Minecraft Java 1.21 Mods
Browse 606 free mods for Minecraft Java 1.21 — popular picks include Freeze Mobs on look, Instant Win Button, The Corrupted Past.
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Freeze Mobs on look
When You look at mobs they freeze
Instant Win Button
Adds an instakill melee weapon... or so you thought.
The Corrupted Past
He destroyed it all. He killed us all. He did this to us.
Solid Entity Hitboxes
This server-side mod makes certain entity hitboxes solid
Uno Reverse Cow
"The ultimate 'no u' for Minecraft. Try to milk a cow, and she'll milk you instead. Get a custom bucket of 'YourName's Milk'!"
Chickens do FLY
Chicken do fly! Allows you to glide down with chickens
Ranold's Better Squids
Improves Minecraft squids!
Usefuller Ghasts!
Configure the speed of happy ghasts (up to double speed) and craft an exotic new item that makes your happy ghast shoot fireballs!
ZeeInfused
A competitive PvP plugin where kills reward you with permanent positive effects and deaths curse you with negative ones. Inspired by the Infuse SMP created by InfamousJJ and Dione
Garfeldi [Cobblemon]
Back in 2024, I made an April Fools' addon for Cobblemon just called "Garfeldi", ironically posted to the Cobblemon server on April 2nd. I found the files, like, 10 minutes ago, made minimal changes, and decided to post it to Modrinth.
Chefmakes' Custom Peaceful
This is a peaceful mod for people who might want more out of peaceful, not less
Chicken Jockifier
A Minecraft Movie based data pack that turns adjacent baby zombies and chickens into chicken jockeys
Carpet-dwk-Addition
This mod adds new rules to /carpet
Everything's Exploding!
Make all mobs/animals behave like the creeper
The Fixed Script
Here I amn't.
Better Spawn Eggs craft
This data pack adds the ability to craft spawn eggs and spawners
Experimental Mob AI
Modifies behaviour of several mobs to increase difficulty
A Completely Ethical Mod
Removes most unethical behavior that players can perform on their mobs.
Stronger Fishing Rods
A Minecraft Paper plugin that makes the strength of fishing rods configurable
Everyone baby
A datapack that makes all mobs become a baby, even those that can't in the basegame. Use this datapack if you want the cutest experience :D.
Everything Explodes
Someone has strapped explosives to nearly every entity!
Hotter Mania
Mod updates savannas, deserts and badlands
Toxin Accumulation│毒素堆積
Bogged's arrows now inflict a more deadly poison.│現在沼骸射出的箭矢會造成更致命的劇毒。
Rage twist
A simple datapack that adds a ragebar that can be increased by attacking mobs and that makes your attack damage increase.
MobHat
Ever felt like your head was missing something? MobHat is a fun and lightweight plugin that lets you wear almost any creature in Minecraft as a hat!
Maximum Difficulty
A mod that increases the difficulty of Minecraft to its maximum, reaching 32-bit integer limits.

Pumpkin Madness
One new biome, "Pumpkin Grove", which contains secrets, but what are they? So figure this out, I won't give you any hints, but this biome will make you come back again! )
RealMobScale
Realistic animal scaling based on real measurements | light-weight plugin.
Warriors
You can get new friends that fight for you
Hallo Pumpkin
Happy halloween! This plugin adds pumpkins to all mobs
Hacker Villager
Place a command block next to an unemployed villager and the villager will now offer you unobtainable items!
Mob Lifesteal
This makes mobs steal your hearts when they attack you! Kill a mob to regain one heart.

Sender's Return Policy
A mod that allows you to specify which items/projectiles can reflect redirect-able projectiles such as Ghast fireballs and Breeze wind charges.
Night Challenge
You burn in sunlight, just like the monsters, good luck!
Cluck
Makes all mobs look like chickens
ConvertIT
Cycle between Zombie Villager and Villager with ease!