Mods for Minecraft Java
Browse 309 free mods for Minecraft Java — popular picks include Minecraft-The CATASTROPHE mod, Born in war Ashes, the weirdest bosses ever.
Step by step: How to install Minecraft Java mods & modpacks
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Minecraft-The CATASTROPHE mod
Adds new bosses to the base game, and overhauls the progression
Born in war Ashes
A large-scale mod that changes the vanilla game in all aspects: Many bosses, unique items, weapons, accessories, mana system, stealth system. Class division of players, many structures, new biomes, new mobs.
the weirdest bosses ever
This an extremely weird mod which adds weird stuff and even a weird dimension you need 12 beacons to go there lol
souls like universe entities rework
updated souls like universe for better bosses compatible with latest epic fight addons

Hyrinity (Legacy)
An overall content mod adding progression, bosses, dimensions and more!
Slime Dimensions
Explore the Slime World through custom portals, discover slime biomes, Liquid Slime oceans, new blocks, mobs, resources, bosses, and progression toward Arcane Slime Tech.
creeper-apocalypse
Mob Replacement System ALL mobs spawn as Creepers! with exceptions Exceptions that remain normal Blazes you still need blaze rods! Villagers or trading Ender Dragon final boss remains Iron Golem
Ruinous
A minecraft mod that adds a bunch of stuff, including new mobs (2 bosses), new gear and new structures.
Tales of the Third Age - Balrog
Adds a Balrog Boss to your Middle Earth modding experience!
Hantai No Tengoku
A simple magic mod that can run on any pc, tame demons, summon hellhounds , travel to limbo and fight upcoming bosses
Penguin Madness
A mod adding Bossfights weapons and more!
Oscurium
This mod adds new bosses, items, tools, armour, mobs and dimensions.
Darkest Garden
Adds a new boss to the Pale Garden!!!
Advancement Share
Shares kill advancements and XP from mobs/bosses with all players who dealt damage.
Star of the world
this mod will add new mobs, ores, food, bosses and totally new structures
Boss Update
This mod adds three new distinct bosses with custom drops and powers. (also available in multiplayer worlds.)
More Ore -
Mod that adds more content and more ore to minecraft. New content includes bosses, dimensions, weapons.

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.
Crowned Herobrine [LEGACY]
Adds a new boss called Crowned Herobrine that is a formidable opponent. He drops a useful crown ;)
NexusMobs
NexusMobs is a comprehensive RPG plugin that transforms your Minecraft server by introducing over 20 unique bosses
Holger Soup and Sorcery
This Mod adds many soup themed items to the game. Also a flying soup boiler that attacks you and a Soup Biome and Dimension. Also this mod adds the substance Holrosium and Holgarium, Crows and a Bossfight with Holger.

Skillbound-RPG
Skillbound transforms Minecraft into a classic RPG with level-based skills, improved combat progression, magic, prayers, Slayer tasks, bosses, new equipment, and rewarding unlocks as you advance from levels 1–99.
Cognitio
A chaotic world with strong monsters and bosses and cool artifacts with powerful abilities.
In the Journeys
The mods expand Minecraft further with new ores, mobs, biomes, dungeons, bosses, and magic to discover.
random things/stuff
random things i added with blockbench for models and mcreator this adds new ore mobs bosses blocks tools items and much much more
iMode
iMode adds witchery, custom spells, new mobs, 4 new bosses, an infinite dungeon dimension and makes game progressively harder. Also adds a level system. Everythig is toggleable in configurations.
UltraRituals-Free
Offering altar system to summon bosses, free version
The Division
The Division adds two new dimensions, bosses, gear, and a narrative about creation and destruction. Explore a cybernetic realm and the corrupted "Beginning", forge legendary weapons, and uncover the secret behind the divide between worlds.
MagicAirdrops
Replace boring airdrops with new events with various rewards and bosses.
7 Deadly Sins : Reworked
A feature-rich Paper 1.21.1 plugin introducing 70 custom enchantments, raid bosses, progression systems, and party-based gameplay inspired by the Seven Deadly Sins.
GuardianOfNether
Just a boss protecting the Nether from visitors who would dare to enter the Nether 🔥
Raijin's Wrath
Unleash the wrath of Raijin — a Fabric adventure of thunder-forged gear, lightning-touched foes, summonable bosses, sacred shrines, and an in-game compendium guiding your ascent.
BossRewards
Reward top damage dealers in MythicMobs boss fights!
Cube' Em
This mod takes the Rubik's cube to a whole new level and adds it all to Minecraft! We got new structures, new items, a new block, and an OP new sword that you can only get from killing my new boss!
Artifacts and Bosses
This mod adds new gems that can be collected from 4 new bosses
Matadora
Short Description Matadora is a progression-based magic mod for Fabric that adds mana, spell schools, ritual crafting, magical artifacts, mastery progression, bosses, and rare world structures.