Minecraft Java 1.21 Mods
Browse 1,195 free mods for Minecraft Java 1.21 — popular picks include SimpleGPS, FluffyTeam | Powerful Guilds & Team Boss Battles [1.21 – 1.21.10], Nex-tpa.
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SimpleGPS
Advanced GPS navigation with interactive GUI menus, realtime Bossbar/Actionbar tracking, visual destination particles, Economy integration, permission limits, and SQLite support.
FluffyTeam | Powerful Guilds & Team Boss Battles [1.21 – 1.21.10]
Create guilds, grow your team, and fight powerful bosses together in epic team-based battles.
Nex-tpa
Lightweight teleportation and homes mod — /tpa, /sethome, AFK protection, and bossbar feedback for everything.
Sauling of Ascension
A wacky mod that turns minecraft into a boss and tech based progression game!
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
BossBarTools
A simple and configurable Fabric mod for Minecraft that allows you to hide boss bars completely or toggle their visibility on demand
Legends Awoken
Legends Awoken throws you into a world where forgotten myths awaken and ancient powers reshape the land. Magic flows through every corner, mysterious structures rise from the earth, and terrifying bosses guard treasures beyond imagination.
Adimenssion
All dimenssions in one, explore worlds, defeat bosses, improve your skills. Adimenssions is a modpack for simple and fun gameplay. Available in 1.21.1!
The Mewoster
A cool battle fight in an arena between you... and The Mewoster - a Mysticat Boss made in 3 days :D
Warden Bar
Adds a boss bar to the Warden.
Garfield Mod
Adds Garfield as a hungry, whining boss fight – beat him and claim your well-earned lasagna!
Boss Warps {Data Pack}
A lengthy escapade and a fierce scrimmage, followed by an effortless return home. Based on the Boss Rifts mod by jodlodi, but for the Fabric/Quilt-savvy users!
MythicKorra - Advanced ProjectKorra & MythicMobs Integration Addon
Expand your MythicMobs bosses with element-based mechanics, statuses, conditions and more!
dungeoncraft-r
DungeonCraft is a modpack that brings the Minecraft Dungeons experience into Minecraft with new camera, dungeons, animations, and bosses.
Icy's Vanilla 2
Modpack focused on enhancing all aspects of vanilla Minecraft with a focus on exploring structures and boss fights.
GiantZombie
summon and battle a colossal zombie boss with customizable stats and drops!
Custom PvP Items + Boss
Adds ten customizable PvP related item abilities and one customizable boss with multiple attacks.

Pantheon Adventure
Thirteen god bosses, each enthroned in their own hand-built temple dimension. Complete the trials, forge the divine keys, open the gates — and bring Olympus down, one throne at a time.
SmartRestart
Schedule server restarts and stops with a single command — every player sees a live countdown BossBar in exact minutes and seconds with dynamic color warnings and sounds.
Boogers & Snot
This minecraft mod gives you the ability to pick your nose, go to a new dimension, and even beat a 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.
Zoglin Miniboss
Makes the Zoglin into a miniboss with a powerful reward.
just hotbar and xp visible datapack
Player Health, Armor and Hunger bossbar Datapack
Fables: Bosses
Changes the models of every boss in minecraft (Currently only includes the wither)
Sleep Vote
Sleep Vote adds a configurable multiplayer night skip voting system to Minecraft, letting all players vote to skip the night with interactive chat buttons, boss bar feedback, and optional automatic night votes.
Godmode- wither rework
This mod entirely reworks the wither boss in minecraft, with custom loot, moveset, etc
WildFrontierr
WildFrontier is a wilderness survival & RPG adventure modpack for Fabric 1.21.1. Explore stunning terrain, battle bosses, level up your skills, and thrive in a dangerous world solo or with friends.
EssenceBound
Adds 4 new bosses with special items and a crafting levelling system for 2 of them :)
BQ BossBars
Lightweight addon to Beauty Quests plugin that let's you use bossbars for your quests
Project: TitanSlayer
Slaughter Mobs and Bosses in a Doom Style
xBossBars - Animated Bossbars
Bring Your Minecraft Server to Life with Animated, Customizable Bossbars
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
Rubens Better Survival
Overhauls Minecraft to a better Game! This Modpack overhauls the Visuals, improves Gameplay and adds new Structures and bosses!
CaseOh Bossfight
Lets you turn into CaseOh
Mid Optimized Plus+
it's Mid Optimized but with extra mods adding new bosses , mobs , biomes and more..