Mods for Minecraft Java
Browse 296 free mods for Minecraft Java — popular picks include Penguin Madness, Minecraft-The CATASTROPHE mod, Ruinous.
Updated daily
Penguin Madness
A mod adding Bossfights weapons and more!
Minecraft-The CATASTROPHE mod
Adds new bosses to the base game, and overhauls the progression
Ruinous
A minecraft mod that adds a bunch of stuff, including new mobs (2 bosses), new gear and new structures.
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

Hyrinity (Legacy)
An overall content mod adding progression, bosses, dimensions and more!
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
Oscurium
This mod adds new bosses, items, tools, armour, mobs and dimensions.
MythicRewards | Boss kill reward/drop plugin with custom rule support | 1.20.5+
MythicMobs Support - Top damage rewards - 6+ reward type built-in - Create your own reward rule
Tales of the Third Age - Balrog
Adds a Balrog Boss to your Middle Earth modding experience!
Grandia Dungeons
A dark fantasy roguelike dungeon adventure with classes, bosses, cursed loot, magic, traders and procedural floors.

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 ;)
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
Boss Update
This mod adds three new distinct bosses with custom drops and powers. (also available in multiplayer worlds.)
Thorm's Bosses
An action-packed End expansion adding 3 new dimensions, custom resource progression, and 8 legendary animated bosses with exclusive rewards.
SpellCraft - Magic World
A Harry Potter-inspired magic mod adding wands, spells, wizard dueling, potions, a leveling system, magical creatures, a wizarding village with traders, and dungeons — including a boss lair and a dementor-guarded prison.
More Ore -
Mod that adds more content and more ore to minecraft. New content includes bosses, dimensions, weapons.
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.
NexusMobs
NexusMobs is a comprehensive RPG plugin that transforms your Minecraft server by introducing over 20 unique bosses
Cognitio
A chaotic world with strong monsters and bosses and cool artifacts with powerful abilities.
Summoners
Turns ordinary mobs into mini-bosses that summon reinforcements.
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
In the Journeys
The mods expand Minecraft further with new ores, mobs, biomes, dungeons, bosses, and magic to discover.
GuardianOfNether
Just a boss protecting the Nether from visitors who would dare to enter the Nether 🔥
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.
BossRewards
Reward top damage dealers in MythicMobs boss fights!
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.
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!
UltraRituals-Free
Offering altar system to summon bosses, free version
EssenceBound
Adds 4 new bosses with special items and a crafting levelling system for 2 of them :)

IceNFireFactionsWeapons
this project is supposed to be another part of my other project about faction in iceandfire dragons, which will get released soon. it adds ancientite, a rare ore made of ancient dragon remains. it adds weapons, a boss, and armors
History of the Ancients
History of the Ancients (HotA) is a story mod that adds more new content: worlds, mobs and 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.