Minecraft Java 1.21 Mods
Browse 262 free mods for Minecraft Java 1.21 — popular picks include Inferno World, Brian's Boss Items, WarFmod.
Updated daily
Inferno World
Dimension, epic boss battle, and tools inspired by a magical hell
Brian's Boss Items
Plugins that adds custom Boss Items
WarFmod
A mod that adds new mobs and bosses to your world, as well as new features and items.
ADKM
Defeat a powerful, giant boss roaming your world to claim his legendary Scythe with +16 Attack Damage! A high-risk, high-reward challenge. (Requires GeckoLib)
Sculk Wrath
Sculk Wrath is a complete Warden boss overhaul datapack that transforms the Warden into a 4-phase boss fight with custom attacks, boss bar, music, configurable drops, and dramatic animations.
DreadWalker
A mod adding a new boss, new weapons, tools, armor, and a magic staff.
Artifacts and Bosses
This mod adds new gems that can be collected from 4 new bosses
Accurate Craft
A performance-focused Minecraft modpack featuring enhanced visuals, quality-of-life improvements, new structures, epic boss fights, and expanded building possibilities.
Nation's Roots
Nation's Roots - a mod where you choose one of 4 Races with unique Nations. Your choice grants powers and flaws. Find a Star to change your Nation and defeat a race boss to claim their legendary weapon. Your roots define your power.
Raijin's Wrath
Unleash the wrath of Raijin — a Fabric adventure of thunder-forged gear, lightning-touched foes, summonable bosses, sacred shrines, and an in-game compendium guiding your ascent.
Antique Odyssey
A progression-focused adventure modpack where ancient magic, powerful relics and mechanical engineering shape your journey. Explore a world filled with dangerous bosses, forgotten ruins, powerful spells and intricate machinery.
Bosses Reimagined
This is release of Bosses Reimagined. It is release but ,if you have any bugs you can message me.
AETO's
A modpack focused on exploration and automation using Create: Aeronautics, also featuring magic and many bosses!
Creations Of Tygrys
Mod made for fun, adding new boss, dimension and structures!
Cake Tower HUD Plus
HUD overhaul and optional server-side combat stats for the Cake Team Towers · Chapter 3 map—health, hearts, resources, team/mob 3D bars, stats panel, boss-bar toggles; v6+ damage attribution, K/A/D taken, DPS, session history. Auto-hides elsewhere.
BossySky
Polish Author's Boss Plugin for your Minecraft server!
ryoumod
Get ready for the ultimate journey! ⚔️ This modpack combines an epic RPG experience with brutal challenges: face colossal bosses 👹 and explore completely remastered Nether and End dimensions that will blow your mind 🌌. If you’re into tech, master advance
Anti Magick: Bosses of Mass Destruction
Optional Anti Magick integration that suppresses selected supernatural boss actions and summons
Trick Quiver
An archery combat mod: switch between 12 magic arrows, craft bow attachments, battle clockwork archers, and raid a Japanese-style boss shrine. One arrow solves everything.
The Legend Returns
Herobrine has returned. Cursed structures, shadow clones, epic boss fight, and dark portals await. Survive the apocalypse.
Attack Mastery
Grindy attack skill progression! Kill levelled mobs to level up your Attack Mastery (max 200), gaining up to +1000% damage. Bossbar tracks XP — perfect for RPG servers with Levelled Mobs!
Anti Magick: The Twilight Forest
Optional Anti Magick integration that suppresses Twilight Forest portals, magic abilities, summons, and selected boss actions
HARD NEW
A technologically advanced game with a focus on realism! Shaders, automation, smart NPCs, hundreds of animals, and hardcore bosses. Explore this vibrant world with your friends using the built-in voice chat.
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!
NxControl
NxControl is an advanced staff plugin that lets OP players control players or mobs using simple keybinds, with GUI, bossbars, and freeze system built-in. It’s lightweight, powerful, and perfect for moderation, trolling, or cinematic gameplay.
Chariz's Mayhem
A Minecraft Mod That Aims To Add Fun Things Into Minecraft, Such As New Mobs, Bosses, Weapons, Tools, Armor etc. Created By The Maniac Himself, DarkChariz
SuperGem
Add a new ore, new capacities, new miniboss
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.
Endless Instability
This mod changes many stages of Minecraft, adding new blocks, tools, and bosses. It's not yet finished and is in early development. It's 70% translated into English and 100% into Russian.
AzurealDamaGE
This plugin displays a player's damage and health information in the boss bar when you hit them on PvP servers. It only has one version and is compatible with Paper version 1.21, but you should download and try it anyway.
Endmode 2 | Terraria Style Datapack
Terraria inspired overhaul to progression. New bosses, items, etc.
Calamity Bosses
20 NEW bosses that will shift the power changes in your world, adding custom item rewards and custom blessings to ease your fare through this treacherous world.
Kult Craft Core Data Pack (1.21.1, 1.20.1) – Fight Custom Bosses Without a Long
Kult Craft Core Data Pack extends the Attribute Setter Mod by balancing health and damage numbers for several other mods. The pack lowers the health of specific boss-like monsters so they do not take forever to defeat in regular survival gameplay. Features: Changes the health stats for specific creatures from different mods so they fit […]
Spell Utils Mod (1.21.1) – Library for Iron's Spells and Spellbooks Addons
Spell Utils Mod is a utility API designed to help developers create addons for Iron's Spells and Spellbooks Mod. It provides ready-to-use systems, classes, and tools that simplify the process of building custom spells, mobs, and bosses. This mod is mainly intended for mod developers, not regular players. Features: Mob & Boss Systems Custom spellcasting […]
Luminous Halloween Mod (1.21.1, 1.20.1) – Halloween Boss and Moon Magic
Luminous Halloween Mod is a spooky-themed Minecraft mod that adds a special boss event and themed items for a Halloween-style adventure. The mod focuses on a pumpkin-based boss, new crafting materials, and unique rewards. Features: New Boss Adds a Halloween boss called the Horseless Headsman Summoned by building a special structure Designed as a challenging […]
TNP Limitless 8 Modpack (1.21.1) – Endless Modded Journey Begins
TNP Limitless 8 Modpack is a large Minecraft modpack that combines technology, magic, exploration, quests, and automation into one complete experience. It is designed for players who want long-term progression and many different playstyles. Features: Core Overview Over 750+ mods About 2200+ quests across many chapters Focus on tech, magic, building, exploration, and boss fights […]