Minecraft Java 1.21 Mods
Browse 80 free mods for Minecraft Java 1.21 — popular picks include Arthropod Phobia Expansions + Horror Bosses (Spiders, Arachnophobia), Sleep Tight, Pumpkillager's Quest.
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Arthropod Phobia Expansions + Horror Bosses (Spiders, Arachnophobia)
ArPhEx: Intricate, phobia-inducing, realistic mobs, and supernatural bosses
Sleep Tight
Sleep and bed overhaul / rework: hammocks, bedbugs, sleeping bags, nightmares, home bed comfort, and dream essence, fully customizable
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!
Cursed Realm: REVIVED
A new unsettling endgame dimension with challenging monsters for you to fight!
Zombie Nightmare Expansions - Undead Horror Monsters
Adds various creepy undead entities with unique mechanics and intricate designs
Ghost Villager
At night, a ghost villager may appear with exclusive trades...
The Ravenous
A mysterious and scary mob that will leave you no escape!
Gigeresque
Gigeresque is a horror-themed mod that offers players a dive into the horrific biomechanical world of the xenomorphs, and the mutated realms of the neomorphs, deacons, and goo mutants.
Him - Herobrine
we do a little trolling
Cult of Azazel
A mod that adds a mansion-like structure to Nether
Horrorland 2 - Psychological and Classic Horror Modpack (with Horror Quests)
A modpack only for the bravest, now updated to the latest version. With more terrifying mods and tons of evil creatures to discover!
Lost World - The Broken Script
A challenging Horror Modpack which slowly destroys your world while dangerous creatures are watching you
Happy ghast and ghast origins
Adds happy ghast and normal ghast origin to the origins mod
Schizo Cave Dweller [Forge, Fabric, NeoForge]
Cave Dweller in the eyes of a schizophrenic, strange and scary...
Sanity: Renewed
Brings the sanity mechanic from Don't Starve into Minecraft
Groth Mobs: Distorted Nightmares
Twisted and Dangerous Monsters style low-poly
PlayerProgress
PlayerProgress is a Minecraft datapack that introduces a leveling system. Earn UP from activities like mining and combat to level up and gain new abilities and rewards.
Mebahel's Skeleton Revival
When death is no longer the end… their skulls flee to rise again. Summon, hunt, or suffer — in Mebahel’s Skeleton Revival, every skeleton gets a second chance.
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
DokiMobs Chat
This ModPack combine Dokimobs with CreaturePals
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.
MobAwareness
A Minecraft mod that makes mobs more intelligent and reactive to players, light, and sound.
Zombie Hordes
These zombies WILL KILL YOU
Scary Herobrine From The Fog
This Mod Adds Herobrine From The Fog In Minecraft
Silent Caves
New cave horror mod concept with a camouflaging mob (WIP)
Arox's Favorite Mod
This mod adds just about anything, from cursed sandwiches to questionable dimensions.
All About Horror - Survival Fear & Terror Experience
Survive the terrifying world of the All About Horror modpack, where nightmares, horrific creatures, and dark environments await you at every turn.
Immortal Snail
This is a simple Minecraft mod that adds the mischievous immortal snail that will chase you for eternity with the goal of killing you permanently.
KinglyBosses
KinglyBosses is a Minecraft plugin for managing custom bosses. It allows summoning powerful bosses, generating custom items, and enabling player spectating. It also offers features like boss lists, spawn zone management, and easy configuration reloading.
Cursed Relics Dungeons
Cursed Relic Dungeons adds dangerous dungeons filled with secrets, traps, and hidden relic weapons with unique abilities. Explore hidden structures, discover powerful rewards, and survive deadly encounters.
Shadow of the Soul
Shadow of the Soul: A dynamic psychological horror mod. Features a Fear Level system that reacts to darkness, depths, and injuries. Includes adaptive AI that stalks you, auditory hallucinations, and environmental sabotage. Light is your only safety.
It Was My Mistake
Adds a scary entity that stalks and becomes stronger as time passes, also includes a jump scare. (Horror)
A DREAMCORE NIGHTMARE
I have made a modpack out of a dreamcore world! That gets rid of the mobs and I've added some terrifying horror mods into it! so you're not completely alone. Good luck!

Enter the Bungeon
Completely rewrites Minecraft into a Roguelike Dungeon Crawler
The Elementals - RPG
Master the power of the elements in this immersive RPG mod!
Player Immortality Mod
Become immortal and never go below 1 HP half a heart of health, except from void damage.