



This data pack changes sulfur caves generation so that they generate as islands in the middle of the ocean, like mushroom islands.
Regular sulfur caves will not generate anymore, but the caves underneath sulfur islands will have generation somewhat similar to vanilla sulfur caves.
Sulfur islands will replace mushroom islands in warmer oceans, while mushroom islands continue to generate in cooler oceans. If an island generates across a temperature border a strip of the stony shores biome will generate to make a less awkward transition.
To make them match the mushroom islands, sulfur islands won't spawn any hostile mobs, and the biome's feature of naturally spawning cave spiders is moved to dripstone caves. Stony shores have also been changed to pervent hostile mob spawning.
Its possible this datapack will not function with other datapacks or mods that change the biomes of the overworld, due to it changing the biome generation through the overworld.json file in data/minecraft/dimension.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 26.2-pre-1, 26.2-pre-2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
- Downloads as Sulfur Isles.zip
- Download size: 125 KB
- Download link checked 24 Aug 2026 — working
These come from our own check of the pack file, not from the source page.