Minecraft Java 1.21 Mods
Browse 1,573 free mods for Minecraft Java 1.21 — popular picks include Morphilla, Custom Starters Menu - Cobblemon, Avatar: Legend Reforged.
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Morphilla
Morphilla is a (vanilla) plugin that makes transforming into a mob possible without any mod!
Custom Starters Menu - Cobblemon
Relive the excitement of choosing your Starter Pokémon just like in the official games, inspired by the iconic Starter Lab!
Avatar: Legend Reforged
An "Avatar: The Last Airbender" inspired Minecraft mod with realistic bending
Elden Kingdom
Explore the enhanced Minecraft world with The Warseed—new mobs, advanced storage, and immersive magical and medieval landscapes, all centered on the Create mod.
Spruce Willis the Xmas Tree
Bruce has evolved into Spruce Willis the Christmas Tree!
Journey Into The Light
Journey Into The Light (or "Journey" for short), formally known as Essence of the Gods, is a large exploration mod that not only expands the vanilla content added - but also adds 8 new dimensions, over one hundred mobs, strong weapons and armor, and more
Silent Mobs/Minecarts
Name noisy mobs or minecarts "silent" to silence them!
Ethereal Grove
This project is a datapack inspired by The Twilight Forest mod. Bringing veteran player nostalgia into a future vision of what the The Twilight Forest may look like.
NMI - server side mods only
This is a collection of over ✨150+✨ server side mods that enhance your gameplay with voice chat, factions, economy, seasons, dungeons, buildings, mobs and much more. 🌌
Sentient Pants
Adds the Sentient Pants leggings enchantment, idea by @eightsidedsquare.
Effective Invisibility
The invisibility status effect turns mobs detection range to 0 no matter the conditions.
Daily Boss x Iron's Spells n Spellbooks
Compatibility between Daily Boss and Iron's Spells 'n Spellbooks.
Ride My Mon [Cobblemon]
Adds more Pokemon to be rideable in Cobblemon 1.7
The Conjunction of the Spheres - A Witcher World
New monsters, armors, weapons, potions and challenges from the Witcher Universe, beware, The Conjunction of the Spheres!

Adventurer's Beyond
Explore lost structures. fight dangerous bosses, and journey to the beyond in this epic mod.
Redstone Crusaders TURBO !
A Jojo's Bizarre Adventure mod. Starring Stands with pushed combat and combo potential !
Real Peaceful Mode
Realize monsters' expectations, and get along well with them.
Gateway of Doom
Throw a Devil Eye to open a configurable combat gateway. Survive random or fixed waves, bosses and timed challenges for rewards—or suffer debuffs. Includes auto gateways, custom mobs, profiles, admin menus, commands, diagnostics, plus a stable add-on API.

Undying Pets
Keep your pets out of harms way by giving them a Totem of Undying
Trident All Weather Channeling
Channeling works in any weather, not only thunderstorms
Longshot
Upgrade your ranged combat with enhanced projectile velocity! The archer's 'Strength' potion effect
Maid's Return
Add lost maid! Now you can fight with these maids.
Ars Expeditions
A magical journey through unexplored lands, Ars Expeditions is an Ars Nouveau-centered modpack focused on discovering new lands, new dimensions, and new creatures.
Particle Expansion
Make the gameplay more satisfying by adding particles to some situations in the game.
No fall-damage
A simple SERVERSIDE mod that removes fall damage for all entities.

Gensokyo: Reverie of Lost Dreams
Gensokyo: Reverie of Lost Dreams, a modern Touhou Project mod.

oSzoukaua's: Floating Damage
Want to see how much damage you do? Now you can see it though floating numbers!
Call Your Nautilus
Easily call (whistle) your nautilus with a goat horn to teleport it to you
Eclipsera
Eclipsera is a mystical biome filled with glowing flora, spectral beings, and rare resources. Battle deadly creatures, gather materials and craft powerful weapons
Moar Bosses
Moar Bosses adds 7 types of randomly spawning bosses into your Minecraft world. Each boss has 3-5 unique and crazy magical attacks, and drop cores that can be used to craft magic wands. The bosses have custom textures using Optifine or Reselect or CET.
Shadow Summoner
Defeat entities, collect their souls and summon their Shadow
Acolyte : Iron's Spells 'n Spellbooks Addon
Demons capable of using spells against you, recruit help to defeat them
Daily Boss x Bosses of Mass Destruction
Compatibility between Daily Boss and Bosses of Mass Destruction.
Palamod RECREATED
Palamod Reproduction of the FAMOUS mod of the Paladium faction pvp server
Useful Snowball
Useful Snowball! Make snowballs do damage, slow mob and even clear all fire nearby!
MorphV2
Morph into anything you kill