undergroundbiomes
undergroundbiomes adds 23 stone variants to Minecraft, each placed in its own underground biome, with bricks, smooth stone and pressure plates for each type.
What it does
Each of the 23 stone types generates in a separate underground biome, so a world exposes different stone blocks as the player digs deeper. The stones are treated like vanilla stone, and their crafting recipes follow the vanilla stone recipes, so stone bricks, smooth stone and pressure plates can be made from each type.
The mod is open source under the GNU General Public License v3.0 only. Its name matches an earlier Minecraft mod of the same name, though this version is a separate project by nachtsilberhase. Files are published for Fabric, Forge and NeoForge for 1.21.1 and 26.2, and the source code, issue tracker and wiki are public.
Client and server: both the server and every player need the mod, because the stone blocks and biomes must match on both sides. The latest Fabric, Forge and NeoForge files are dated 2026-07-20. The mod was first published on 2026-07-07 and updated on 2026-07-20.
Key features
23 stone types
Twenty-three original stone types are added, each generated in its own underground biome.
Vanilla-style stone variants
Every stone type gets stone bricks, smooth stone and pressure plates, as vanilla stone does.
Matching crafting recipes
Crafting recipes follow the recipes used for vanilla stones, so the new blocks are made the same way.
Underground biome placement
Each stone type sits in a different underground biome, which spreads the new blocks through the world.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Underground exploration
Players who dig through caves and mines find different stone types in each biome, which changes the look of a mining trip.
Building with new stone
Builders get extra stone bricks, smooth stone and pressure plates for each type, which adds variety to structures.
Who it’s for: Players and builders who want more stone types in their survival or creative worlds, and server owners who want the same underground blocks for every player.
How it compares
EmbellishCraft is open source under the MIT License and runs on Forge and NeoForge for 1.13.2 – 1.21.1, with client and server both needing it. Nova Stones is a NeoForge mod for 1.21.1 under the MIT License, which is not open source, and also needs client and server. Extra Rocks is a Fabric mod for 26.1.2 under All rights reserved, not open source, and runs on client and server.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| undergroundbiomes | Fabric, Forge and NeoForge | 1.21.1 – 26.2 | Client and server | 2026-07-20 |
| EmbellishCraft | Forge and NeoForge | 1.13.2 – 1.21.1 | Client and server | 2025-06-06 |
| Nova Stones | NeoForge | 1.21.1 | Client and server | 2026-05-21 |
| Extra Rocks | Fabric | 26.1.2 | Client and server | 2026-06-30 |
Questions
Which loaders does undergroundbiomes support?
Does the server need undergroundbiomes?
Can the new stone be crafted like vanilla stone?
In the catalog
undergroundbiomes is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 13,894 mods support Minecraft 26.2.
More from nachtsilberhase
Similar mods
What the author says
It is no coincidence that is mod is named like the former version that existed for Minecraft 1.12 and before. This mod adds the 23 original stone types to Minecraft. Each stone type is located in a different biome. All stones can be treated like the vanilla stone.
Official listing
- Modrinth page
- modrinth.com/mod/undergroundbiomes
- Owner
- nachtsilberhase
- Published
- 2026-07-07
- Updated on Modrinth
- 2026-07-20
- Facts verified
- 2026-10-15