singleplayer”: the map will be in your world list.

On a server

  1. Replace the world folder

    Stop the server and put the map folder in place of world (or set its name in level-name).

  2. Use the “To server” button

    On Millida Hosting, the button at the top of the page uploads the file to your server and restarts it for you.

Versions

With dependencies

MinecraftLoaderFileDateActions
1.20.70—Cave World229 MB

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