Minecraft Java 1.21 Mods
Browse 515 free mods for Minecraft Java 1.21 — popular picks include Chariz's Mayhem, Voidshard_abyss, Boss Weapons Mod.
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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
Voidshard_abyss
The Voidshard abyss mod adds the voidshard abyss dimension, bosses and arena battles.
Boss Weapons Mod
This is my first mod, so it's probably not very good. It adds some weapons for each mob that is generally considered a boss (Wither, Ender Dragon, Warden, and Elder Guardian).
Daniels Amazing Uranium Mod
This mod adds uranium, a boss named Daniel, and MUCH MUCH more! enjoy :-)
Empowered Armory
This mods adds addition weapons, items, weapons, tools, blocks, bosses and armor
Custom Entity API
A datapack API allowing anyone to add custom entities, or bosses, to Minecraft: Java Edition, powered by Animated Java.
Tenebris - Advanced Dungeon System
Free advanced dungeon system with bosses, keys, rewards, stats, MythicMobs and PlaceholderAPI suppor
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.
Everything Bossbar UW add-on
This Datapack adds Bossbars for every mob
The Invisible Cheater
There's a new boss in the world
MashStrikeDrops
The plugin is aimed at event servers, crates-style mob encounters, grind zones, boss-lite content, and custom reward systems without needing MythicMobs or a larger RPG stack.
Giant Boss
giant bossfight datapack using vanilla minecraft
Exto
This mod adds a unique horror mod boss that has a rare chance of spawning in the dark forest, the badlands etc.
Dragonfight Updated
This datapack is an improvement of the dragon fight. With a new mini-boss and even more.
Attrition
A world that answers your progress. 600+ mechanics: bleeding, thirst, curses, diseases, rebuilt bosses and a world that learns from every mob you kill.
Hyvora Combat Mobs
Custom Mobs • Abilities • Bosses • Rewards • RPG Combat
Hyvora Combat Mobs
Custom Mobs • Abilities • Bosses • Rewards • RPG Combat
Kione
Boss-style ability kit for a private SMP: homing skulls, a reflection shield, speed burst, auto-revive, summons and a server-side siege system. Abilities are bound to one account.
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.
Endmode 2 | Terraria Style Datapack
Terraria inspired overhaul to progression. New bosses, items, etc.
Tensura Craftables Data Pack (1.21.1) – Forge Rare Monster Drops
Tensura Craftables Data Pack adds useful crafting options for Tensura: Reincarnated and vanilla Minecraft. It gives you straightforward ways to make rare materials, armor pieces, and utility items directly at your crafting table. The pack also introduces fresh uses for elemental shards and boss drops so nothing in your inventory goes to waste. Features: Lets […]
Professor Porker's Legendary Dungeons Data Pack (1.21.1)
Professor Porker's Legendary Dungeons Data Pack extends Cobblemon with large challenge structures inspired by iconic creature landmarks. It fills your world with massive multi-floor ruins full of tough wild encounters and hidden puzzle chambers. Players must manage team health, solve environmental puzzles, and battle through monster rooms to reach high-level legendary bosses. The data pack […]
Passive Mobs Twlight Re Aggro Data Pack (1.21.11, 1.21.1)
Passive Mobs Twlight Re Aggro Data Pack fixes boss fights for the Passive Mobs mod. It forces creatures from the Twilight Forest to attack you again. This solves a problem where bosses like the Lich become impossible to beat when they stop fighting. Features: Forces all creatures and bosses in the Twilight Forest to attack […]
Dragoncraft Drygmy Blacklist Data Pack (1.21.1) – Earn Boss Loot Through Real
Dragoncraft Drygmy Blacklist Data Pack patches balance issues in the Dragoncraft modpack. It stops players from using Drygmy charms to easily farm certain powerful bosses and useful NPCs. By blocking these specific mobs, the game stays fair and challenging. You will have to fight big enemies the normal way instead of sitting back and collecting […]
Excalibur Bosses'rise Support Resource Pack (1.21.11, 1.20.1)
Excalibur Bosses'rise Support Resource Pack repaints the monsters and items from the Bosses'Rise mod. It changes the textures so they match the medieval fantasy style of the main Excalibur pack. Features: Medieval Monsters: Gives the five giant boss monsters a brand new fantasy look. Changes the textures of every new block from the boss mod […]
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 […]
Cataclysm Compat Data Pack (1.21.1, 1.20.1) – Giant Bosses Smash Through Custom
Cataclysm Compat Data Pack adds compatibility for L_Ender's Cataclysm. It makes the giant bosses and items from that mod work well with blocks and creatures from other popular add-ons. Bosses get the ability to smash through new types of blocks during fights. It also updates certain items so they stick properly when they hit targets. […]
BB's Bosses of Mass Destruction Tweaks Resource Pack (1.21.11, 1.20.1)
BB's Bosses of Mass Destruction Tweaks Resource Pack restyles the monsters and items in the Bosses of Mass Destruction mod. It changes the textures and 3D models of the big enemies so they look totally different. This pack gives the giant creatures a fresh coat of paint to fit a custom art style. Features: Updated […]
King of the Nether X Fresh Animations Resource Pack (1.21.8)
King of the Nether X Fresh Animations Resource Pack makes the King of the Nether pack work perfectly with Fresh Animations. It combines the scary new looks for the Wither and other fiery mobs with smooth, natural movements. Now, you get the detailed boss designs without any broken models when you play. Features: Fixes Visual […]
King of the Nether Resource Pack (1.21.8) – Dark Wither Army for the Underworld
King of the Nether Resource Pack transforms the look of monsters in the fiery dimension. It changes these creatures so they match the style of the Wither boss. This pack gives the underworld a darker and scarier vibe by making the mobs look like they belong to a single dark army. You will need OptiFine […]
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 […]
Neo The Titans Mod (1.21.4) – Discovering The Titan Gods of Minecraft
Neo The Titans Mod is a Minecraft mod that introduces powerful, genetically enhanced Titan bosses. It recreates the classic Titans concept while improving balance, performance, and compatibility with newer game mechanics. Features: Large Titan boss creatures with unique abilities and attacks. New equipment, tools, and ores related to Titan progression. Improved boss animations and smoother […]
Mini-Boss Boss Bars Mod (1.21.1, 1.20.1) – Stop Guessing Mini-Boss Health
Mini-Boss Boss Bars Mod adds health bars to tough enemies that usually hide their health. It works with base game mobs like the Warden and Elder Guardian, plus creatures from many other mods. You just need to hit the monster one time to make the bar show up on your screen. If you run more […]
Tax Warden Legend Mod (1.21.1, 1.20.1) – Warden Themed End Game Gear
The warden mob is a boss mob that protects Ancient Cities from external threats. But despite being a boss mob, killing the Warden does not reward the player much. Official remarks from Minecraft developers suggest that the Warden is a mob that is not supposed to be killed. The warden has a lot of health […]
Unusual End Mod (1.21.1, 1.20.1) – Endstone Golem Boss Fight
Unusual End Mod is a mod aimed at expanding the existing content in the End dimension without adding dozens of mineral resources that make no sense. With this premise, the mod adds coherent content to that dimension. With this mod installed, exploring the End dimension will reveal some new structures, new creatures, as well as […]
Mowzie's Mobs Mod (1.21.1, 1.20.1) – Slay Bosses for Their Gear
Mowzie's Mobs Mod adds a variety of fictional creatures to your Minecraft world, each with unique AI, smooth animations, and a rich atmosphere. This mod challenges you to face new bosses and enemies. If you defeat them, you can claim their magical abilities and powerful items for yourself. Get ready for exciting new battles against […]