Undeepslated

Undeepslated

Simple datapack/mod that turns deepslate underground into regular stone!

by
1.7K Downloads
datapackfabricforgeneoforgequiltadventureworldgen
Rent Server with this Mod

Screenshots

Undeepslated Screenshot 1
Undeepslated Screenshot 2
Undeepslated Screenshot 3
Undeepslated Screenshot 4
Undeepslated Screenshot 5

About this Mod

Undeepslated | By Wilozyx

Undeepslated is a world-generation-focused datapack & mod which aims to remove deepslate blocks and deepslate ores from the underground of worlds, instead, Y levels -64 to 0 are generated with regular stone, aswell as regular stone ores!

Undeepslated is very simplistic and only alters the overworld's noise settings & configured placed ore features, datapacks/mods that change/add/remove things like biomes, structures, features, etc should work!

Made with ❤️

NOTE:

All my work is 100% public property, feel free to use this in your own modpacks/datapacks, or edit/modify/tweak it as much as you like!

SOCIALS:

( Feel free to message me on discord for any issues, suggestions, etc! <3 )

Cave without the datapack
Cave with the datapack

Available Versions

Undeepslated - v1.0.0 for 1.21.11release
MC 1.21.11fabric, forge, neoforge, quilt
March 28, 2026
Undeepslated - v1.0.0 for 1.21.11release
MC 1.21.11datapack
March 28, 2026
Undeepslated - v1.0.0 for 1.21.9-1.21.10release
MC 1.21.9, 1.21.10fabric, forge, neoforge, quilt
March 28, 2026
Undeepslated - v1.0.0 for 1.21.9-1.21.10release
MC 1.21.9, 1.21.10datapack
March 28, 2026
Undeepslated - v1.0.0 for 1.21.xrelease
MC 1.21, 1.21.1fabric, forge, quilt
June 14, 2024

How to Install Undeepslated on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.11).

3

Install Mod

Open the mod browser in the dashboard and search for "Undeepslated". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

1.21.11, 1.21.10, 1.21.9 (+17 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Undeepslated server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is Undeepslated compatible with datapack and fabric and forge and neoforge and quilt?

Undeepslated officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.11, 1.21.10, 1.21.9. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Undeepslated – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Undeepslated consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Undeepslated with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
Creative Commons Zero v1.0 Universal
Server-side
Required

Supported Versions

1.21.111.21.101.21.91.21.11.211.20.61.20.51.20.41.20.31.20.2+10 more