Minecraft Java 1.21 Mods
Browse 2,241 free mods for Minecraft Java 1.21 — popular picks include HeadBlocks, Cobblemon Boosters, Jeck230NOTREALWORLD.
Updated daily
HeadBlocks
Hide heads in your world and let your players find them to earn rewards. Perfect for an Easter event.
Cobblemon Boosters
This is a Server side mod that adds different types of timed boosters to your server. These boosters can be used to increase the chances of finding Shiny Pokemon, or increases the catch rate!
Jeck230NOTREALWORLD
AI-generated horror mod that adds the mysterious entity Jeck230, disturbing sounds, and a strange “not real world” atmosphere.
Sizechange
This Datapack add some totems and shields that when held make you big or small, and they are expensive.
Project: Explosive
Adds realistic explosions while keeping Minecraft’s vanilla style.
Fleecifer
Turns all sheep hostile...

Sculk Contagione
Makes Sculk more, lets say, invasive

Armaments
Adds a few new unique and interesting weapons to the game
Nuke Plugin
A project based on cubicmetre's orbital strike cannon
Amai's Aimassist
Plugin That adds /aimassist to game (if player have permissions)
BiomeBetray
Biomes occasionally and silently swap your hotbar items with random ones from your inventory when you enter them :trollface:
Color Only Challenge
Beat Minecraft after being assigned 1 of 10 colors. You can only break blocks that match your color, making every run chaotic and completely different.
Reaper's Scythe
Introduce the legendary Reaper's Scythe, an end-game weapon with permanent combat buffs, a devastating right-click AoE attack (Wither II), and an on-kill speed boost. Highly configurable.
Unusual Precipitation (Rain)
This datapack rains random items/mobs/projectiles from the sky!
Potatomod
The potatomod is a funny and unlogical mod.
Ravents
🗸 Ravents for custom mechanics. Design multi-wave raids with complex triggers, create unique mobs with modified stats, gear, and mounted towers. Spawn control: Replace vanilla mobs or add custom copies.
Everything is #dirt
'It's all dirt?' "Always was" Everything is tagged as dirt, glhf

Mineable Spawners
Makes spawners and trial spawners mineable (ONLY!) with a silk touch netherite pickaxe
ItemDuper-Pro
Perfect for players who want convenient item duplication with modern improvements and reliable functionality.
Parryable Projectiles
A datapack that makes all(with exceptions) projectile parryable, like the ghast fireball.
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.
linecraft
Experience Minecraft in a 3-block wide line!
TargetLock
Press J to instantly aim your camera at the nearest living entity within 10 blocks. If no entity is in range, a message will appear on your screen letting you know.
Vanilla Backrooms
Vanilla-Backrooms is a server-side only Backrooms mod based on Polymer

Big Fungus
Grow thick fungus trees by planting fungi in a plus shape
Enderman Death Silence
Enderman will stop their long scream when they die. Highlighy optimized mod that provides a minor satisfying improvement.

Totem of Null
The Totem of Null, From Unstable SMP which when popped, Tagged players die.
Breaking One Block Breaks All The Blocks
If you break a block... it breaks every block in a 50 block radius.

InvisibleKiller
InvisibleKiller is a lightweight Paper plugin that replaces death messages when the killer was invisible, preventing players from knowing who killed them.
Make It Rain!
Client-side mod that adds rain to normally dry Overworld biomes

Orbital Strike Arrow
This project adds the Orbital Strike Arrow, but with commands! This was inspired by Flowtives Arrow Cannon in Heartless Horizons.
Toxic Mod
A mod that is extremely toxic for no reason
Nether Infection
The Nether can infect your world !
Titan SMP
A Plugin with Custom Abilities.
The Game Crasher
Instantly crash minecraft with 1 command on any PC! (Not a lag crash)
BlockDropRandomizer
This plugin/mod turns every Minecraft world into a unique random‑drop challenge where each block-type drops a random Item.