Mods for Minecraft Java
Browse 171 free mods for Minecraft Java — popular picks include ScalingMobs, BossCraft Respawn : Overlord, Grace999.
Updated daily

ScalingMobs
Adjusts the stats of bosses and mobs, multiplied by the number of players on the server.

BossCraft Respawn : Overlord
Unofficial Port of BossCraft and BossCraft2 Content
Grace999
GracePlugin provides configurable, per-world grace periods with PvP and mob damage protection, boss bar countdowns, sound alerts, and customizable safe zone regions with flag-based protections.

Vital
A mod which adds clean, minimal, but readable SHADER COMPATIBLE health bars to each mob in the game (optionally replacing boss bars with colour coded bars per active boss too).
Diary of an 8-Bit Warrior
Experience Aetheria like a Terrarian! Complete quests, kill bosses, and level up your skills! Maybe you'll even meet Runt and his friends…
Piglin Wither
Adds a new piglin wither boss
Harry's Hostile Expansion
Adds many different hostile mobs, mechanics, structures & bosses.
DAG Mod
Race & class system, 200-level progression, custom dungeons, boss battles, two custom dimensions, NPC quests, party play, and craftable consumables with real combat effects. Everything in one mod.
The Dulling
A Cosmic Horror Story with Bosses, Dimensions, Magic, and more!

Calamity
Calamity is an expansive overhaul project that introduces challenging new bosses, unique mechanics, and a rich layer of lore to the core experience.
Wands & Wizardry
Bringing Noita's spell system to Minecraft with fully modular wands, over 60 spells, a new boss fight and more!
Bosscraft 2: Remake
Bosscraft 2: Remake is an unofficial project inspired by Sthullen's famous mod for older and outdated versions of Minecraft. This project takes the iconic mechanics of the classic mod and integrates them into modern versions of the game.
Mechanical Bosses
A mod by Yolo1324
Ivar's Bosses
Ivar's Bosses is a mod that introduces formidable bosses to the game, featuring unique attack patterns and special summoning rituals. These ancient creatures will unleash their wrath upon anyone who dares disturb their eternal slumber.
More And Ore
More And Ore Contains an increasing amount of Content, Beginning with Ores and Items as well as Various Armors, Tools and Weapons, as well as Exponential amounts of New Features, Mobs, Bosses and Difficulty increasing Modifications!
Theosis
Plugin-ready RPG survival with loot, gems, bosses & biomes. Thesis-style modularity. Multilanguage Apotheosis-inspired
GahoodRPG
Adds RPG elements to minecraft which includes classes, armor, weapons, bosses, and more.
[WIP] DragonFist Legacy
(INCOMPLETE and WIP) Adds martial artists to Epic Fight, along with new content, structures, and mini-bosses throughout the world.
Deepcraft
A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.
DungeonRPG
Diablo-style dungeon crawler for Minecraft. Delve 7 themed dungeons, battle scaling bosses, and hunt randomized loot across 5 rarity tiers, 65 unique items, full leveling from 1–100, and a Salvage Station to scrap, repair, and recycle gear.
Bossmode
Bossmode is the difficulty above hardcore that turns every mob into a boss fight, including passive mobs. Can you survive?
Mekanism: FuryBorn in the Artifacts
Adds some mechanical bosses for Mekanism Mod!
Palamobs [ Discontinued ]
An add-on for Palamod Recreated and Custom NPC. The different mobs will finally be able to burst into your adventures with their different dungeon styles, bosses, and NPCs.
BLACKSOULS II
A hardcore dark-fantasy RPG mod with custom stats, skills, bosses, souls, weapons, accessories, and brutal combat mechanics.
Daily Boss - More Config
Add more config for Daily Boss
Conquer & Evolve - restored
A mod that adds new content: items, creatures, bosses, weapons, structures, mechanics, and battles
Dino Rumble
A very expansive and quality dino mod adding food items bosses and more!
stupid horror mod
this is a joke horror mod that adds a scary biome, where you have to kill scary creatures to collect scary souls to later craft into a boss altar and fight the boss. there is an ingot with good weapons that can take down most of the scary creatures.
Ominous Wither
Adds a thrilling boss fight experience, summoned by building the Wither with Bad Omen.
oCode-AnarchiaBosses
Create custom bosses with skills, attributes, equipment and more!
VortexRPG
VortexRPG is a fully self-contained MMORPG engine built for modern Paper servers. No dependencies. No stitching together five separate resources. Everything — classes, talents, spells, professions, dungeons, bosses, quests, economie
koper_mod
A chaotic Minecraft mod with unique bosses, broken armor sets, and a corrupted dimension a little unbalanced but fun as hell.
Lokotess´s Adventure
The mod adds bosses, items and new mechanics.
ZApocalypse
ZApocalypse is a Fabric mod for 1.21.1 that turns every night into a zombie wave, with elite variants, blood nights, and a Zombie Lord boss. As the apocalypse escalates, zombies evolve unique abilities while other hostile mobs retreat deep below Y=25.
Hardcore Horizons
A all new survival experience that will add new Bosses Biomes Blocks Dimensions Updated versions of all the current dimensions Mobs Structures Tools music And Lots More
Document 17
Document 17 is a mod that adds in; 30+ characters (armors) two double chest's worth of items, a whole assortment of bosses to fight. and new- interesting ways to play the game. along with several base superpowers for players to use. want superheros? here.