Minecraft Java 1.21 Mods
Browse 1,215 free mods for Minecraft Java 1.21 — popular picks include Survival island, YUNG's Better Caves (Fabric), Unnamed Desert.
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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.
Astral Dimension
Explore 2 magical dimensions shaped by the will of a multidimensional being.
[Axanthic Studios] Lands of Icaria
AGS presents: A vast new dimension inspired by ancient Greek and Egyptian mythology.
Gaia Dimension
A world full of minerals, crystals, and gemstones
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.
Ulterlands: Worlds Apart
Go beyond dimensions; explore a realm unknown yet familiar.
Incendium Biomes Only
Removes structures, items, mobs and bosses from Incendium, leaving only the biomes and terrain.
Nyctophobia
Nyctophobia adds dark, foggy and unsettling biomes to the Overworld to make your adventure more thrilling and challenging.
Astrological (End Terrain & Biomes)
Overhauling the end with new terrain generation and blocks.
New Game - An Improved Experience | 26.1.2 UPDATE!
An awesome modpack! | Improve the vanilla experience, adding biomes, creatures, elements and other interesting features.
Macabre - Call of False Prophets
Flesh and gore dimension, hard enemies and good rewards.
Repurposed Structures - Better Jungle Temples Compat
Change RS Temples to be in Better Jungle Temple's style
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.
Dungeons and Taverns Jungle Temple Overhaul
Overhauls Jungle Temples with 4 Variants using new loot tables alongside the Vanilla Loot Table and can have archeology elements inside as well as new puzzles
Dreamwoods
Vanilla and new biomes in their full glory: lush terrain, big trees and flora diversity
Scorch!
Additional content and rebalancing for the nether.
Nature Arise
add new biomes, improve vanilla biomes and vanilla style additions
Crystal Chronicles - Iron's Spells 'n Spellbooks
Addon for Iron's Spells n Spellbooks - expanding the schools of magic with unique armors, weapons and biomes.
Reliable Replacer
A lightweight utility for replacing one block with another, both during worldgen and afterward.
Even Better Nether
A Remake of the Popular Nether Overhaul Mod, Better Nether; Modernized
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
Tense Ambience
This mod enhances the atmosphere of all default dimensions with biome-specific, tense ambient sounds (Perfect for Horror Modpacks).
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!
Mystic's Biomes
Explore a world full of color.
Heaven Dimension Mod
Fly up to Heaven in Minecraft! Find villages with OP loot and build your base in a peaceful environment
Spellblades and Such: Hexblade
DISCONTINUED - Hexblade Faction Mobs for Spellblades and Such!
Epic Terrain Compatible
Epic Terrain biome-compatible version
DARK MIST
Adds an entity surrounded by darkness that hunts you at midnight...
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!
Homesteads - Villager Expansion & New Professions
Homesteads is for the villagers who would prefer to forge their own path in the wilds. This mod adds 5 new Villagers, the Beekeeper, The Lumberjack, The Trapper, The Prospector and The Forager. As well as a variety of new structures for them to inhabit.