Fabric Mods for Minecraft Java
Browse 39 free Fabric mods for Minecraft Java — popular picks include Ender Dragon Fight Remastered, Withering Heights: Revamped Wither, Nice Mobs Remastered.
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Ender Dragon Fight Remastered
A difficulty increase of Minecraft's final boss, with a focus on a somewhat Vanilla feel.
Withering Heights: Revamped Wither
Turning the Wither into something worth calling a boss.
Nice Mobs Remastered
Randomised mob equipment, 10 new mobs, 3 new bosses, a new late game dimension and more
Brutal Nightmare : Insane Difficult
Minecraft too easy? Try this mods with nearly 40 modifiers - settings new mini bosses, which made minecraft become hard & insane. Enhanced hostile mobs' AI & Angry passive mob. Zombie place/break blocks. Skeleton,Spider,Creeper,Enderman.
Boss Ultimatum
Heal bosses when players die, or remove them!
The Twilight Forest: Re26
Unofficial port of Twilight Forest from Minecraft 1.21.1 to Minecraft 26.1.x and 26.2.x, adapting the mod's dimension, biomes, structures, bosses, items, and mechanics to the latest Minecraft version for modern gameplay.
Bossbar
Create health bars for bosses or entities: easy, performance-friendly, feature-rich.
Nightmare Mode [BTW ADDON]
Nightmare Mode is an addon for Better Than Wolves CE 3.X that makes the mod a LOT harder, with focus on extreme difficulty, unforgiving mobs and reducing farming tedium. NM features new mobs, reworked mechanics and boss overhauls.
Piglin Wither
Adds a new piglin wither boss
DAG Mod
Race & class system, 200-level progression, custom dungeons, boss battles, two custom dimensions, NPC quests, party play, and craftable consumables with real combat effects. Everything in one mod.
Wands & Wizardry
Bringing Noita's spell system to Minecraft with fully modular wands, over 60 spells, a new boss fight and more!
[WIP] DragonFist Legacy
(INCOMPLETE and WIP) Adds martial artists to Epic Fight, along with new content, structures, and mini-bosses throughout the world.
Bossmode
Bossmode is the difficulty above hardcore that turns every mob into a boss fight, including passive mobs. Can you survive?
BLACKSOULS II
A hardcore dark-fantasy RPG mod with custom stats, skills, bosses, souls, weapons, accessories, and brutal combat mechanics.
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.
koper_mod
A chaotic Minecraft mod with unique bosses, broken armor sets, and a corrupted dimension a little unbalanced but fun as hell.
ZApocalypse
ZApocalypse is a Fabric mod for 1.21.1 that turns every night into a zombie wave, with elite variants, blood nights, and a Zombie Lord boss. As the apocalypse escalates, zombies evolve unique abilities while other hostile mobs retreat deep below Y=25.
World's Whisper
Conquer shape-shifting bosses and craft elemental gear in a realm ruled by four mystical seasons.

LootShare
Tired of divvying up loot after bossfights?
Robot Legion
Build a steampunk robot army. Workers automate jobs while combatants fight beside you through three boss dungeons. Trade with engineer villagers for rare parts.
Summoners
Turns ordinary mobs into mini-bosses that summon reinforcements.
The Umbral Eye / 虚空の蝕王オクルス
A floating, void-themed endgame boss summoned by ritual. The Umbral Eye fights across three telegraphed phases — tuned so that even full netherite, a beacon, and golden apples make for only a knife's-edge win. 祭壇の儀式で召喚する浮遊ボス「虚空の蝕王オクルス」を追加。予兆付きの3段階で戦う
Project: TitanSlayer
Slaughter Mobs and Bosses in a Doom Style
blazeQOL
Minecraft mod for Hypixel Skyblock which features QOL for Blaze Slayer giving you a HUD with general information about the current boss.
Growth Mobs
Growth Mobs adds powerful growth stages to Minecraft mobs, transforming ordinary enemies into massive bosses with unique abilities, custom boss bars, devastating attacks, and enormous health pools. Progress through new gear tiers.
Passive Boss Bars
This is a lightweight, server-side mod for modpack creators that allows you to make boss bars only appear when a boss is aggro. The mod "Mob Boss Bars" is required for this to work.
Yori3o's Trash 'n Brainrot
Stinking trash cans, 5G towers, a new boss - everything you needed

Skillbound-RPG
Skillbound transforms Minecraft into a classic RPG with level-based skills, improved combat progression, magic, prayers, Slayer tasks, bosses, new equipment, and rewarding unlocks as you advance from levels 1–99.
Zombieium
Zombieium adds configurable night-time zombie waves and an optional boss encounter with a red warning beam, fiery arrival effects, and unique drops.
Boivindo
A gaunt bovine humanoid that doesn't hunt you, it grades you. It picks the best-fed player, always knows where you are, never runs, and cannot be killed. No boss bar, no chase music.
BossHeart
A mode that makes playing more comfortable
Hell Guardian
This mod for Fabric 1.20.4 adds a custom new end-game bossfight: The Hell Guardian🔥
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!

randomitems-mod
Adds /randomitems, /randommobs, /randomweapon, /randomarmor, /randomtool and /randomquest commands that periodically give random items, spawn random mobs, swap your gear, or assign 5-minute random quests with a boss bar and personal sidebar.
Mob AI Tweaks Mod (26.2, 1.20.1) – From Sniffers To Skeletons
Mob AI Tweaks Mod transforms Minecraft’s mob behavior, boss mechanics, and combat dynamics into something far more intelligent and challenging. Features: Wither and Ender Dragon Reworks: Multi-phase combat, enraged states, smarter healing, new visuals, and combat patterns. Elder Guardian Bossified: Beams, dashes, oxygen-draining mines, boss bar, and more. Mini-Bosses: Ravagers, skeleton horsemen, and enhanced Illagers. […]
Snorlax Boss
Adds Snorlax as new Endboss to minecraft