Quilt Mods for Minecraft 1.21
Browse 77 free Quilt mods for Minecraft 1.21 — popular picks include The Twilight Forest, Geophilic – Vanilla Biome Overhauls, Incendium.
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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.
Geophilic – Vanilla Biome Overhauls
A subtle-ish overhaul of vanilla Overworld biomes! Reworked!
Incendium
New biomes and structures with the vanilla blocks! (1.18+)
Hearths
A handful of additions to vanilla Nether biomes
The Bumblezone (Fabric)
An unBEElievable dimension full of bees to BEEfriend!
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!
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!
Structory: Towers
Adds immersive biome-themed towers to the world, as a standalone option or add-on to Structory
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!
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.
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.
Nature Arise
add new biomes, improve vanilla biomes and vanilla style additions
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
Cliff under a Tree (Clifftree) - Mod Version
A vanilla-styled worldgen overhaul, with new biomes and touches to existing ones
Cherry Grove Villages
A completely new vanilla like village in minecraft Cherry Grove biome!
BetterNether: New Dawn
An unofficially maintained continuation of BetterNether for Fabric and NeoForge, bringing the latest BetterNether content to every supported Minecraft version alongside bug fixes, compatibility improvements, and expanded Nether world generation
Unnamed Sea
Additional structures for the sea and beach biomes, focusing on an immersive expansion for the vanilla game.
Better Lush Caves
Some much-needed upgrades for the lush cave biome, and some changes to moss.
Stellarity ~ Lite
Complete rehaul of The End with 23 new gorgeous biomes, world-gen only!
The Ceilands
A surreal dimension with bedrock ceiling but no bedrock floor!
Superflat Dimensions
Collection of datapacks that create Superflat Overworld, Nether, and End Dimensions, with all Structures and Biomes.
Sculk Depths
adds a new dimension accessed via the ancient cities in the deep dark biome
Exotelcraft
A large multi-feature Minecraft mod mainly adding the Exotel dimension, toggleable April Fools' snapshot content, overworld additions, craftable world map, and optional Bedrock-styled UI.
Larger biomes
Makes biomes bigger (but not as big as in Large Biomes preset)
Better Cave Worlds
Datapack that creates Cave Worlds, based on the old preset, featuring all biomes, ocean caves, and most structures.
Revamped Floating Islands
Datapack that creates Floating Island worlds based on the old preset, with all biomes and structures. Additionally featuring floating oceans and rivers.
RPGTitles
Small, cosmetic datapack that adds titles to small things in the game! See the dimension name when you switch dimension, see the current biome you are in and maybe get something when you kill a powerful foe..

Alex's Caves: Refabricated
An unofficial Fabric port of 'Alex's Caves' - Explore five new rare cave biomes hidden under the surface of the Overworld...
Featurify - WorldGen Control
A worldgen configuration mod that eliminates the need for datapacks. Add, disable, replace any feature, replace, disable any biome with another biome.