Minecraft Java 1.21 Mods
Browse 3,633 free mods for Minecraft Java 1.21 — popular picks include TQs Unstack Shulkers in item form, Aedans Unicorns, Altered (discontinued).
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TQs Unstack Shulkers in item form
Unstacks stacked shulker boxes that are in item form. Handy with mods that can stack shulker boxes in your inventory and on the ground, like tweakeroo and carpet mod.
Aedans Unicorns
Adds a shiny new unicorn horn to your world to save your horses from an untimely demise.
Altered (discontinued)
Once you enter you must see it through.
Soul Spawners
Craft and Activate Spawners in New Magical Ways!
Collision Effects
See every impact! HUD particle effects for impacts and environmental interactions
Leader Zombie Tweaks
[OBSOLETE] Appearance & stat changes to leader zombies, addon to Zombie Improvements
ZomBilliard Balls
Zombies drop billiard balls when killed by skeletons! Based on a weird dream I had one time.
Chaos Chickens
Unpredictable Chaos Chickens ready to ruin your day.
Baby Nautilus Persistence Fix
Baby Nautili bred from tamed parents don't have their persistence set. This datapack aims to fix that.

LootShare
Tired of divvying up loot after bossfights?
Loot Equipment│掠奪裝備
It is easier to loot equipment from mobs.│從生物身上掠奪裝備更加容易。
Random Mob Scaler
Randomly change the scale of naturally spawned mobs
One Way Gates
One Way Gates is a QoL mod that makes your farm animals enter, but not exit gates!
Horse link
Teleport your horse to you with a goat horn!
No Rest For The Living
Disables sleeping and spawns phantoms when you try to
Graze
Let your livestock find their own food and reproduce naturally.
Villagers Had Enough
Villagers will get aggressive when you steal, grief, or attack.
Allay Drops│悅靈掉落物
Allay will drop Amethyst Shards when killed.│悅靈被擊殺時會掉落紫水晶碎片。
Year of the Bomb
A mod where most of the vanilla items, blocks entities are long gone, and in their place, a giant, orange, dead post-nuclear wasteland awaits the player.
Nitroito's MobHeads
Collect heads from every vanilla mob and variant with advancement-based collection tracking.
S4mus Possession
Possess and play as many different Minecraft mobs, each with custom abilities, sounds, movement, and aggro behavior. Zombies, skeletons, illagers, wardens, breezes, endermen, wolves, piglins, pandas, and more all have unique mechanics.
Theyab Skyblock: Ramadan
A Ramadan-themed Skyblock mod with a custom trader, currency system, and themed food items.
Cloak Of Invisibility
Craft a mystical cloak that grants the wearer complete invisibility. Perfect for stealth missions, pranks, or avoiding that one Creeper at your front door.
NoWardenSpawning
Prevents wardens from spawning
Battle Only Capture
Requires wild Pokémon to be captured during battle and removes wild opponents after the battle ends.
Beneath The Void
Adds a New Dimension Beneath The Void
Player Nerfs│玩家削弱
Make the player's mechanics more scientific and more like other AI mobs.│讓玩家的機制更科學,更像其他 AI 生物。
Galactic Unown
A combination data pack/resource pack that adds Unown in the shape of the Standard Galactic Alphabet.
Spider Webber
Spiders place down fragile cobwebs while fighting, fragile webs clean up after a few seconds.
PigFriend+
Play Minecraft with a customizable, immortal warrior pet pig! ✨
No Mob Spawns
Fully removes mobs from spawning. This includes hostile, passive and neutral mobs.
Disable Spawner Mob Spawns
Disables spawner mob spawning with new gamerule

Megamobs
An origins addon that creates the chance for Big or occasionally Mega mobs to spawn. Encounter giants around the world!
Hard Spawners
Makes spawners spawn mobs if broken, primarily made for use with dungeon mods
Dark Mode Datapack
Minecraft, but it's dark.

Cobblemon Persistent Shinies
Makes Cobblemon's shinies persistent, similar to Legends:ZA.