Luna's UpdateMize o6!
by SushiMCPE
Luna's UpdateMize o6! adds the Sulfur Caves biome and Cinnabar blocks to NeoForge 1.21.11 worlds.
What it does
Sulfur Caves are generated deep underground, and inside them the mod places small lakes of Potent Sulfur. Sulfur Cinnabar blocks appear in the caves as natural stone. Potent Sulfur releases Noxous Gas that can cause a nausea effect when a player steps into it, so the lakes are worth approaching with care. The mod also supplies a Sulfur Cube mob that absorbs blocks when hit and can be kicked like a football, and different blocks produce different effects when handled.
The mod is a NeoForge add-on for Minecraft 1.21.11 and is published only for that version. It runs on the client and the server, so both need it installed. It is all rights reserved and not open source, and the author's custom code for the Sulfur Cube and the Sulfur Lake generator is part of the release. Thanks are given to crimson phoneme for contributions to the project. Survival Mode works with the new content.
Key features
Sulfur Caves biome
Deep underground caves form a biome containing Sulfur Cinnabar blocks and small Potent Sulfur lakes.
Cinnabar block set
Cinnabar Slabs, Bricks, Walls and Chiseled Bricks, plus Polished Cinnabar Bricks, extend the palette for building.
Noxous Gas hazard
Potent Sulfur gives off Noxous Gas, and water in the lakes causes a nausea effect on contact.
Sulfur Cube mob
A new mob that absorbs blocks when struck and can be kicked, its behavior following the Minecraft Live teaser.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Exploring deep caves
Players searching underground find the Sulfur Caves, where the new blocks and Potent Sulfur lakes are placed.
Building with new stone
Crafting Table and Stonecutter recipes turn Cinnabar blocks into slabs, bricks, walls and chiseled variants.
Who it’s for: Players on NeoForge 1.21.11 who want the Sulfur Caves and Cinnabar blocks early, and server owners who run that version and can install the mod on both sides.
How it compares
SulphurUpdate is a NeoForge mod for 1.21.8 that is also client and server, all rights reserved and not open source. Sulfur Caves Backport covers Fabric, Forge and NeoForge across 1.20.1 – 26.1.2 under All rights reserved. Chaos Cubed Expanded targets Fabric and NeoForge for 26.2 – 26.3 and is also not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Luna's UpdateMize o6! | NeoForge | 1.21.11 | Client and server | 2026-03-28 |
| SulphurUpdate | NeoForge | 1.21.8 | Client and server | 2026-03-23 |
| Sulfur Caves Backport | Fabric, Forge and NeoForge | 1.20.1 – 26.1.2 | Client and server | 2026-09-17 |
| Chaos Cubed Expanded | Fabric and NeoForge | 26.2 – 26.3 | Client and server | 2026-09-21 |
Questions
Which loader does Luna's UpdateMize o6! use?
Does the server need Luna's UpdateMize o6! installed?
Is the mod still being updated?
In the catalog
Luna's UpdateMize o6! is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 19,862 mods support Minecraft 1.21.11.
More from SushiMCPE
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What the author says
Minecraft Live teased some awesome things! Deep underground, you will find the Sulfur Caves! In the caves, you will find the new Sulfur and Cinnabar blocks! You can build with them, or craft them into slabs, bricks, walls, or chiseled bricks and expand your pallette! You will also find lakes in the caves, which…
Official listing
- Modrinth page
- modrinth.com/mod/lunas-updatemize-o6
- Owner
- SushiMCPE
- Published
- 2026-03-03
- Updated on Modrinth
- 2026-03-28
- Facts verified
- 2026-10-15