Minecraft Java 1.21 Mods
Browse 3,579 free mods for Minecraft Java 1.21 — popular picks include The Tree, Diabolical Islands x Incendium, xBiomeDisplay - Discover the Depths of xBiome.
Updated daily
The Tree
This mod will add an evil tree, a living stump, an evil forest soul, and a good version of it.
Diabolical Islands x Incendium
Make Diabolical Islands compatible with Incendium. After installing this mod, Diabolical Islands will generate Incendium's biomes and structures following its own floating island rules.
xBiomeDisplay - Discover the Depths of xBiome
Unlock the secrets of ecosystems, visualize your data, and explore a new world of possibilities.
The Jungle dimension.
Adds The Jungle dimension, where only Jungles, Sparse Jungles and Rivers can spawn.
Humid Oxidation
A Block That Makes Copper Oxidise Faster In Humid Biomes Or When Near A Spore Blossom
Mainworld
Mainworld... mod introduces several new mechanics,items,and armor. it also adds about 30 diffferent structures,each suited to its own biome,as well as new biomes. Explore the world and discover its fill potential, know that they are always watching...
Savi Over a game
My first mod introducing: Savi, Biome and more!
Windswept Hills Grass Everywhere!
Changes the Grass colormap so it always matches the Windswept Hills biome color – Part of the "Oh My Colormap!" collection.
Be happyy
🎮 Be Happy is a NeoForge 1.21.1 modpack for long-term survival with friends or solo. Build flying machines with Create Aeronautics, automate factories with Mekanism & AE2, fight Cataclysm bosses, explore new biomes & YUNG's dungeons — not a vanilla pack!
Anti Magick: The Twilight Forest
Optional Anti Magick integration that suppresses Twilight Forest portals, magic abilities, summons, and selected boss actions
The Fun Mod!
This mod is just a couple of things i wanted to test in MCreator! Enchantments, Mobs, And Biomes are featured!
Primavera
A modpack for friends! A kitchen-sink pack that's made for Create: Aeronautics and No Man's Land/Nature's Spirit.
Badlands Foliage Everywhere!
Changes the Foliage colormap so it always matches the Badlands biome color – Part of the "Oh My Colormap!" collection.
Overgrown Nature
Generate worlds fully covered in forests, boosting every plant life form generation rate.
Seed Based World Generation
Based on the world seed chosen are: biomes that will generate (ussualy a few biomes), the ruggedness of the world and height( tho it can still vary). The seed does not determine the temperature of the biomes and the amount of vegetation(plains/forest)
Biome Updated
This mod Aims to Update all Biomes on Minecraft. Start from the Plains Biome and Ending on The End

Color Biomes
This Adds 4 New Color Biomes Red, Blue, Green and yellow! (more coming soon if you get it)
Swamp Foliage Everywhere!
Changes the Foliage colormap so it always matches the Swamp biome color – Part of the "Oh My Colormap!" collection.
Tototerror
Buffs Totodile into a freak of nature
Oh The Biomes We've Engineered
Compatibility Bridge Between Oh The Biomes We've Gone and Immersive Engineering.
Cozy Horizons
A cozy Minecraft modpack that expands the vanilla experience with new structures, biomes, mobs, items, and building options for a relaxing and immersive adventure.
Frostium
An mod for update snowy biomes, adding Cryorite ore, new mobs, and some structures. Explore the updated snowy landscapes and gear up with themed tools.

The Voobious Mod
a mod that includes some biomes and mobs with recipes and a dimension to go with it
Biome Query
Adds one item that lets you easily see what biome the block you are clicking on is in.
Swamp (brown) Grass Everywhere!
Changes the Grass colormap so it always matches the Swamp (brown) biome color – Part of the "Oh My Colormap!" collection.
BiomeEvolution
BiomeEvolution turns Minecraft biomes into living ecosystems that respond to player behavior.
BetterWandering
Completely replaces Wandering Trader deals with balanced, biome-specific offers split across three rarity tiers.
ChunkMix
Every chunk - New biome! Spice up your world!
Jungle's Challenges
A collection of every challenge from me
Experimental Worldgen
Yet another data pack that adds biome variants to the game.
Far's Wilder Tweaks
This datapack makes some tweaks to many of Minecraft's biomes with new animal variants and generated features to make the world more wilder!
P6 Korupcja
This mod adds P6. P6's tools and P6's fat. There is also a biome where he naturally spawns, which is in the forest.
Expedition Titles
An addon for the mod Levelplate that adds titles when traveling through biomes.
Amethyst Age
Expand Minecraft's amethyst progression with new tools, armor, weapons, food, a custom biome, Crystal Merchant, Crystal Warrior boss, advancements, and unique abilities like 3×3 mining, Tree Chopper, and Crystal Charge! 💜
A Roving Journey To Tellus
Explore five new Overworld biomes and the Forgotten Dimension. Find new wood variants, new ores and weapons!
Blue...
A small but content-packed mod that adds a brand new biome, unique mobs, custom ore, and fun weapons like Silly Gun and Katana.