Minecraft Java 1.21 Mods
Browse 1,209 free mods for Minecraft Java 1.21 — popular picks include Hazelia, Ships Ahoy!, Biome Replacer (Neoforge).
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Hazelia
Hazelia dimension, creatures, and boss!
Ships Ahoy!
An exploration/adventure based mod pack with new biomes, challenging mobs, ships, and enhanced vanilla structures!
Biome Replacer (Neoforge)
A quick way to get rid of a biome. Useful for tweaking datapack-based generators (like Terralith) that don't have a convenient configuration
Abandoned Cabins
Adds Abandoned Cabins to forest biomes.
Birch Watchtower - Structure ✅
Birch Watchtower is a modded Minecraft structure designed as a lookout tower, naturally integrated into birch biomes and intended for exploration, observation, and environmental atmosphere.
Bare Compasses (Bare Bones x Nature's/Explorer's Compass)
A Bare Bones x Nature's/Explorer's Compass Resource pack
Structure nature(Alpha)
we add everything we think is fun anything that will enhance the minecraft experience
Savanna Watchtower - Structure ✅
Savanna Watchtower is a modded Minecraft structure designed as a lookout tower, naturally integrated into savanna biomes and intended for exploration, observation, and environmental atmosphere.
Nature+
A mod that adds improvements to nature! This mod includes Oil, Trash, Polluted Water, Trash Dumps, and even Wallmart!
[World Generator] Winter Apocalypse++
Makes the world cold and snowy in every biome in the overworld.
The Polluted World
A Dimension that is accessed through the deep dark that contains 7 biomes, 4 ores, 2 armor sets, magical weapons, 6 mobs, archaeology and decontamination system, and more on the way!
HeartLoven
The most romantic Minecraft mod for couples! Hold hands, build a home together, and go on unforgettable dates — all in-game.
Mushroom Fields Dimension
Add mushroom fields single biome world type as separate dimension.
Multi Village Selector
A mod for allowing modpack creators to have as many village replacing mods as they like, setting biome, weights, and frequency of pool structures.
Amellyst
This is a nice modpack that adds new biomes, items, mobs and structures.
Ocean Revamp
New ocean biomes to improve your aquatic journeys in vanilla
Alternate Create Of Fiery Items (ACOFI)
ACOFI is a mod that changes the craft of fiery equipment from the Twilight Forest
Badlands Biomes Dimension
Add badlands biomes as separate dimension.
Santa Claus Dimension
Explore the Santa Dimension and find gifts!
Geo Expansion
Explore New Caves, New Biomes and More in this unique Geology mod.
Global Emeralds
Unlocks Emerald Ore to spawn in all biomes.
The Darkworld Dimension
This datapacks add a new dimension, a new biome, a new enchant, a new block, new mobs and flying boots!
Biome Squisher
A library mod for adding biomes by "squishing" other biomes out of the way
No Silverfish
Removes silverfish from spawning in mountain biomes underground.
Mining Dimension by GuyguyTime
simply a mining dimension
Mijoma's Additional Additions
New biomes, new structures, new mobs, AND new technology! Along with revamping vanilla minecraft elements, this modpack also adds new enemies, interdimensional travel, engineering and tinkering, and even magic!

Miracleforest
New lore, new biomes, new types of trees, and new weapons and tools. A brand new journey awaits you!
Biome Fest
A vanilla-like mod adding 14 new biomes without any new blocks or items.
Dreamwoods Original
Vanilla biomes rework+new biomes, big and realistic trees and enchanced flora - everything created only with vanilla blocks
SkyBlock Terralith Compat
Explore Terralith biomes in a void world! This pack adds compatibility between the SkyBlock and Terralith Datapacks.
Forever Winter
Makes all biomes on the overworld snowy.
More Little Decorations
Adds details in the form of different stones from different materials to each biome. In the future I plan to add more details such as sticks flowers fallen leaves and the like.
d3v_c's Terrain Overhaul
Fabric worldgen overhaul for 1.21.11: taller mountains, deeper terrain, rebalanced biome climate zones, more natural caves, and improved underwater shaping for realistic Overworld landscapes.
BetterEnd Fix for NeoForge
A datapack that allows Better End biomes to generate properly for Sinytra Connector.
CustomBiomeColors_Continue
A plugin that help you change biome colors (grass, foliage, water...) without resourcepack
The Endless Horizons
This mod adds different utilities that have the Horizons theme. For example, the primordial trials, dungeons with great difficulty, but that give you exclusive objects. If you love exploration, you will surely love the Endless Horizons mod.