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Minecraft Java 1.21 Mods

Browse 519 free mods for Minecraft Java 1.21 — popular picks include SpellCraft - Magic World, Minecraft-The CATASTROPHE mod, Dyable BossBars.

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519 mods

1.21.1forge

SpellCraft - Magic World

A Harry Potter-inspired magic mod adding wands, spells, wizard dueling, potions, a leveling system, magical creatures, a wizarding village with traders, and dungeons — including a boss lair and a dementor-guarded prison.

566downloads

1.21.8neoforge

Minecraft-The CATASTROPHE mod

Adds new bosses to the base game, and overhauls the progression

565downloads

1.18.2

Dyable BossBars

dye bossbars different colors

556downloads

1.21.1neoforge

Adaptive horde

Adaptive Horde adds progression-based mob waves that scale per player gear score. Configure custom waves, drops, and pacing per dimension (Overworld/Nether/End). Supports modded mobs/weapons with JSON overrides, boss bars, and live reload.

553downloads

1.21.1neoforge

Labyrythm

Labyrythm is a Neoforge mod for Minecraft 1.21.1 that challenges players with a procedurally generated, sound-reactive maze and a unique boss encounter.

552downloads

1.21.4fabric

Darkest Garden

Adds a new boss to the Pale Garden!!!

540downloads

1.16.3

Quest Dimensions & Mob Hunts

A Minecraft quest datapack focused on mob hunting, dimensions, and milestone-based rewards. Progress through separate quests such as Overworld, Nether, End, Boss, Zombies, Undead, Arthropods, Animals, and Total Hostiles. Earn bonus experience

539downloads

1.21.2

Kaths Simple Bossmobs

Adding a simple bossmob out of some enemies.

529downloads

1.20.6spigot

MythicRewards | Boss kill reward/drop plugin with custom rule support | 1.20.5+

MythicMobs Support - Top damage rewards - 6+ reward type built-in - Create your own reward rule

518downloads

1.21.1neoforge

Hyrinity (Legacy)

An overall content mod adding progression, bosses, dimensions and more!

516downloads

1.21.11fabric

creeper-apocalypse

Mob Replacement System ALL mobs spawn as Creepers! with exceptions Exceptions that remain normal Blazes you still need blaze rods! Villagers or trading Ender Dragon final boss remains Iron Golem

505downloads

1.21.1fabric

Tales of the Third Age - Balrog

Adds a Balrog Boss to your Middle Earth modding experience!

503downloads

1.21.5fabric

Breeze Island

Adds a sky island with loot and a boss fight.

493downloads

1.21.3

Spells & Sorcery

Datapack that adds Spellbooks, Alchemy, New Items, New Mobs, and even a New Boss!

490downloads

1.21.4neoforge

Boss Update

This mod adds three new distinct bosses with custom drops and powers. (also available in multiplayer worlds.)

481downloads

1.21.1neoforge

Prototype 0.3

currently just adds some custom armor and weapons not much. later there will be bosses, extra mobs, A third set of armor, even more weapons, maybe vehicles, and a lot more.

458downloads

1.21.3

Deepslate Titan Boss

A datapack that adds a new boss : the Deepslate Titan

444downloads

1.21.1neoforge

Crowned Herobrine [LEGACY]

Adds a new boss called Crowned Herobrine that is a formidable opponent. He drops a useful crown ;)

441downloads

1.21.4neoforge

Cowzilla

This mod adds in hostile cows, giant cows, and huge cow boss as well as cow based weapons.

438downloads

1.20.1

Daily Boss x Legendary Monsters

Compat Daily Boss with Legendary Monsters

434downloads

1.21fabric

Muck Bosses

A Mod that add Muck Bosses To Minecraft!

419downloads

1.21.4

Every Single Beast

Diversify your journey through the world of Minecraft with new mobs, bosses and structures! 🌱❄️⚡

416downloads

1.21.6

Magworm

a difficult but simple boss, also yet another A.B.E. pack

415downloads

1.21.1neoforge

bear5

A joke horror mod that adds stupid monsters, and a boss.

391downloads

1.21.1neoforge

Valentine's Girlfriends

Adds new interactive npc's and bosses!

384downloads

1.21.1neoforge

More Ore -

Mod that adds more content and more ore to minecraft. New content includes bosses, dimensions, weapons.

384downloads

1.21.1fabric

World's Whisper

Conquer shape-shifting bosses and craft elemental gear in a realm ruled by four mystical seasons.

384downloads

1.21.1neoforge

SuperRH bosses

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

359downloads

1.21.1fabric

Robot Legion

Build a steampunk robot army. Workers automate jobs while combatants fight beside you through three boss dungeons. Trade with engineer villagers for rare parts.

348downloads

1.21

NexusMobs

NexusMobs is a comprehensive RPG plugin that transforms your Minecraft server by introducing over 20 unique bosses

342downloads

1.2.1

ModernBosses

🟣 ModernBosses: The Corrupted Awakening ModernBosses is a lightweight, powerful, and highly customizable Minecraft plugin (1.20.x) that allows server administrators to transform any vanilla hostile mob into a formidable Corrupted Boss.

337downloads

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.

335downloads