The structure moss mod adds a small handful of redstone-powered blocks to spread and help with building.
Fill in caves and the space under facades with Expanding Moss
Fill in water/lava with sponge/lava moss
Create outlines and bridges with line moss
And get rid of them all with moss eater
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.21.2, 1.21.3
- 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 — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as structuremoss-1.0.0.jar — drop this file into the mods folder
- Download size: 41 KB
- Download link checked 23 Aug 2026 — working
These come from our own check of the pack file, not from the source page.