Minecraft Java 1.21 Mods
Browse 54 free mods for Minecraft Java 1.21 — popular picks include T.O Magic 'n Extras - Iron's Spells Addon, Dark Doppelganger : Iron's Spells and Spellbooks Addon, Armageddon.
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T.O Magic 'n Extras - Iron's Spells Addon
Adds high-quality & immersive spells, boss, weapons, equipment, and MORE! Integrated with L_Ender's Cataclysm, Alex's Caves etc.
Dark Doppelganger : Iron's Spells and Spellbooks Addon
Boss that uses Irons spells to attack you, copies your name, armor, and weapons!
Armageddon
A highly configurable overhaul of Minecraft's way of progressing through the game : bosses, RPG-like, new mechanics, multiplayer compatibility, weapons, ores... !
Epic Paladins
new powerful Armors and Tools with custom 3D-models, bosses and more...
Mebahel's Creatures - Draugr Invasion
This mod introduces a full bestiary of Draugrs inspired by Skyrim, a boss with advanced AI, powerful magical items, shared multiplayer chests, new structures, and a raid system that turns the player into the hunted.
DivineRPG
8 New Dimensions ♦ 115+ New Mobs/Bosses ♦ Hundreds of New Blocks and Items ♦ Unique Weapons and Armor
Rpg: Better Elder Guardian
Makes the ElderGuardian a proper boss with custom attacks, increased health and special drops
GeoSmelt (Neoforge 1.21.1+)
An expansive ”vanilla” plus mod adding ores above netherite, a new boss, really cool blocks, and some sick swords!
Cataclysm's Rise
Cataclysm's Rise adds features between Bosses' Rise and Cataclysm to fill in gaps
Apocalyptic Bosses
Michi'sProject
Realms of Redemption
5 new dimensions, with bosses, dungeons and magic!
Mocha's Complicated Bosses
Adds multiple difficult bosses with complicated AI and unique equipment
Gravestone Dungeons Data Pack
This data pack adds dozens of small and massive dungeons, bosses, custom loot, magic spells, many custom weapons, enchantments and much more!
Manifestation of the souls (JOJO MOD)
Manifest your soul as a stand, kill bosses, follow quest lines and find structures
Realmwalker
Magical invaders roam the land - bosses, weapons, and loot!
Sol's Indicator (Damage, Entity Health, Custom Boss Bar HUD, and more!)
A lightweight mod that gives you real-time visual feedback on every hit you land. Know exactly how much damage you're dealing, with razor-sharp accuracy right as it happens.
Vampires Guns Dragons an Magic .
This Mod pack is intended for low end pc and offers a variety of content from magic'' bosses' and a new dimension.
BossBound Relics [Boss Drops & Weapons]
New weapons as a reward for beating bosses !
Dimensions & Dungeons
Explore a new world full of undiscovered possibilities, with new dimensions, bosses, mobs and structures.
Relics Of The Fallen Gods
Relics Of The Fallen Bosses Adds custom Legendary Items that have a chance to drop when you kill a boss Items include: The wither Hammer Warden Chestplate and Ender Dragon Bow
MRPG - Massive Role Play Game
This Modpack is an Fantasy RPG Modpack with many news like Biomes Weapons Bosses Structures Leveling System and more
Relics of Ruin
A custom weapon system featuring boss-themed swords with unique abilities and mechanics.

Undermagic II
Progression expansion featuring flashy weapons, structures, and a challenging boss fight
DeadSummons
This adds Magic of evil. We have three magic types, one boss. and items for your world!
Fortnite 3: Victory Royale
Featuring GUNS, BOSSES, OP WEAPONS & ARMOR, MAGICAL CROPS, INSANE TECH this pack is loaded with crazy mods that'll throw you on a wild ride
Iron Islands
Adds 6 different dimensions and 4 bosses.
Prism Drift
Balanced without magic and guns, adventure filled with loads of dimensions and various bosses
CrazyMC - A Special Apocalypse | Apocalypse with Quests!
A chaotic Minecraft adventure featuring zombie hordes, powerful bosses, firearms, magic, advanced technology, massive dungeons, and endless progression.
Lava Chicken Boss
Adds a new boss and an exciting battle with him, as well as his minions and some items.
Electric Boogaloo
Adds a new zombie dancing boss, Electric Boogaloo with his iconic Backup Dancers from the Plants Versus Zombies Games
The Angry Ghast
Three new Ghast themed bosses, one for each dimension
Void king dimension
Adds an epic boss fight with the Void King and his minions, spreading corruption, and powerful weapons.
APackByRandomGuy (ABGF)
Over 200+ Bioms / More Tools, Weapons and Tec / New Bosses and Structures / More Buildingblocks
Velorise EMC
A progression-focused EMC mod with transmutation, world tiers, alchemical machines, custom equipment, boss arenas, and endgame challenges.
ATMIL - All The Mods I Love
A mix of all the great and underrated mods, contain various weapons and bosses. Basically an RPG modpack.

Prototype 0.3
currently just adds some custom armor and weapons not much. later there will be bosses, extra mobs, A third set of armor, even more weapons, maybe vehicles, and a lot more.