Fabric Mods for Minecraft 1.21
Browse 370 free Fabric mods for Minecraft 1.21 — popular picks include The Twilight Forest, BetterNether, Geophilic – Vanilla Biome Overhauls.
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The Twilight Forest
A realm basked in mystery and eerie twilight, you will overpower terrifying creatures and secure the adventure of a lifetime; in the Twilight Forest.
BetterNether
Improvements for the Nether (plants, biomes, structures, worldgen)
Geophilic – Vanilla Biome Overhauls
A subtle-ish overhaul of vanilla Overworld biomes! Reworked!
Incendium
New biomes and structures with the vanilla blocks! (1.18+)
Explorations
adds more vanilla style structures to the game
Hearths
A handful of additions to vanilla Nether biomes
NetherEx
NetherEx is a nether content mod.
The Bumblezone (Fabric)
An unBEElievable dimension full of bees to BEEfriend!
Jaden's Nether Expansion
Nether Expansion is a Vanilla Friendly mod that aims to improve & add new content to every aspect of The Nether
Amplified Nether
256-tall nether with 3D biomes, mountains and more!
[FABRIC/QUILT] Disable Custom Worlds Advice
Minecraft asking you if you want to load a custom world is annoying. Let's fix it!
Eternal Starlight
A minecraft mod that adds the magical and mysterious starlight dimension.
Feature Recycler
A simple mod that prevents crashes between world generation mods caused by Minecraft's Feature Cycler.
Geophilic
A subtle-ish overhaul of vanilla Overworld biomes! Reworked!

Nature's Spirit
A minecraft mod which enhances world generation with new biomes, blocks, and items
Structory: Towers
Adds immersive biome-themed towers to the world, as a standalone option or add-on to Structory
Traveler's Titles (Fabric)
Epic, RPG-like titles when entering biomes & dimensions!
Medieval Buildings [Nether Edition]
New incredible medieval-style structures for the Nether!
Feur - Extension Fossil
[Vanilla+] 15 new structures of old fossil, dragon skull and monster camps !
Underwater Village - Oceanic Structures
Discover a lot of new oceanic structures!
World Preview
Allows you to preview a map / seed in the new world screen
Enderscape
Total overhaul of The End with new generation, biomes, mobs, and other features.
Survival island
Try to survive in a world made up of islands!
YUNG's Better Caves (Fabric)
Overhauled cave generation, underground lakes and rivers, lava oceans, and more!
Unnamed Desert
Additional structures for the desert and badlands biomes, focusing on an immersive expansion for the vanilla game.
The Afterdark
A truly immersive Deep Dark alternative dimension with many secrets and resources hidden behind. Explore a new world brought to you from the evil of the Deep Dark.

Profundis: Nine New Quality Cave Biomes
A world generation mod adding in nine new cave biomes, to make the underground more varied.
Mob Compack
(a couple of) Mobs for Biomes O' Plenty
Stellarity
Extreme rehaul of The End in a unique fantasy style, combined with biome and structure overhauls, new items, weapons and plenty of other content to discover.
Scorch!
Additional content and rebalancing for the nether.
Spooky Trees
Adds spooky trees to forest biomes
Nature Arise
add new biomes, improve vanilla biomes and vanilla style additions
Reliable Replacer
A lightweight utility for replacing one block with another, both during worldgen and afterward.
WorldWeaver: New Dawn
An unofficially maintained continuation of the BetterX Team's utility library for Fabric and NeoForge, designed to streamline common modding tasks, especially those related to world generation
BetterEnd: New Dawn
An unofficially maintained continuation of BetterEnd for Fabric and NeoForge, bringing the latest BetterEnd content to every supported Minecraft version alongside bug fixes, compatibility improvements, and expanded End world generation
Pharaohs Legacy
Explore a new desert of the Egyptian time!