CurseForge · Minecraft mod
Spore: Mycelium Protocol
Containment is stable. Until someone opens the door.
Quick answer
Which Spore: Mycelium Protocol release should I use?
Spore: Mycelium Protocol Spore-Mycelium-Protocol-1.0.3.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 3 required mods have matching files.
Where it goes
Is Spore: Mycelium Protocol required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Spore: Mycelium Protocol Spore-Mycelium-Protocol-1.0.3.jar need?
Spore-Mycelium-Protocol-1.0.3.jar. Change the file and its required mods may change too.
Install Fungal Infection: Spore, Custom Portal API [Forge], Spore Dimension first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
1 extra mod was pulled in by another dependency. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Spore: Mycelium Protocol without breaking your instance.
Built for Spore: Mycelium Protocol Spore-Mycelium-Protocol-1.0.3.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Spore-Mycelium-Protocol-1.0.3.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fungal Infection: Spore, Custom Portal API [Forge], Spore Dimension first. We found matching files for this game-version and loader setup. 1 comes through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside Spore-Mycelium-Protocol-1.0.3.jar. It opens that exact file at the source.
About this project
What does Spore: Mycelium Protocol add?
Spore: Mycelium Protocol
Contain the infection. Until something escapes.
Spore: Mycelium Protocol is a standalone compatibility/add-on. Instead of removing Spore's infection mechanics, Containment Breach creates a clear boundary between the infected dimension and the rest of your world.
Containment Protocol
Outside "The Mycelium" , Containment Breach prevents:
Natural Spore mob spawning, Spore mobs originating through normal spawn systems, Spawner-originated Spore mob creation, Spore's special infected fishing spawn, Spore world-generation features, Spore Dimension world-generation features, Spore and Spore Dimension structures from naturally generating
The result is a world where the infection begins contained inside The Mycelium instead of appearing randomly throughout the Overworld or other dimensions.
But Containment Can Fail
This mod does not simply delete every infected entity that exists outside the Spore Dimension.
If an infected creature genuinely escapes, is transported through a portal, or infection spreads through Spore's conversion mechanics, it can survive and continue spreading.
That means a breach is a real gameplay event rather than something that happens because the mod randomly spawned infected creatures near your base.
The containment protocol prevents the outbreak from beginning outside the Spore Dimension.
It does not protect you once something gets out.
TBMG Compatibility
The Biomass Must Grow (TBMG) remains functional.
This Is an Add-On
Spore: Mycelium Protocol does not redistribute or bundle the mods it modifies.
Required Mods
- Minecraft 1.20.1, Forge 47.4.10+, Spore 2.2.0j+, Spore Dimension, Custom Portal API, The Biomass Must Grow (TBMG)
Instead of asking:
"Why did Spore randomly generate here?"
you get to ask:
"How did it get out?"
Supported Environment
Minecraft: 1.20.1
Mod Loader: Forge
Tested Forge: 47.4.10
Java: 17
Containment is stable.
Until someone opens the door.
Project description from CurseForge.
Pick your setup
Spore: Mycelium Protocol by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Spore: Mycelium Protocol versions and loaders
Spore-Mycelium-Protocol-1.0.3.jar
3 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.