Minecraft Java 1.21 Mods
Browse 577 free mods for Minecraft Java 1.21 — popular picks include Realms of Runeterra: A tale of Relative Dimensions, Omni-Archive, NoMoreJumpscares.
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Realms of Runeterra: A tale of Relative Dimensions
New blocks, items, mechanics, stories and adventures await you in a 131072-side block map of Runeterra, the world of the world-wide known MOBA League of Legends. An immersive new dimension paired with procedural generation to spice every new world!
Omni-Archive
The content is based on Ben 10 Omniverse,The Cartoon Network Series.
NoMoreJumpscares
Removes the Elder Guardian curse effect when receiving mining fatigue
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.
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.
Achievement Multiplier
Unlock advancements to massively multiply your block and mob drops.

Snowier Golems
Allows you to enchant snow golems for new abilities! (made for WinterJam)
Neutrality Redux
Neutrality Redux is a remake of a mod about the interaction, friendship and development of the Illager race!
WildLife
A recreation of the WildLife series by Grian!
STAR WARS: Project The Force {SWPTF}
A project that will completely immerse you in a Galaxy far, far away;)
ItemDisplayPlugin
This plugin allows the collection of items dropped within a 5-block radius in Minecraft, merging the items with the same type and displaying their quantity in the item’s custom name. Items that cannot be stacked, such as enchanted equipment (e.g., swords,

Spectrum Compat
Integrates Spectrum mechanics into other mods
Spawner Upgrades
A datapack that allows you to collect spawners with silk touch, and/or upgrade them with craftable custom items.
Multipack: Enhanced Vanilla
Enhanced the vanilla experience with a multitude of features which each improve the game in unique ways
IFC-Integrations
Unite the worlds of Ice and Fire and MCA Reborn with legendary relics, enhanced creature interactions, and a new way to experience both mods together.
Mobo's Structures
Pirate Ships! Castles! Dungeons! Towers and More! If you're an explorer, this datapack is for YOU!
Dreamlands
Escape reality in your dreamland.
EnchantedHarnesses
Faster Happy Ghasts with speed customization & a custom enchantment for harnesses
Bear Traps
Adds Bear Traps to the game, they can be used to damage mobs that step on them and keep them in place
MorphMaster
This Datapack allows you to morph/transform in any mob/item/block in minecraft
NeoPasterDream
Also known as the NewPasterDream, it is a port of the original mod to the 1.21.1 NEO loader, and has been restructured to make it more oriented towards adventure themes.
Universal Trinkets
Modular, command-powered trinkets for mapmakers, mod-pack devs, and power players.
Harder
Increased Damage: Boosts mob damage based on the number of days spent in the world and a cuztomizable percentaje. More+
Project Jujutsushi
A datapack that is dedicated to the Jujutsu Kaisen anime/manga.

O's enderite
Adds new ores, tools, mobs, blocks and structures based on Enderite — a powerful resource from the End.
Mob HeadSteal SMP
Collect player heads on kill and unlock powerful abilities using custom mob heads in intense PvP combat.
JOJO - stone block crusaders
Many features from the popular manga/anime jojo's bizzare adventure (jjba)
NeoBB - BlockBattles
A better version of Block Battles, where multiple players compete in a turn-based game, similar to chess or card games.
Help Me Hardcore
Help Me Hardcore Adds All Kinds of Extra Challenges from Community Ideas to Full-Themed Updates for Your Hardcore Worlds or Even Hardcore SMP Servers!
Random Events
Random events occur periodically to keep the players challenged.
oCode-AnarchiaBosses
Create custom bosses with skills, attributes, equipment and more!

Old Legends
The remains of old legends wait to be discovered
oSzoukaua's: Invisiward
Do you hate yourself? Do you want a "real" challenge? have you considered... invisible Wardens?
Shielding Swords
A light weight pack that adds the sword block mechanic, Similar to minecraft update 1.8, you can now block attacks using your sword and neglect part of the damage and knockback dealt to you. Brilliant!
koper_mod
A chaotic Minecraft mod with unique bosses, broken armor sets, and a corrupted dimension a little unbalanced but fun as hell.
sibliths rideable phantoms
Use two enderpearls and a clock to summon a giant rideable phantom!