Mods for Minecraft Java
Browse 3,200 free mods for Minecraft Java — popular picks include The Siren Dweller, not_alone.jar, Siren Head: The Dangerous (Bedrock style for Java).
Step by step: How to install Minecraft Java mods & modpacks
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The Siren Dweller
This mod adds a siren head entity but gray... and dont get closer to it or either itll crawl after you...
not_alone.jar
This is a horror mod that adds entities to your world
Siren Head: The Dangerous (Bedrock style for Java)
Inspired by the popular Siren Head add-ons on MC Bedrock.
Bean Planet
a MOD that adds new ore,new friends , new weapons and new secrets
Herobrine Horror Project
The best Minecraft horror plugin for 1.21.4 Spigot that lets you troll your friends or create a YouTube video with scary ambience sounds and horror effects.
SrPollo Dweller
This mod adds a monster to your world that appears on night or caves
Noches Muertas
A progressive zombie survival mod where every night becomes more dangerous, with evolving infected, hordes, blood moon events, weapons, research, defenses, survivors, structures, and infected Nether progression.
Rare OP Mobs
Rare overpowered mob spawns with random enchants and potion effects that are beyond vanilla limits.
Evil bandits
Small mod that adds bandits to the game.
Felix's rats
A mod that adds some cute little monsters :)

Eat Absolutely Everything
Eat everything, and experience their custom effects!
Nightmares.jar
A horror mod inspired by wonderland.jar that adds 2 new entities and 4 new dimensions.
INTRUDER - The Correction
An horror mod where you are not supose to be here , YOU are the anomaly
BalazsScaryHerobrine
Adds Herobrine to Minecraft with scary events and encounters.
Better Cave Dweller Delight
I didn't feel that The Cave Dweller added enough and most Dweller mods felt incomplete. So I decided to add some loot drops. There was another version but it was trolled and broke your game so I made my own
Deadrock Enderman
Deadrock Enderman: Beneath the caves, a bedrock-clad entity stirs. It watches, unyielding and relentless. By the 20th day, it emerges, bringing endless night. You can't kill it. You can't escape it. Survive if you can—your fate is sealed.
Nightmare Green
A Reupload Of The Black Nightmare With Green Eyes.
Create: Rackets
Slap mobs with manufactured rackets!
The Dager
A mode of fear that blinds and chases
Sanity System
A subtle psychological horror mod that adds a hidden sanity system, immersive hallucinations, and fear-based survival mechanics to Minecraft 1.21.4 Fabric.
BloodMarks
Adds blood effects to your swords and a unique Blood Instinct status, attracting hostile mobs from a distance. Cleanse your weapons in water or face the challenge head-on.
CreepyPasta Legends (Java)
Creepy Monsters Awaken, Haunting Players With Dark legends and Fear.
Anatomy
A Horror Creature in the Dark...
CustomDisasters
Custom Disasters is a Paper plugin that adds dynamic world events like Blood Moons, Zombie Apocalypses, and Nether Breaches, each transforming gameplay with unique mob behavior and atmospheric world effects.
Cobblemon Torchmaster Fix
Allows Torchmaster to prevent Cobblemon from spawning in areas where it is not allowed to spawn.
Dead Inside [Horror]
This mod adds dead creatures..
MobPVP // CANCELLED
MobPVP transforms your Minecraft survival experience by assigning levels to every living creature in the game. Based on these levels, mobs gain different abilities, attributes, and loot chances, creating a more challenging and rewarding combat system.
GolemBlood
From the ARG: Those Aren't Golems. [Forge]
The Lost Levels
The Lost Levels is a Backrooms-inspired horror and exploration mod that adds several liminal dimensions to Minecraft.

McDonalds Mod
Adds various items from the McDonalds menu.
Horror Him
A Horror Mod Based On An Armour Stand That Stalks...
Devil Monkey
Devil Monkey mod for fight
086.jar
the faceless steve. his world his commands
Psihosiz (horror)
A horror mod focused on psychological dread, paranoia, and atmosphere rather than cheap jump scares. Adds 5 unique creatures, new structures, and a sanity-based "Psychosis" mechanic that alters your perception of reality.
Ghosts (Unofficial Fabric Port)
Adds friendly spectral companions, seedling ghosts, Kodamas, and haunted forest features to Minecraft.
Cave Dweller NeoForged
Adds a horrifying monster, and some cave sounds to NeoForge 1.21.1