Minecraft Java 1.21 Mods
Browse 3,567 free mods for Minecraft Java 1.21 — popular picks include Biome Replacer, Monster Plus, [Let's Do] Meadow.
Updated daily
Biome Replacer
A quick way to get rid of a biome. Useful for tweaking datapack-based generators (like Terralith) that don't have a convenient configuration.
Monster Plus
New mobs of each and every flavor to improve the exploration experience: biome-exclusive monsters, new challenges and more!
[Let's Do] Meadow
Hey Wanderer! Sit down, enjoy a piece of cheese, and take a look at the new mountain pasture - cliffs, beautiful forests, clearings, and lots of colorful flowers.
Illager Warship
Adds a big illager warship to the oceans
Better Biome Reblend
Updated version of Better Biome Blend, a mod that improves and fixes biome color blending
Dynamic Trees - Biomes O' Plenty
Compatibility Mod between Dynamic Trees and Biomes O' Plenty
Oh The Biomes We've Gone
An astounding sequel to the original BYG mod for 1.20.1+ with over 50+ biomes ranging from the magical to the realistic and all breathtaking!
Umbral Skies
A mod for Twilight Forest-Aether content fusion
Geophilic
A subtle-ish overhaul of vanilla Overworld biomes! Reworked!
Voidscape
Delve into the depths of the Void

Nature's Spirit
A minecraft mod which enhances world generation with new biomes, blocks, and items
Climate Rivers
Make your rivers stop looking like mistakes – and start flowing with style.
Cave Dust
Cave Dust is a Minecraft mod that adds the white ash particle from the Basalt Deltas biome to the underground to simulate dust!
Ocean Floor - Clay Sand and Dirt
Spawns patches of Clay, Sand, and Dirt, within the Deep Dcean layer of boring gravel
Spawn Balance Utility
Allow you to control spawn weights and group size of mobs by Biome and Structure. This controls the mixture of mobs that spawn, it does not modify the Spawn Cap like our other mod, "Spawncap Control Utility".
Zombie Extreme
This is a Big Mod that adds a bunch of new mechanics and a large number of zombies and infected to your minecraft world. In order to study a new biome, you need a Chemical Protective Suit, if you do not break at least one part, most of the radiation will i
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!
Snuffles
Adds Snuffles, a new mob to snowy biomes!
Mushroom Quest
Forage mushrooms and live out your cottagecore fantasies!
Repurposed Structures - Better Nether Fortress Compat Datapack
Add a giant Jungle Fortress into the world based on Yung's Better Nether Fortress mod!
Oh The Trees You'll Grow
Tree library used by popular mods such as Oh The Biomes You'll Go.
Farmer's Cutting: Oh The Biomes We've Gone
Adds Farmer's Delight cutting recipes for Oh The Biomes We've Gone
Terrestria
A mod for Fabric enhancing the detail of Minecraft with unique and vibrant biomes. Inspired by ExtrabiomesXL.
Awesome Dungeon - Forge
This mod adds structures/dungeons to your world.
Regrowth
Creatures eat and regrow plants. Villagers improve their villages.
Every Compat (Wood Good)
Universal Wood Compat: Quark, Twilight Forest, Twigs, Another Furniture, Farmers Delight, Macaw's, Valhelsia, Architects Palette, Deco Blocks, Crayfish FM
Snow Pig [Forge]
Ever wanted a pig in snowy biomes? No? Well here you go anyway!
Pufferfish's Biome Dither [Fabric & Forge & NeoForge]
Adds dithering on the biome borders to the game.
Bibliobiomes Legacy
Bibliobiomes Legacy is an addon for Bibliocraft Legacy that adds support for wood types from Biomes O' Plenty, Oh The Biomes We've Gone and Regions Unexplored.
Custom Entity Attributes (Modpack Utils Series)
Change entity attributes globally, per dimension, biome, difficulty, or time. With % chances too!
[Let's Do] BloomingNature
Explore a redesigned overworld: new animals, reshaped biomes, livelier landscapes.
Macaw's Oh The Biomes You'll Go / We've Gone
A compatibility between Macaw's Mods and the different woods and stones of Oh The Biomes You'll Go / We've Gone
Awesome Dungeon - Fabric
This mod adds structures/dungeons to your world.
Feur - Extension Fossil
[Vanilla+] 15 new structures of old fossil, dragon skull and monster camps !