Mycelium Mire Mod | Mushroom Fields Overhaul

Mycelium Mire Mod rewrites the mushroom fields biome into a hostile, rewarding adventure. The add-on populates the once-quiet mycelium fields with custom mushrooms, roaming traders, minibosses, and full boss encounters, plus a gelatin-based toolset you can only craft from what the biome drops.

A reworked mushroom fields biome

The mycelium biome is now dense with custom fungi and structures. Puffshrooms, cordyceps, and brute bonnets all spawn here, and the biome switches mood with the day cycle. Mushroom traders wander during daylight, while the monster roster comes out at night to hunt you.

Mushroom traders and cores

Two trader types live in the biome. The normal mushroom trader barters items and mushrooms in exchange for the fungi you collect. The fat mushroom trader stays put and hands you four distinct mushroom cores. Combine those cores in a bowl to craft something useful, which makes the stationary trader worth seeking out even though he never moves.

Mobs and minibosses

The biome adds several new hostile creatures:

Puffshrooms are the basic enemy. They chase you from up to 100 blocks away and sometimes spit poison when hit, so kiting them at range is risky.

Cordyceps are low-health minibosses with real damage output. They close the gap fast with a charge attack and cycle between melee and root-trail moves, so burst damage beats a long fight.

Brute Bonnets are immobile tank minibosses. They trade movement for a huge health pool and hit back with a fungus-ball projectile, a ranged spray, and a slam that triggers a small explosion around them.

The Slime Queen and the Gigahand

The Slime Queen is built from slime mold and moves faster than a spider. She cycles four attacks, including a blindness-and-buff phase, a poison strike, glowing spikes, and a heal that also erupts flaming spikes. Defeating her drops gelatin you can use to craft a full toolset.

The Gigahand is a colossal hand that surfaces when you summon it with a lure. It has three attacks of its own, and it continuously spawns puffshroom pods that burst into 0 to 3 Puffshrooms each, capped at 100 pods at a time. Expect mushroom meteors and a poison slash while you manage the adds.

How to install Mycelium Mire

1. Install Forge for Minecraft, then launch the game once with the Forge profile so the mods folder is created.
2. Download the GeckoLib library mod. Mycelium Mire will not load without it.
3. Drop both the GeckoLib JAR and the Mycelium Mire JAR into your mods folder.
4. Launch Forge, enter a world with a mushroom fields biome nearby, and explore.

If you want a broader refresher on JAR placement and profile setup, see the general mod install guide. For more biome-focused picks, try our Decent Biomes and Better Villages write-ups.

Mycelium Mire FAQ

Do I need any other mods for it to work?

Yes. GeckoLib is a hard requirement. The mod will crash on startup if GeckoLib is missing, so install it first and place both JARs in the same mods folder.

Is Mycelium Mire still being updated?

The last release is from May 2023. Check the project page for current status before building a long-term world around it, since the add-on has not seen a new file since then.

Can I play it on a server with friends?

It works on dedicated servers as long as every player and the server itself run the same mod plus GeckoLib. Install it server-side the same way you do client-side.

Is it safe to add to an existing survival world?

It is generally safe because it adds content rather than replacing core blocks, but back up your world first. New biome spawns only appear in ungenerated chunks, so travel to fresh terrain to see the reworked mushroom fields.