Fabric Mods for Minecraft Java
Browse 27 free Fabric mods for Minecraft Java — popular picks include Pumpkillager's Quest, Withering Heights: Revamped Wither, Brutal Nightmare : Insane Difficult.
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Pumpkillager's Quest
🎃 SpookyJam 2022: Help out the Pumpkillager! With custom encounters, rewards and a boss fight you'll get immersed in the story. Spawn him by breaking a pumpkin in this spooky scary Halloween style mod!
Withering Heights: Revamped Wither
Turning the Wither into something worth calling a boss.
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.
Deadly Deadly Dungeon
Deadly Deadly Dungeon add new sprawling randomly generated dungeons with multiple levels of difficulty, loot and bosses. The datapack is ideal if you want an adventure or a real challenge. Can you beat the dungeon?
Gateway of Doom
Throw a Devil Eye to open a configurable combat gateway. Survive random or fixed waves, bosses and timed challenges for rewards—or suffer debuffs. Includes auto gateways, custom mobs, profiles, admin menus, commands, diagnostics, plus a stable add-on API.
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.
Strange Aeons: Sword and Sorcery
A dark-fantasy survival RPG where you become the monster—or hunt it—while earning power through cursed dimensions, ancient dungeons, and brutal bosses.
Piglin Wither
Adds a new piglin wither boss
DarkenDepths
A Mod extending the Deep Dark and creating a new biome adds a new boss and other cool items
Bossmode
Bossmode is the difficulty above hardcore that turns every mob into a boss fight, including passive mobs. Can you survive?
koper_mod
A chaotic Minecraft mod with unique bosses, broken armor sets, and a corrupted dimension a little unbalanced but fun as hell.
Kevosaurus Rex
Adds new boss - Kevosaurus Rex and Kevocitaptor, it's minion.
Homelantor
A Homelander boss addon for TerminatorStar featuring advanced AI, hunting behavior, and powerful combat abilities.
The Echo
A terrifying Fabric horror mod featuring system glitches, fake player activities, and sanity day progression. Escape a stalking entity in nightmare dimensions and stabilize the simulation by defeating the final boss, The Echo.
The All Powerful Ender Chicken
Minecraft's hardest boss!
online horror mod
this mod adds both momo and blue whale as boss mobs to Minecraft
Yori3o's Trash 'n Brainrot
Stinking trash cans, 5G towers, a new boss - everything you needed
Low Tier God
This mod adds Low Tier God into the game as a small boss you can fight.
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.
The Legend Returns
Herobrine has returned. Cursed structures, shadow clones, epic boss fight, and dark portals await. Survive the apocalypse.

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.
Formidulus Mod (1.21.1, 1.21) – New Boss, Weapons, Structures And More!
Formidulus Mod is a horror mod that introduces a new soul-like boss into the game. The mod also adds new weapons, blocks, mobs, and structures. The mod is continuous development and new features will be added over time. A list of features as noted by the developer is given below. Features: 1 Challenging Soulslike Boss […]
The Wandering Murderer Mod (1.21.5, 1.21.1) – Hidden Horror, Dark Humor, And Deadly Milk
The Wandering Murderer Mod introduces a sinister twist to an innocent Minecraft character: the wandering trader. Kill one, and you'll trigger the wrath of the Milkman Reborn, a disguised boss-level mob who will hunt you for two days before rewarding your survival with a powerful weapon, Milkman’s Sword. Features: Adds a hidden boss encounter triggered […]
Eldritch End Mod (1.20.1, 1.20) – Lovecraft’s Touch On The End
Eldritch End Mod expands the End with eerie new biomes, a corruption system, and terrifying creatures. Players can explore the barren Hasturian Wastes or the corrupted depths of the Primordial Abyss, each filled with unique hazards. Alongside new blocks, ores, and crafting materials, the mod introduces aberrations and bosses inspired by Lovecraftian horror, including Hastur, […]
Snorlax Boss
Adds Snorlax as new Endboss to minecraft
The Retch: Trauma's Echo
(NOTE - ON HOLD) The Retch is an adaptive psychological horror boss mod featuring relentless mob and strict anti-cheese mechanics. CONTENT WARNING: This mod features themes of severe psychological torment, trauma, and unyielding persecution from my youth.
Blood Toll Pistol
The Blood Toll Pistol is a cursed weapon that deals 1000 damage to mobs, less to bosses. Right-click to fire a magical bullet with effects. Each shot costs 5 hearts, 3s cooldown, 100-use durability.