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Biomorphosis

by ArcAnc

Biomorphosis gives players a way to cultivate organic ecosystems, creatures and structures that grow from mutations, and to direct their evolution.

NeoForgeClient and serverCustom license1.21.1 – 1.21.4

What it does

Players harvest biomass and use it to develop a colony, prepare it for dangers and run experiments. Hive Villages are generated in the world, though rare, and an Insect Village sits inside a small unique biome of its own. Nearly a dozen new units each have their own natural habitat, and the mod introduces a new location type alongside them.

Biomorphosis brings new blocks, items, resources and machines, and a fluid-transfer network that feeds and reinforces a player's base. Interactive ways to communicate with and influence the Swarm are included, as are a smart-home-style automation hideout and character modifications that replace standard armor with unique enhancements. Players first craft a Lure Campfire from Flesh Blocks, ignite it with Flint Steel, and face the Queen in battle.

Biomorphosis is client and server, so the server and every player need it. Files are published for NeoForge on 1.21.1 and 1.21.4. It requires PulseLib and TerraBlender, and Jade and Just Enough Items (JEI) are optional. The mod is released under a custom license and is not open source, though its source code and issue tracker are public.

Key features

  1. Mutation-driven ecosystems

    Organic creatures, structures and living systems grow from mutations that the player can guide.

  2. Biomass colony

    Biomass is harvested and spent to develop and defend a colony against the dangers of the world.

  3. Unique creature habitats

    Nearly a dozen new units each live in their own natural habitat, and some entities appear nowhere else.

  4. Fluid-transfer base network

    A fluid-transfer system carries resources between machinery to power and strengthen the base.

  5. Swarm influence

    Players can communicate with and influence the Swarm through interactive means.

Compatibility

Latest build for each game version and loader.

1.21.426.1
1.21.11.21.1-26.4
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 2

TerraBlenderA library mod for adding biomes in a simple and compatible manner!
Required
PulseLibThis library allow you to render and animate anything in game. Totally anything. Entities, blocks even items can be animated
Required

Optional 2

Jade 🔍Shows information about what you are looking at. (Hwyla/Waila fork for Minecraft 1.16+)
Optional
Just Enough Items (JEI)View Items and Recipes
Optional

Questions

Which dependencies does Biomorphosis need?

PulseLib and TerraBlender are required. Jade and Just Enough Items (JEI) are optional additions that work alongside the mod.

Does Biomorphosis have to be installed on the server?

Yes. It runs as client and server, so the server and every player need the mod installed.

Which game versions does Biomorphosis support?

Files exist for NeoForge on 1.21.1 and 1.21.4, and the latest NeoForge file is 1.21.1-26.4 for 1.21.1, published 2026-08-04.

In the catalog

Biomorphosis is one of 11,058 Mobs mods on ModsFinder, and one of 4,974 Mobs mods for NeoForge. 17,979 mods support Minecraft 1.21.4.

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What the author says

“Biomorphosis” is a modification about a collective mind and its invasion into the classic world. The Swarm grows and evolves, becoming more dangerous with each passing day. You may try to restrain it - or perhaps even destroy it. But sometimes the only way to defeat an approaching nightmare... is to lead it. Why is…
ArcAnc, on the Modrinth page

Official listing

Owner
ArcAnc
Published
2025-12-05
Updated on Modrinth
2026-08-04
Facts verified
2026-10-15

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