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Minecraft Java 1.21 Mods

Browse 335 free mods for Minecraft Java 1.21 — popular picks include Star Wars RPG - Star Wars & Stellaris, Dungeons And Discipline, Epic Bosses (Bosses).

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Star Wars RPG - Star Wars & Stellaris
1.21.1neoforge

Star Wars RPG - Star Wars & Stellaris

Experience Star Wars in Minecraft with iconic characters, powerful bosses, legendary planets, unique structures, and an epic adventure across the galaxy.

6.7kdownloads
Dungeons And Discipline
1.21.8neoforge

Dungeons And Discipline

Dungeons & Discipline adds a new dungeon with traps, enemies, and a tough boss, plus new blocks and several armor sets that let players adjust difficulty—and dominate each other.

6.5kdownloads
Epic Bosses (Bosses)
1.21.1neoforge

Epic Bosses (Bosses)

A mod for epic bosses in minecraft that adds a lot of unique content.

6.1kdownloads
Sabers And Bosses
1.21.8neoforge

Sabers And Bosses

Forge Six Legendary Krystal Saber Swords, each infused with unique Elemental Abilities. This mod introduces 4 NEW Bosses along with special drops for the Elder Guardian and Ender Dragon

5.8kdownloads
HyperStorm's Progressive Difficulty
1.21.1neoforge

HyperStorm's Progressive Difficulty

Progressive Difficulty is a mod that makes Minecraft tougher the more you play. Every boss you defeat doesn’t just mark a victory — it marks the beginning of a stronger, deadlier world.

5.7kdownloads
Marvel Multiverse
1.21.1neoforge

Marvel Multiverse

With this modpack you can transform into superheroes, hunt Hydra bosses and discover different structures.

5.1kdownloads
Multiplayer Craft
1.21forge

Multiplayer Craft

Its just a multiplayer modpack that everyone can use that includes new bosses, structures, and cool spells!

3.6kdownloads
Lava's banks dimensions and lucky blocks
1.21.1neoforge

Lava's banks dimensions and lucky blocks

a mod about exploration and fighting op bosses, best used in a modpack

2.8kdownloads
Dread's RPG
1.20.1forge

Dread's RPG

Welcome to Dread's RPG, Fight New Bosses, Complete Dungeons, New Items and More on this RPG Mod

2.2kdownloads
Create Aero-craft (Hardcore++)
1.21.1neoforge

Create Aero-craft (Hardcore++)

Its a modpack with the all new Create: Aeronautics mod and has a LOT of hard mods like bosses, zombies, thirst, and more! come join!

2.0kdownloads
KyuremBoss
1.21.1neoforge

KyuremBoss

Replaces the Ender Dragon with a colossal Gigamax Kyurem boss — 16,000 HP, two phases, ice AoE attacks, a spectacular aura, and direct attacks on your Cobblemon Pokémons!

1.9kdownloads
Twilight Tavern
1.21.1neoforge

Twilight Tavern

Magical, cozy cottage? Or a dark wizard dungeon? Your choice! No futuristic automation mods. The modpack is a curated mix of magical, fantasy and farm related mods with challenging, dark outside world full of monsters and bosses.

1.3kdownloads
Larry's Insane Cobblemon
1.21.1neoforge

Larry's Insane Cobblemon

Modpack focused on expanding cobblemon while providing an insane experience! Featuring tech mods, exploration mods with new boss encounters and some miscellaneous mods for QOL or fun!

1.2kdownloads
Create - The World(Arcane)
1.21.1neoforge

Create - The World(Arcane)

A High-Fantasy inspired Create centered RPG modpack, delve into the secrets of the arcane, develop engineering marvels, and face horrible monsters and bosses as you survive in a world at war.

1.1kdownloads
Aethelgard Odyssey
1.21.1fabric

Aethelgard Odyssey

Aethegard Odyssey is a medieval Minecraft modpack blending RPG mechanics with immersive exploration. It features custom dungeons, class-based progression. Expect challenging survival, magic, and epic boss fights.

1.1kdownloads
Echoes of the Realm(Dragon)
1.21.11fabric

Echoes of the Realm(Dragon)

This modpack adds mini-bosses, new crafting, and multiplayer challenges to enhance the vanilla Minecraft experience with friends.

1.0kdownloads
Base Invasion - Siege Core
1.20.1fabric

Base Invasion - Siege Core

Defend your base with the Siege Core against waves of monsters, boss battles, and air strikes. Collect rewards, repair the Core, play as a team, and customize wave difficulty, loot, threat, and overall difficulty in the settings.

976downloads
Evergrow
1.21.1neoforge

Evergrow

A brutal high-end adventure modpack packed with tons of new mobs, bosses, weapons and dimensions – heavily optimized and balanced for powerful PCs.

817downloads
Project: Create Extreme
1.21.1neoforge

Project: Create Extreme

Create with near All Addons, Chill no Bosses or Stress.

790downloads
Oramoun RPG
1.21.1fabric

Oramoun RPG

Oramoun RPG is a fantasy-driven Minecraft RPG modpack focused on exploration, powerful progression, and epic combat in a massive world filled with new biomes, legendary weapons, dragons, and challenging boss dungeons.

784downloads
EpicCraft Explore
1.21.1neoforge

EpicCraft Explore

Enhance Minecraft with new biomes, dungeons, and structures while keeping the vanilla feel! Discover improved villages, bosses, and exploration tools for a fresh adventure! 🚀

766downloads
ImmersiveRPG&MineColonies
1.21.1neoforge

ImmersiveRPG&MineColonies

An immersive, challenging RPG survival with classes, bosses and MineColonies – optimized for long‑term worlds and high render distances.

762downloads
Bosses and Armor's
1.21.1neoforge

Bosses and Armor's

Various Bosses & New Armor

729downloads
Just All Mods - JAM
1.21.1neoforge

Just All Mods - JAM

Jams is a modpack built for everybody you want bosses, cozy cooking and farming mods, new pets or tech mods? Well JAM has all of that plus more we have 1000+ quest in case you're new to mods come on and give it a try.

696downloads
Paladin's Journey
1.21.1neoforge

Paladin's Journey

A mod that adds new: bosses, ores, armor sets, weapon types, and even special legendary weapons. Made for the Paladin's SMP.

620downloads
Imbossible
1.21.11neoforge

Imbossible

Minecraft bosses with the Giant Slime and Frost Titan. Featuring custom attacks, summons, and unique weapon drops.

565downloads
My Name Is Giorno Giovanna and I Have An Entire Hotbar of Frying Pans
1.21forge

My Name Is Giorno Giovanna and I Have An Entire Hotbar of Frying Pans

A mod pack with a little something for the mage, the swordsman, the farmer, the explorer, the collector, and the guy that just wants to fight bosses.

560downloads
Solsun
1.21.4neoforge

Solsun

Add mob, boss, weapon, item and more

558downloads
Kingdoms Reborn
1.21.1neoforge

Kingdoms Reborn

200+ Mods + Resource Packs! Minecolonies, RPG Classes, L_Ender's Cataclysm, Bosses'Rise, Refined Storage, Ars Nouveau, and Create all in one!

524downloads
BossTweak 3D+
1.20.2

BossTweak 3D+

Official resource pack of Boss RPG: corrects visual problems, improves textures and adds 3D models. Essential for optimal experience.

350downloads
Celestia Sanctum
1.21.1neoforge

Celestia Sanctum

This is a Epic quest/story driven modpack that mixes magic and raw power for you to take on the bosses that are in your way. With a lot of new/old ways for you to discover

342downloads
MegaRPG
1.21.1neoforge

MegaRPG

11 new Dimensions | Over 20 Bosses | Complete Overhaul of the Overworld and Nether

150downloads
Vyrnax MMORPG Core | Ultimate RPG | Classes, Bosses, Dungeons & More
1.21spigot

Vyrnax MMORPG Core | Ultimate RPG | Classes, Bosses, Dungeons & More

Build your complete Minecraft MMORPG with one powerful modular core

27downloads
Ironbound Combat Tactics Mod (1.21.11, 1.21.1) – Master RPG Classes
1.21.11

Ironbound Combat Tactics Mod (1.21.11, 1.21.1) – Master RPG Classes

Ironbound Combat Tactics Mod brings class progression, special talents, and fresh combat mechanics into your game. You can battle bosses that respawn after defeat, collect legendary gear, and build your character with active and passive abilities. Enemies grow stronger as you advance, dropping better loot along the way. The mod also reworks enchanting rules and […]

Orbital Wolf Cannon Data Pack (26.2, 1.21.11) – Summon Massive Armies
1.21.11

Orbital Wolf Cannon Data Pack (26.2, 1.21.11) – Summon Massive Armies

Orbital Wolf Cannon Data Pack equips you with special fishing rods that summon massive waves of powered-up war dogs. You can call in dozens or even hundreds of loyal wolves to overwhelm hostile monsters, defend your base, or crush tough bosses. Every summoned dog comes with extra speed, fire resistance, and boosted attack strength to […]

Threateningly Mobs Continued Mod (26.2, 1.21.1) – Hunt Dangerous Beasts
1.21.1

Threateningly Mobs Continued Mod (26.2, 1.21.1) – Hunt Dangerous Beasts

Threateningly Mobs Continued Mod fills your world with dangerous creatures, summoning bosses, structures, and strong gear. It populates vanilla biomes with high-health monsters that hunt livestock and challenge survival players. You can forge unique weapons, explore dungeons and altars across multiple biomes, and open a portal to an uncharted dimension. Features: Spawns hostile creatures across […]