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Minecraft Java 1.21 Mods

Browse 617 free mods for Minecraft Java 1.21 — popular picks include Kappa's AntiCheat, Flatuence Update, Wither Loot.

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Kappa's AntiCheat
1.21.5fabric

Kappa's AntiCheat

A lightweight Fabric anti-cheat designed for high performance on large-scale servers.

1.5kdownloads
Flatuence Update
1.21.5fabric

Flatuence Update

Players and Mobs now have the ability to pass gas.

1.4kdownloads
Wither Loot
1.21.2

Wither Loot

Adds better custom loot dropped by the wither

1.4kdownloads
Sizeable Creeper
1.21.5

Sizeable Creeper

Just a datapack that spawn creeper at different size

1.4kdownloads
Deepcraft
1.21.4neoforge

Deepcraft

A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.

1.3kdownloads
Herobrine Mode
1.21.8neoforge

Herobrine Mode

Play as Herobrine and explore a cursed world

1.3kdownloads
Illagers Attack Babies
1.21fabric

Illagers Attack Babies

Illagers now attack baby villagers. Because why not.

1.3kdownloads
ForceField
1.8.8

ForceField

Push pesky players, mobs, and even blocks away from yourself!

1.3kdownloads
Infested Netherrack & End Stone
1.21.10fabric

Infested Netherrack & End Stone

INFESTED Netherrack & End Stone to End and Nether Dimensions with Spawn Mob System (Endermite and Blaze) (infected)

1.3kdownloads
HandsOfTheVoid.jar
1.21.8neoforge

HandsOfTheVoid.jar

Slow burn horror mod heavily inspired by the broken script that will make you feel like you're in an ARG

1.3kdownloads
Shearing Sheeps Drop op loot
1.21

Shearing Sheeps Drop op loot

Shear a sheep → get insane end-game loot. Works on every version from 1.21 to 1.21.10. Adds custom loot table, and turns sheep into walking OP supply crates. Perfect for chaos survival or challenge world

1.2kdownloads
Grave Robber
rd-132211fabric

Grave Robber

A classic take on the Gravestone Mod, adding a mini fight to retrieve your items.

1.2kdownloads
Ben's Monster Energy Mod
1.21.1neoforge

Ben's Monster Energy Mod

All the Monster Energy you could ever want... and Beer too for some reason.

1.2kdownloads
Herobrine Horror Project
1.21.4

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.

1.2kdownloads
tame every mob
1.21.4neoforge

tame every mob

Tame every regular Minecraft mob, control their behavior, store them in Mob Pockets, and upgrade them with custom equipment.

1.2kdownloads
not_alone.jar
1.21.8neoforge

not_alone.jar

This is a horror mod that adds entities to your world

1.2kdownloads
NoMoreJumpscares
1.20.2fabric

NoMoreJumpscares

Removes the Elder Guardian curse effect when receiving mining fatigue

1.2kdownloads
Configurable Difficulty
1.21.1fabric

Configurable Difficulty

A server-side Minecraft mod that adjusts entity attributes based on their biome, dimension, and depth

1.2kdownloads
The Mystery
1.21.8fabric

The Mystery

Survive chilling encounters with Herobrine, Entity 303, and Null. Balanced horror gameplay adds eerie tension without breaking vanilla mechanics.

1.2kdownloads
Mini Mobs
1.20

Mini Mobs

Adds new mini variant of mobs that spawn naturally.

1.2kdownloads
CustomDisasters
1.19

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.

1.1kdownloads
Sanity System
1.21.4fabric

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.

1.1kdownloads
BloodMarks
1.21.1fabric

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.

1.1kdownloads
1.21.7 Backport (Lava Chicken Backport)
1.21neoforge

1.21.7 Backport (Lava Chicken Backport)

Port of the new 1.21.7 features to older versions

1.1kdownloads
MobPVP // CANCELLED
1.21fabric

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.

1.1kdownloads
Eat Villagers
1.21.10fabric

Eat Villagers

Wandering Trader & Villagers drops meat and you cat eat it - new Food

1.0kdownloads
Bedrock Wither
1.16

Bedrock Wither

Adds Bedrock Withers to Minecraft?

1.0kdownloads
CreepyPasta Legends
1.21.1neoforge

CreepyPasta Legends

Creepy Monsters awaken, Haunting players With Dark Legends and Fear.

1.0kdownloads
WildLife
1.21

WildLife

A recreation of the WildLife series by Grian!

1.0kdownloads
Halloween Tweaks
1.20.5

Halloween Tweaks

Small and minor halloween-related tweaks to make your game spookier!

1.0kdownloads
Can't Sleep
1.21.2fabric

Can't Sleep

Some nights shows a message similar to "There are monsters nearby" and blocks sleep until the next day. Easily configurable.

973downloads
Polluted Rain
1.21fabric

Polluted Rain

Random things fall out of the sky!

963downloads
HardER
1.21.2

HardER

Just pure Minecraft, but harder. Just like the old days. No new items. No new mobs. Just harder.

961downloads
oSzoukaua's: XP is Bottles!
1.21.11

oSzoukaua's: XP is Bottles!

Mobs will now drop XP bottles that contain the exact amounts of XP the mob dropped!

957downloads
Zombalypse
1.21

Zombalypse

A zombie apocalypse plugin, it also adds "custom" zombies.

946downloads
Spooky Scary Thunderstorms
1.21

Spooky Scary Thunderstorms

Creepers may spawn as Lightning Targets now, and Thunderstorms can be conjured with Ominous Bottles!

946downloads