Mercury Madness
by foxinerd
Mercury Madness expands Cinnabar into a source of a new toxic metal, mercury, for players who want to work with it in Fabric worlds.
What it does
Cinnabar ore, the mineral mercury comes from in the real world, gains a mercury output in this mod. Breaking it can release toxic fumes that leave a glop of mercury behind, and a Silk Touch pick keeps the glop intact. Cinnabar can be made renewable through crafting, and a sulfur cave ore adds a second source. Sulfur compacted into blocks is used to make geysers that release fumes at enough concentration.
Mercury itself is handled as a liquid in buckets that bottle later, and dipping raw gold, iron or copper in a mercury bucket yields four copies of the metal. Mercury can also be placed in the world as a hazard block, similar to powder snow, that inflicts Blindness and the Hydrargyria debuff on contact. The debuff is a poison-style effect that deals knockback along with lethal damage. Mercury Bulbs glow with a strength set by the redstone signal they receive, using the strongest signal they get.
The mod requires Fabric API. It is published only for Fabric, for Minecraft 26.2 and 26.3, and the latest file is version 2.0.0 for 26.3. The server and every player need the mod installed. The code is open source under the MIT License.
Key features
Mercury from Cinnabar
Cinnabar ore releases mercury fumes and leaves a mercury glop behind when mined with a Silk Touch tool.
Sulfur Caves ore
Sulfur Caves, added in 26.2, bring a new ore and two new blocksets that feed the sulfur geysers.
Hydrargyria debuff
Mercury block contact applies Blindness and a poison-style Hydrargyria effect with knockback and lethal damage.
Mercury Bulbs
Bulbs glow according to the strongest redstone signal they receive, and they are mostly decorative.
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
Renewable Cinnabar is a server-side only mod for Fabric on 26.2, licensed under the MIT License and open source, which covers only renewability. Sulfur Expansion is server required with client optional, open source under the MIT License, and built for Fabric and NeoForge on 26.3. [W] Ore Variants runs on client and server for Fabric and NeoForge on 26.2 and is not open source, so it is licensed as All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Mercury Madness | Fabric | 26.2 – 26.3 | Client and server | 2026-09-16 |
| Renewable Cinnabar | Fabric | 26.2 | Server-side only | 2026-07-24 |
| Sulfur Expansion | Fabric and NeoForge | 26.3 | Server required, client optional | 2026-09-24 |
| [W] Ore Variants | Fabric and NeoForge | 26.2 | Client and server | 2026-06-17 |
Questions
Does Mercury Madness need Fabric API?
Do the server and players both need the mod?
Which game versions does Mercury Madness support?
In the catalog
Mercury Madness is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 8,071 mods support Minecraft 26.3.
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What the author says
In 26.2, the Sulfur Caves were added, which introduced two new blocksets. Sulfur, which can be compacted and be used to make geysers in enough concentrations. And Cinnabar, which... is mostly decorative. Which is a shame really. Irl, Cinnabar is the ore that mercury comes from. Mercury Madness expands upon Cinnabar…
Official listing
- Modrinth page
- modrinth.com/mod/mercury-madness
- Owner
- foxinerd
- Published
- 2026-08-13
- Updated on Modrinth
- 2026-09-16
- Facts verified
- 2026-10-15