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Minecraft Java 1.21 Mods

Browse 61 free mods for Minecraft Java 1.21 — popular picks include Survival island, Reliable Replacer, Hydrological (Overworld Terrain & Biomes).

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Survival island
1.21.1fabric

Survival island

Try to survive in a world made up of islands!

1.8Mdownloads
Reliable Replacer
1.21.1neoforge

Reliable Replacer

A lightweight utility for replacing one block with another, both during worldgen and afterward.

611kdownloads
Hydrological (Overworld Terrain & Biomes)
1.20.2forge

Hydrological (Overworld Terrain & Biomes)

Overworld biome and terrain fantasy-style worldgen mod.

71kdownloads
Dimension Expansion
1.21.1neoforge

Dimension Expansion

Designed for 1.21.1, add new dimensions to your modpack with teleporter blocks and fun new features. Deep Beneath, Mining Dim and Stoneblock. More to come!

48kdownloads
Monumental Experience - Creatures Across the World
1.20.1forge

Monumental Experience - Creatures Across the World

Monumental Experience V: Creatures Across the World expands the series with Cobblemon and Aether integration, living biomes, and exploration-driven progression—creating a survival world focused on discovery and long-term building.

20kdownloads
Pumpkin Survival House
1.21.8neoforge

Pumpkin Survival House

Adds a Pumpkin Survival House, a small and cozy starter home built inside a giant pumpkin.

14kdownloads
Over the Sky | Floating Islands, Mobs and Many Secrets!
1.21.1neoforge

Over the Sky | Floating Islands, Mobs and Many Secrets!

Survive in a world made up entirely of floating islands! Discover all the secrets, mobs, and hidden biomes.

6.0kdownloads
Void One Block
1.21neoforge

Void One Block

A world type that turns Minecraft into a true void survival experience — while keeping progression, structures, biomes, and mod compatibility intact.

5.8kdownloads
Pixelmon Wild Realms
1.21.1neoforge

Pixelmon Wild Realms

Explore a vibrant world of wild biomes, magical ruins, and epic adventures. Catch, train, and battle in a beautifully enhanced Pixelmon survival experience full of exploration and discovery.

5.0kdownloads
Biome Powder: Paint Biomes
1.21.9

Biome Powder: Paint Biomes

Change Biomes in your Builds to make them Extra Special! Survival-Friendly & for Creative. Modify Foliage & Grass colors into all 16 vanilla colors.

4.7kdownloads
StarSky Shaders
1.21.4fabric

StarSky Shaders

A shader pack with fast shaders, new structures, new biomes, and way more!!!

4.2kdownloads
SkyBlock Terralith Compat
1.21

SkyBlock Terralith Compat

Explore Terralith biomes in a void world! This pack adds compatibility between the SkyBlock and Terralith Datapacks.

2.7kdownloads
SkyBlock Nullscape Compat
1.21

SkyBlock Nullscape Compat

Explore Nullscape biomes in a void world! This pack adds compatibility between the SkyBlock and Nullscape Datapacks.

2.3kdownloads
Survival Not Guaranteed
1.21.1neoforge

Survival Not Guaranteed

Dive into an expansive Minecraft modpack that blends challenging survival mechanics like temperature and thirst with extensive exploration of overhauled dungeons and new biomes, all while offering dynamic combat, magical mastery, and complex automation.

1.8kdownloads
MOMB梦织谷服务器整合包
1.21.1neoforge

MOMB梦织谷服务器整合包

Contains survival auxiliary mods such as Twilight Forest, Farmer's Delight, and Refined Storage.

1.4kdownloads
Dark's Trials of the Unknown
1.21.1neoforge

Dark's Trials of the Unknown

Dark's Trials of the Unknown is a high-adventure pack focused on exploration, featuring new biomes, dangerous dimensions, and custom structures, with progression based on survival and discovery rather than rushing the endgame.

1.1kdownloads
Isekai DX
1.20.1forge

Isekai DX

A magic survival RPG modpack inspired by isekai anime. Explore new biomes, dimensions, and face survival challenges.

930downloads
EBFsmp
1.19.2forge

EBFsmp

The mod includes new biomes, decorations, tools and armor.

907downloads
The Frostland
1.21.8neoforge

The Frostland

Explore a dangerous frozen dimension filled with icy biomes, deadly enemies, and hidden ancient structures. Discover new ores, weapons, and survival challenges as you fight to survive the Frostlands.

856downloads
Etar Experience
1.21.11fabric

Etar Experience

Welcome to Etar Survival! A definitive Vanilla+ pack focused on exploration, building, and adventure. Discover new biomes, dungeons, and mobs. Includes the official Etar Experience resource pack for a beautiful, cohesive look.

835downloads
A Crazy Adventure: Science & Survival
1.21.1neoforge

A Crazy Adventure: Science & Survival

A blocky landscape with forests, mountains, a backpacked character facing a machine, and a purple Nether portal under bold white title text.

716downloads
Super Survival | By: Reb2y
1.21.1fabric

Super Survival | By: Reb2y

Impressive survival with new biomes and new mobs!

705downloads
Minekarta Survival - Enhanced Vanilla Experience with Custom Biome Daily Quest and More
1.21.1fabric

Minekarta Survival - Enhanced Vanilla Experience with Custom Biome Daily Quest and More

A vanilla-style survival experience with a medieval atmosphere. Lightweight, immersive, and perfect for long-term worlds or community servers.

700downloads
Luxxor
1.21.1neoforge

Luxxor

Luxxor is a performance-optimized, Hexxit-inspired adventure modpack packed with new biomes, dungeons, stronger combat, and useful QoL mods for smooth exploration and loot-focused survival.

596downloads
Light Survivality 1.21.1
1.21.1fabric

Light Survivality 1.21.1

A Minecraft Vanilla Plus modpack adds quality-of-life improvements and new biomes, enhancing gameplay while keeping the original experience familiar.

577downloads
RealmsQuest
1.20.1forge

RealmsQuest

RealmQuest - Fabric, designed for players who love epic adventures with original dungeons, bosses, and spells. It features expanded biomes, new tools.

427downloads
Cold Biomes Only
1.21.9

Cold Biomes Only

Challenge yourself by making the world only cold biomes. Great for a hardcore winter challenge!

415downloads
SurvivalReborn
1.21forge

SurvivalReborn

Survival Reborn enhances Minecraft survival with dynamic terrain, new biomes, and unique mobs, offering fresh challenges and gameplay mechanics. Explore, craft, and survive in a world full of adventure, ancient secrets, and powerful items!

408downloads
Christmas in Cobblemon
1.21.1fabric

Christmas in Cobblemon

This Minecraft modpack centers on Cobblemon, adding Pokémon-style creatures to explore, battle, and collect. Expanded biomes, structures, and progression mods create a richer world for survival and team building.

381downloads
Arctic Odyssey: Tundra Tales
1.21fabric

Arctic Odyssey: Tundra Tales

Arctic Odyssey: Tundra Tales is a fascinating mod pack that immerses players in a frigid, snowy landscape filled with adventure and exploration. Set in a vast tundra, this mod pack enhances the survival experience by introducing new biomes, icy creatures,

374downloads
JFH (just for hardcore)
1.21.8fabric

JFH (just for hardcore)

this modpack adds tons of stuff that the perfect hardcore world would need, it's made for multiplayer but works for singleplayer too, it adds stuff like biomes, better world gen, bigger caves, voice chat, furniture and much much more

350downloads
Far Frozen
1.21.2

Far Frozen

Will you be able to survive and escape the frosty, Far Frozen landscape? All cold biomes. Hard early game survival.

349downloads
Better Reimagined
1.21.11fabric

Better Reimagined

Enjoy this survival experience in an epic and immersive adventure. It introduces new mechanics that enrich gameplay with dynamic combat, while vibrant new biomes and impressive structures encourage exploration with unique and challenging mobs

214downloads
Bobi's Realm
1.21.10fabric

Bobi's Realm

Explore Bobi's Realm, a massive, realistic Minecraft world. No survival pressures—just endless landscapes, cinematic weather, and immersive biomes. Adventure, creativity, and exploration await every corner of this breathtaking realm.

209downloads
Bachnet Survival
1.21.1neoforge

Bachnet Survival

Bachnet – A cozy Minecraft modpack combining technology and farming. Automate resources, grow crops, and enjoy a relaxed gameplay where machines and nature work hand in hand.

198downloads
IUT AIX
1.21.1fabric

IUT AIX

Un modpack pour le serveur IUT MINECRAFT de la survie optimisé avec voicechat, nouveaux biomes et structures ! A modpack for the IUT MINECRAFT survival server, optimized with voice chat, new biomes, and structure !

195downloads