Mods for Minecraft Java
Browse 1,313 free mods for Minecraft Java — popular picks include FM: All in one, ChaostheWither's The Void Dimension, Simple Vanilla Upgrades: The Non-Happening Update.
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FM: All in one
adds many new bosses, mobs, and weapons
ChaostheWither's The Void Dimension
A mod that adds a void-style dimension, boss, and tool set.
Simple Vanilla Upgrades: The Non-Happening Update
A nifty mod that adds some new vanilla friendly recipes, items and even bosses.
Abyssbound
a mod that adds new biomes, mobs, bosses and structures based of the void
More Bosses Mod
Adds awesome new Bosses
The King and The Queen - Echoes of Utopia
A high-performance revival of the iconic The King and The Queen bosses from Orespawn. Optimized for 1.12.2 with a ground-up engine rewrite and legacy 1.7.10 authenticity.
Sea Core Balance & Utilities
A balance and utility addon for Mine Mine no Mi and CartAddon, focused on cleaner PvP, reworked abilities, improved fruit terrain effects, bosses, crates, and server-friendly config tools.
Guardian's Mod
This mod adds Bosses to fight and new weapons
Ivar's Bosses
Ivar's Bosses is a mod that introduces formidable bosses to the game, featuring unique attack patterns and special summoning rituals. These ancient creatures will unleash their wrath upon anyone who dares disturb their eternal slumber.
Morbid Reborn Reborn Reborn
This Mod recreates The Morbid Harvester Boss from the old mod "Mob Fusion", Plus its Drop the "Morbid Harvester Arm"
THE SHREKK
in this mod you can find a passive boss called shrek.
Majestic Menaces
Adds powerful bosses
motojuster732's New Bosses [Discontinued]
A mod that adds non-vanilla friendly bosses to make the game more hard and challeging
Very Magical Orbs
Adds in Magic Orbs, Difficult Bosses, and Armor and Weapons. The Orbs all give different Abilities to the player.
Palamobs [ Discontinued ]
An add-on for Palamod Recreated and Custom NPC. The different mobs will finally be able to burst into your adventures with their different dungeon styles, bosses, and NPCs.
arion mod
a mod that adds new dimensions items biomes and more but manily bosses
E_Kedi's Garfield Boss Fight
its a mod adding garfield boss fight
DungeonRPG
Diablo-style dungeon crawler for Minecraft. Delve 7 themed dungeons, battle scaling bosses, and hunt randomized loot across 5 rarity tiers, 65 unique items, full leveling from 1–100, and a Salvage Station to scrap, repair, and recycle gear.
BLACKSOULS II
A hardcore dark-fantasy RPG mod with custom stats, skills, bosses, souls, weapons, accessories, and brutal combat mechanics.
Depths and Ores
Depths and Ores adds many new ores, items, armor, weapons, blocks, mobs, bosses and so much more! This mod was made using Mc Creator
Blobby Mod
Add’s a new biome in the void dimension. It also gives you a new Boss in swamps.
Conquer & Evolve - restored
A mod that adds new content: items, creatures, bosses, weapons, structures, mechanics, and battles
Dino Rumble
A very expansive and quality dino mod adding food items bosses and more!
Twilight Forest: Finale
Add bosses and weapons for twilight forest
The Epic Player Boss
Adds a new player like NPC boss which will give you an epic boss fight.
Ripple of the Past
Added a boss "Cyrene"
Virtuso's Grand Battle
Adds an illager boss to the later stages of raids
B'things
B'things adds new animals, hostile mobs, a powerful boss, unique armor sets, special weapons, custom enchantments, progression through the Thingsopedia, and late-game lore content.
Kings & Monsters
An adventure and progression mod featuring the Ogre Tribe, guarded outposts, escalating patrols, powerful relics, a massive fort, and a multi-stage boss fight.
Lava Chicken Boss
Adds a new boss and an exciting battle with him, as well as his minions and some items.

PlasmaMod (UNMAINTAINED)
A fabric mod that adds a full set of new tools and mobs including a boss that is all plasma themed.
Headaches!
Headaches! is a Minecraft mod that adds new structures inhabited by the most absurd and unconventional mini-bosses—all characterized by having disproportionately large heads. Discover a challenging new adventure!
Nightlancer
Adds an ominous boss on horseback
Electric Boogaloo
Adds a new zombie dancing boss, Electric Boogaloo with his iconic Backup Dancers from the Plants Versus Zombies Games
Bronify
Adds A Lebron Boss to Minecraft
Monsters Unlimited
A challenging Minecraft mod featuring boss monsters! Starting from day ten, a powerful boss monster will appear in your world every five days.