Minecraft Java 1.21 Mods
Browse 1,432 free mods for Minecraft Java 1.21 — popular picks include All Creepypasta in One, Pocket Mobs, A Minecraft Movie Mobs.
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All Creepypasta in One
All mystical versions, and ARG in one mod.

Pocket Mobs
Battle with mobs using Pokémon Showdown. Made for ModFest: Carnival.
A Minecraft Movie Mobs
Changes the appearance of some mobs to look like they're form the movie
ZombieApocalypseSSS
ZombieApocalypseSSS is a comprehensive Minecraft plugin that transforms your server into a thrilling zombie survival apocalypse. Featuring advanced zombie AI, evolving variants, player infection mechanics, psychological horror elements, and dynamic events
Home Lawn Security
A mod that aims to add Plants vs Zombies' versus mode to the game.
The Witch (Intense Horror)
The red eyed Witch lurks in the shadows, if you look at or get too close to her she strikes and drags you into complete darkness.

Warden bossfight
Turns a player into a boss with warden and sculk-based abilities
Classic Combined
This mod creates a Classic Minecraft/Modern Minecraft hybrid experience. Recreates modern features in a Classic Minecraft/Alpha Minecraft style. Fully Survival compatible
kill.jar
A horror mod that is based off The Broken Script
Cursed Spawners
Makes spawners far more dangerous than they need to be.
Villagers Drop Eggs
This datapack makes villagers and zombie villagers drop spawn eggs. It's great for transporting those mobs.
Haunted Encounters
Spooky Ghosts from the Pokemon Tower invade your world, bringing a whole new otherwordly challenge!
Immersive Pillagers
Face pillager hordes, explore hostile camps and lost labs, battle undead illagers, and uncover the secrets of the totem.
Death Sounds
the Mod that plays a sound on death of a player.
2.0 Rediscovered
A mod that implements the features of Minecraft 2.0, an April Fools joke released by Mojang on 2013
Creeper Deactivator
Do you hate creepers? Just deactivate them!
HappyDays
Explore the horrors that have entered the your system, and try to survive with them hunting you down like an animal.
Backrooms Through The Walls
Adds level 0, level 1, and the bacteria entity.
Horrorgames
Horrorgames – A spooky Minecraft modpack with mystic creatures, eerie events, and performance optimization for smooth, terrifying gameplay.
The Lost Server - The Broken Script
A challenging horror modpack that slowly tears apart your world and corrupt the moon as dangerous creatures watch your every move watching and waiting to corrupt your world. [LORE BASED MODPACK]
Minecraft But a Mob Spawns Every 10 Seconds
Minecraft, but a random mob will spawn on top of you every 10 seconds, good luck.

PickMeUp
Pick Up Entities and carry them somewhere
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.
Herobrine Addon
adds Herobrine and his signs
PySpigot
A Python scripting engine (plugin) for Minecraft servers running Bukkit or one of its forks (Spigot, Paper, etc.).
FNAF Dreams and Nightmares (Work Game)
Mod will recreate the creepy atmosphere of FNaF 4
Random+Multiplied Items
Every block you mine, or mob you kill drops a random item which is also randomly multiplied from 1 to 1024 of it

Geodrum
Geodrum is Scary! Geodrum is Nightmare!
Chain Reaction Creepers
This mod makes creepers explode when they take damage from another explosion.
Dirt Conduit
Removes the Prismarine Block restriction from conduits
Epic The Mod
A Minecraft Mod based on Epic: The Musical by Jorge Rivera-Herrans
the broken script two
The Broken Script Two is a dark adventure mod for Minecraft 1.21 that shatters our very perception of the world. You play as the Scriptbreaker, a wanderer with the power to alter the code of reality. Experience stories intertwined with nightmares.
Mob Mounter
Ride any mob using just a saddle!
Dinnerbone Gravity [Dinnerbone Floats]
The mobs named "Dinnerbone" fall upwards because they're upside down.
Jeck230NOTREALWORLD
AI-generated horror mod that adds the mysterious entity Jeck230, disturbing sounds, and a strange “not real world” atmosphere.
Ceruledge Knight Addon [Cobblemon]
An add-on that adds a Ceruledge in the form of Roaring Knight (by deltarune) to Cobblemon.