Horror Mods for Minecraft Java
Browse 264 free Horror mods for Minecraft Java — popular picks include Arthropod Phobia Expansions + Horror Bosses (Spiders, Arachnophobia), Pumpkillager's Quest, Guard Illagers.
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Arthropod Phobia Expansions + Horror Bosses (Spiders, Arachnophobia)
ArPhEx: Intricate, phobia-inducing, realistic mobs, and supernatural bosses
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!
Guard Illagers
Evil Guards That Aren't afraid to show who's boss!
Arthropod Phobia Expansions + Horror Bosses / Arachnophobia
ArPhEx horror mod - realistic, intricate, phobia-inducing entities and supernatural bosses
Spankster's Horror Craft
Add's in Lore based bosses, like Slenderman, Jeff the Killer, Sirenhead, and Bigfoot!
Withering Heights: Revamped Wither
Turning the Wither into something worth calling a boss.
The Nexus (Deep Dark Dimension)
The scary dimension behind the portal! New final boss!
Cursed Fate: Cursed Tweaks (New Boss Fights!) CursedFate Addon
A Minecraft Mod Based On The Jujutsu Kaisen Cursed Fate Mod!
Arda's Sculks (Ancient City Portal / Deep Dark Dimension)
Arda's Sculks mod is a mod that improves the ancient city in the game and offers the ability to open the ancient portal in the ancient city. This mod adds many deep dark biomes to the game and many boss creatures found in these biomes.
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?
Insomnia: Hardcore | Origins, Bosses, Skills
The modpack for the sleepless. A challenging RPG adventure with a focus on limited lives, skill trees and dimension based difficulty!
Better Horror (BH)
This is a mod that adds bosses, items and some lore to the game. By: Koner
Fearborne - Horror RPG Adventure
Horror themed RPG with many dungeons, bosses, skill trees, and many more!
The Day Of The Beast
Introduces The Devil, a new boss fight in the game.
Mine Piece World
This modpack creates a battle arena for **One Piece** characters, featuring unique abilities, Devil Fruits, Haki, and iconic locations. Players can engage in PvP and team battles, with multiplayer and AI boss challenges included.
CWSM Enhanced Boss Bars
Cracker's Witherstorm mod Enhanced bossbars for Withered Symbiont and Command Block
JJK Extra Cursed Fate
Become the most powerful sorcerer and kill all the bosses!

Cursed Fate: Cursed Tweaks (New Boss Fights!)
This is an Add-On for the Minecraft mod Jujutsu Kaisen Cursed Fate Mod! This mod is solely an extension for the original mod by ImNotHURAGAN and does not work independently.
Invincible: Overdrive
A Modpack base on the comic and TV show "Invincible", focusing on the mod "Invincible Conquest", bringing in challenging adventure with difficult mobs and bosses to conquer
Vaults of Abandon
Conquer the Vault, in the Vaults of Abandon - Dungeon Datapack. Battle Epic Bosses, Explore vast dungeons, and utilize powerful magic. Access over 50+ Custom Items, and battle over 20+ Custom Mobs.
Cursed Fate Boss Buff
an addon to "Jujutsu Kaisen Cursed Fate" designed to buff the bosses from the mod
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.
Moar Bosses
Moar Bosses adds 7 types of randomly spawning bosses into your Minecraft world. Each boss has 3-5 unique and crazy magical attacks, and drop cores that can be used to craft magic wands. The bosses have custom textures using Optifine or Reselect or CET.
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.
Nasir's Null Boss
Adds a new horrifying foe to your game...
Titans
This mod is made for those who love adventures. Adds new ore, materials, items, structures, and a boss
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.
Sun Screamer Horror
Sun Screamer Mod adds a flying, stalking boss with creepy explosions and eerie behavior, creating a haunting challenge for players seeking a thrilling and intense Minecraft experience.
Wither Ascension
Makes the Wither boss harder with phases and abilities
Hollow Steve [HORROR]
Adds Hollow Steve, a horror stalker boss that haunts you, grows stronger after each defeat, and must be killed 10 times to survive.
Boss AI Tweaks
Mob AI Tweaks but only the boss changes
Configurable Boss Bars
A simple mod allowing for the configuration & stacking of boss healthbars

Sporeadds
Mod that adds 4 survivors origins and 1 boss origin based of an infected from the spore mod
Sirenhead: Legacy
Added siren head and cartoon cat [Bosses]
Scary Monsters and Nice Weapons
A mod that adds weapons, bosses, and a working XP Stats system