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Minecraft Java 1.21 Mods

Browse 101 free mods for Minecraft Java 1.21 — popular picks include Prismara, Alternative Twilight (Remastered version), Better of Fabric 3.

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Prismara
1.21.1neoforge

Prismara

Dive into the fascinating world of Prismara, where magic and exploration come together. Explore vast biomes, face powerful bosses, and uncover the secrets of various schools of magic and witchcraft.

619downloads
Alternative Twilight  (Remastered version)
1.21.1neoforge

Alternative Twilight (Remastered version)

Added more mechanisms to the bosses of Twilight Forest, making it more time to prepare for them

605downloads
Better of Fabric 3
1.21.1fabric

Better of Fabric 3

Offers the latest & best of Vanilla+ Fabric mods on 1.21 | Explore breathtaking biomes & structures | Fight new bosses | Enter new dungeons & dimensions | Vanilla will feel empty after this

600downloads
Catch & Explore [Cobblemon Fabric]
1.21.1fabric

Catch & Explore [Cobblemon Fabric]

This Modpack offer an incredible avventure in the cobblemon word by adding new biomes and structures, and also some new mini-bosses

523downloads
Fractured Vanilla
1.21.1fabric

Fractured Vanilla

A 1.21.1 Fabric modpack with 300+ mods enhancing Minecraft. Enjoy stunning biomes, smooth animations, optimized performance, epic bosses, and QOL tweaks.

507downloads
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
Spiria Reincarnated Again!
1.21.1neoforge

Spiria Reincarnated Again!

With Tensura: Reincarnated and many addons, expanded dimensions, new structures, bosses, biomes, and plenty of quality-of-life mods, the pack offers an epic adventure that combines building, combat, and character progression.

416downloads
Craft Colonies
1.21.1neoforge

Craft Colonies

Build your own medieval colony, automate factories with Create, face epic bosses, and explore a vast world full of unique biomes, structures, and adventures.

373downloads
Mine RPG
1.21.1fabric

Mine RPG

This is combination of mods to add more content to Minecraft including bosses, biomes, creatures. This is more RPG adventure style while keeping all vanilla. No extra metals or materials are added on this pack.

323downloads
SuperRH bosses
1.21.1neoforge

SuperRH bosses

This mod adds some uh cool stuff like a very strong boss and a total red biome

302downloads
Warhaven
1.21.5fabric

Warhaven

Warhaven is an adventure-packed guild modpack for Minecraft! Explore new biomes, conquer dungeons, battle bosses, and build your guild to dominate the world. ⚔️🔥

260downloads
In the Journeys
1.21.1neoforge

In the Journeys

The mods expand Minecraft further with new ores, mobs, biomes, dungeons, bosses, and magic to discover.

251downloads
Fortune Craft Modpack
1.21.1neoforge

Fortune Craft Modpack

The Official Modpack for the FortuneCraft Modded Server. Explore Minecraft in a new light with a heavy focus on Create, with the addition of new Biomes, Blocks, Mobs and Bosses!

245downloads
The Choppa Age Update
1.21.1neoforge

The Choppa Age Update

This mod adds Choppas, Chopper Golems, Choppa Chests, and a new Choppa Golem boss to Minecraft. There are new items such as the cleavers, and a new extremely common biome called the wastelands.

170downloads
Mid Optimized Plus+
1.21.1fabric

Mid Optimized Plus+

it's Mid Optimized but with extra mods adding new bosses , mobs , biomes and more..

157downloads
Matthew's adventure
1.21.1neoforge

Matthew's adventure

The Hardwood Forest biome is a forest with dark hardwood trees and Ironbugs that drop iron nuggets. Players can tame a mob inspired by me using honey blocks and fight a boss named after my friend in the plains biome. Craft and discover many unique items.

110downloads
MehrPinguin
1.21.8fabric

MehrPinguin

A mod adding penguins, biomes, structures, rituals, and bosses – currently only available in German language.

100downloads
Chronotide
1.21.4neoforge

Chronotide

A time-bending dimension mod filled with fractured biomes, echoing bosses, and mysterious relics. AI-designed mod.

69downloads
Be happyy
1.21.1neoforge

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!

54downloads
Anti Magick: The Twilight Forest
1.21.1neoforge

Anti Magick: The Twilight Forest

Optional Anti Magick integration that suppresses Twilight Forest portals, magic abilities, summons, and selected boss actions

51downloads
Amethyst Age
1.21.8fabric

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! 💜

51downloads
Telum Solaris - At the Forest's Edge
1.21.1fabric

Telum Solaris - At the Forest's Edge

Telum Solaris aims to add new weapons, armor and boss to minecraft for every stage of minecraft's progression. It is currently my first and only project!

47downloads
Explorer's Journal
1.21

Explorer's Journal

A chat-driven exploration journal. Discover biomes and structures, get notifications, details, toggle a bossbar, view your full journal with /trigger

46downloads
Magma Craft Remastered
1.21.1neoforge

Magma Craft Remastered

A small mod adds: new biome, new ores, new structures, new boss, new tools, and more!

45downloads
Celestial Depths
1.21.8neoforge

Celestial Depths

This mod adds a bunch of new features such as, A new Dimension called The Astral Realm, New tools and ore, a new biome called the Celestial Wastelands, and a new mini boss called the Celestial Golem.

31downloads
Exto
1.21.1neoforge

Exto

This mod adds a unique horror mod boss that has a rare chance of spawning in the dark forest, the badlands etc.

22downloads
CharredNM
1.21.8neoforge

CharredNM

This mod adds a new biome, structure, weapon, and boss into the game, all to make your minecraft experience just a little bit better.

20downloads
Passive Mobs Twlight Re Aggro Data Pack (1.21.11, 1.21.1)
1.21.11

Passive Mobs Twlight Re Aggro Data Pack (1.21.11, 1.21.1)

Passive Mobs Twlight Re Aggro Data Pack fixes boss fights for the Passive Mobs mod. It forces creatures from the Twilight Forest to attack you again. This solves a problem where bosses like the Lich become impossible to beat when they stop fighting. Features: Forces all creatures and bosses in the Twilight Forest to attack […]

Sunken Spires Data Pack (1.21.11, 1.20.1) – Battle New Bosses in Lost
1.21.11

Sunken Spires Data Pack (1.21.11, 1.20.1) – Battle New Bosses in Lost

Sunken Spires Data Pack fills your ocean biomes with the lost ruins of an advanced prismarine civilization. It adds many new places to explore underwater, from fallen cities to strange floating spikes. You can fight new mini-bosses to get special loot or brush away sand at new archaeology sites. This data pack gives the oceans […]

Endercon Data Pack (1.21.11, 1.20.1) – A New Frontier
1.21.11

Endercon Data Pack (1.21.11, 1.20.1) – A New Frontier

Endercon Data Pack offers a fresh take on the End, introducing intricate level design, innovative traversal mechanics, and a diverse range of biomes. Explore a reimagined End dimension, filled with stunning landscapes, challenging puzzles, and epic boss battles. Enjoy playing this data pack! Features: The terrain has been shaped with traversal at its goal, expecting […]

ARKANE DOMAINS Mod (1.21.1, 1.20.1) – Explore Supernatural Boss
1.21.1forge

ARKANE DOMAINS Mod (1.21.1, 1.20.1) – Explore Supernatural Boss

ARKANE DOMAINS Mod is an adventure-survival mod that introduces the idea that each biome has its own “domain”, ruled by a powerful entity called Arkane. The mod makes the Minecraft world feel like a map of many supernatural realms, each with its own boss and unique loot. Features: The mod adds powerful Arkane entities that […]

Twilight Tweaks Mod (1.21.1, 1.20.1) – A True Final Boss to Conquer the Forest
1.21.1forge

Twilight Tweaks Mod (1.21.1, 1.20.1) – A True Final Boss to Conquer the Forest

Twilight Tweaks Mod adds configurable features to The Twilight Forest mod. This addon introduces a final boss spawner, giving the dimension a new ultimate challenge. By default, the spawner summons a very strong husk with reinforcements to fight. The mod also allows you to change what the spawner does, like summoning a different mob or […]

Twilight Forest Bosses Resurrection Mod (1.21.1, 1.20.1) – Re-Fight Bosses on
1.21.1neoforge

Twilight Forest Bosses Resurrection Mod (1.21.1, 1.20.1) – Re-Fight Bosses on

Twilight Forest Bosses Resurrection Mod is an addon for the Twilight Forest mod that lets you fight bosses again. After you defeat a boss, this mod gives you a way to bring them back for another battle. This means you can challenge powerful enemies like the Naga or the Lich as many times as you […]

Slayer's Beasts Mod (1.21.4, 1.20.1) – Diverse Mobs and Bosses
1.21.4fabric

Slayer's Beasts Mod (1.21.4, 1.20.1) – Diverse Mobs and Bosses

Slayer's Beasts Mod is an RPG mod in development, adding a large amount of fantasy content to the game. You will have access to new biomes to explore, new blocks, various dungeons, monsters, and much more. Features: Ant colonies Praying mantis Wither spider Ambient damselflies Ents (Oak & Birch – more to come) White/Black mushrooms […]

Custom Entity Attributes Mod (1.21.8, 1.20.1) – Flexible Mob Attribute System
1.21.8fabric

Custom Entity Attributes Mod (1.21.8, 1.20.1) – Flexible Mob Attribute System

Custom Entity Attributes Mod lets you add attribute modifiers to entities, either globally or under specific conditions. Attributes can vary by dimension, biome, difficulty, time, or even random chance, giving more depth and unpredictability to mobs. Features: Modify mob and boss attributes to make them stronger or weaker. Apply attributes conditionally based on dimension, biome, […]

The Conjurer Mod (1.21.4, 1.20.1) – Vindicator Boss
1.21.4forge

The Conjurer Mod (1.21.4, 1.20.1) – Vindicator Boss

The Conjurer Mod is a mod that adds a new structure to terrain generation: the theater. This theater will naturally generate in the Roofed Forest biome, and inside it, you'll only find hostile entities. Specifically, what you'll encounter here are Illagers. This structure is similar to Illager mansions. The theaters consist of several rooms, and […]