Minecraft Java 1.21 Mods
Browse 519 free mods for Minecraft Java 1.21 — popular picks include ♂️ TheMob ✦ Advanced Custom Mobs & Bosses, ⭐ ProMB | ProMythicBoss, In the Journeys.
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♂️ TheMob ✦ Advanced Custom Mobs & Bosses
Mob Framework | YAML | Boss Phases | Radar HUD | AutoSpawn | Player Stats | 1.21+
⭐ ProMB | ProMythicBoss
bosses, mob, mythicmobs, equipment, auto, timer, auto spawn
In the Journeys
The mods expand Minecraft further with new ores, mobs, biomes, dungeons, bosses, and magic to discover.
Trails of Forsaken Lands
Adventures, a lot of bosses, and crystals!
UHC+
A data pack that adds in UHC, but with additional features like augments, special items/equipment, and bosses that spawn in during the game.
bt stipram kokam
There's another world and a boss. There are enemies. Beauty. Everything is there. There are all kinds of furnaces. There are world settings. There are tools for armor and food.
Gnomeland
Gnomes with different types such as bosses and guards and structures.

LootShare
Tired of divvying up loot after bossfights?
Corrupted Horizons
Add Mini-Bosses! Increase Difficulty, Earn Rewards And Begin Your Adventure! 🧭⚔️
Frosty Day
New mobs, structure, boss and other cold stuff! ❄️
The Upturned - Fat Pajama Man
Adds the Fat Pajama Man from The Upturned as a rare minboss
BossesChaos
Wield legendary weapons and challenge unique, powerful bosses hidden across the world. Defeat the chaos, survive deadly mechanics, and claim epic rewards!
Garfield Mod
Adds Garfield as a hungry, whining boss fight – beat him and claim your well-earned lasagna!
Poke card
This Projekt adds an poke Card with that you can capture and release Mobs anywhere. But not endbosses.
Chaosium
This mod is a new adventure for the player who will be able to face bigger enemy capable of killing them in a snap, this mod allows you to get new item, armor and block. Once well equipped and prepared the player can go to challenge the bosses
The All Powerful Ender Chicken
Minecraft's hardest boss!
Villager BOSS MOD
Defeat the Crazy Villager BOSS!
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.
Yarlan
Yarlan is a 16× RPG resource pack for servers: cohesive weapons & armor, custom mob/BOSS visuals, accessories, crops, and skill icons/UI. Activates on mc.aelris.cn (Java 1.21.1). First load may take a few minutes.
Boogers & Snot
This minecraft mod gives you the ability to pick your nose, go to a new dimension, and even beat a boss!
Experiency Bosses
Experiency Bosses is a datapack that brings forth four legendary foes, each bearing unique treasures—from the Axolotl lurking in the ocean’s depths to the Wither Skeleton King, crowned in shadow.
MagicAirdrops
Replace boring airdrops with new events with various rewards and bosses.
7 Deadly Sins : Reworked
A feature-rich Paper 1.21.1 plugin introducing 70 custom enchantments, raid bosses, progression systems, and party-based gameplay inspired by the Seven Deadly Sins.
BossRewards
Reward top damage dealers in MythicMobs boss fights!
KLAUS
simple mod that adds an evil santa klaus bossfigh
Nether chambers
Adds custom trial chambers, mace, boss and items to the nether
Godmode- wither rework
This mod entirely reworks the wither boss in minecraft, with custom loot, moveset, etc
Worlds O' Plenty II
A new & updated curated modpack featuring all sorts of experiences!: - Adventure! - Decorations! - Bosses and Mobs a plenty! And of course... *drum rolls* Plenty of Worlds to explore! - Updated to 1.21.1 Neoforge!
UltraRituals-Free
Offering altar system to summon bosses, free version
Rocks & Monsters
A modpack which aims to weave boss fights with pokémon battles seamlessly. Features revamped nether and end progression!
EnchantedBosses [Free]
An endlessly customisable bosses plugin using SkillsLibrary
Chill&Stay
This is a modpack for my private smp, includes new building blocks, new foods, mobs some new bosses and enemys, a lot of QoL features, and the necessery optimanizations
Warden Fight: Reimagined
A vanilla-like overhaul of the warden boss fight
Warden Bar
Adds a boss bar to the Warden.
Elder Guardian Enhanced
Experience a cinematic multi phase Elder Guardian boss fight designed to feel like an official Minecraft update
MythicKorra - Advanced ProjectKorra & MythicMobs Integration Addon
Expand your MythicMobs bosses with element-based mechanics, statuses, conditions and more!