Forge Mods for Minecraft Java
Browse 1,180 free Forge mods for Minecraft Java — popular picks include Witheria, One Piece Bosses - Mine Piece X Mine Mine No Mi Addon, Mortality - A Terramity Addon.
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Witheria
Adds a boss with many attack patterns and unique animations. Beatable in Vanilla.
One Piece Bosses - Mine Piece X Mine Mine No Mi Addon
Addon to use the mine piece bosses on the mine mine no mi game system, working with One Piece World Like
Mortality - A Terramity Addon
Mortality adds new content and weapons, minibosses and resource farming methods, but most importantly, Structures and Dungeons to Conquer!
food bosses: reheated!
the joke-ish foods are back
God of War Ragnarok
GOW Themed mod that adds many weapons, bosses, and more!
Abyssal Corrupter
Face the terrifying Abyssal Corrupter — a multi-stage deep abyss boss that can be summoned via ritual altar in Minecraft 1.21.1 NeoForge.
Cursed Fate Boss Buff
an addon to "Jujutsu Kaisen Cursed Fate" designed to buff the bosses from the mod
Shurui's DMZ Raid-Bosses
Turn any mob into a fully configurable, scheduled raid boss event - no coding, no datapacks, all in-game. Set up multiple named bosses, each with its own WorldEdit-defined arena, sign-up window, and reward table. Health and damage scale with playercount.
The Mini-Bosses
Adds eight new bosses, new armor, and new weapons!
Boss Results
Defeating a boss sends a clickable chat message that shows performance statistics for every participating player in that boss fight.
No Boss Bar
Hides all boss health bars from the screen, keeping the UI clean and unobstructed
Cataclysm Apotheosis Addon NEO
Give the boss in L_ender's Cataclysm a big buff!
Nugget's Dungeons
A mod adding new dungeons, enemies, bosses, and loot. Made for my upcoming modpack.
Daily Boss X Bosses Rise
This mod adds the bosses from Bosses Rise to the Daily Boss event.
Red Forest
Boss fights, quests, tasks, tools, and guns. Biomes and dimensions with 13+ mobs and 15+ structures and many more.
LUNACY: The World of RPG
Are you board of regular Minecraft bosses, mobs, and weapons? Fear not, Lunacy has it all! Enjoy many new bosses, mobs, weapons, and armor in this amazing mod!
[SMS]Spirit Mediumship Spell - Iron's Spells Addon
This mod adds fresh spells to Iron's Spells 'n Spellbooks that let you summon all kinds of wizards, tough vanilla and Iron's Spells 'n Spellbooks foes, and even boss mobs from mods like Cataclysm.
Wise Mystical Tree of Wisdom
Adds a new boss, The Wise Mystical Tree of Wisdom!

BossCraft Respawn : Unofficial Port
Unofficial Port of BossCraft 1.3.2
Nether Sentinel
Meet the Nether Sentinel: Minecraft's new Nether boss! Face this fiery challenge and prove your bravery in an epic battle.
Gateway of Doom
Throw a Devil Eye to open a configurable combat gateway. Survive random or fixed waves, bosses and timed challenges for rewards—or suffer debuffs. Includes auto gateways, custom mobs, profiles, admin menus, commands, diagnostics, plus a stable add-on API.
bosses' addition
a great challenge for those who are bored from vanilla, all in vanilla.
Slammer Boss
a mod that adds a new boss to the game
Paladin's Oath
This Mod Adds Mobs Bosses Armor Weapons And Abilities To your Minecraft World Can You Be the Best Paladin?
Ultimate Warden
A Datapack/Mod that enhances the Warden with a custom Dungeon, a Temple, boss battles, and more.
Shuumatsu no Valkyrie: Project Ragnarok
This mod is based off the manga and anime Shuumatsu no Valkyrie: Record of Ragnarok. It has skills, weapons, enchantments, transformations, races, abilities, dimensions. biomes, structures, bosses, mobs, stats, and most importantly, BUDDA
Misanthropy's Armageddon AI Fix
Improves the sluggish AI of armageddon mods bosses.
Bosses Rise Intro Skipper
Skip the boss animations in the Bosses'Rise mod.
Leo's Bosses
A mod that added bosses with nice loots to Minecraft,
BossSpawner
Added a customizable spawner to Minecraft that can spawn any entity.
Extra Bosses
Adds a few extra bosses into the game, plus a few extra features. (IN DEVELOPMENT)
Zoologics
Modification adding in game new animals, and plants, bosses.
The Beginning And Heaven
The Beginning and Heaven adds mainly two dimensions: Beginning, with the boss Iner Angel, and Heaven, with unique biomes, minerals mobs
Beyond Deepest Dark - Sculk Dimension
The mod adds the sculk dimension, mobs, and the boss
Moonstruck Phantasm
Adds the Moonstruck Apparition, a highly developed boss with fleshed-out attack patterns to your game.
Riftstorm RPG
Global high-quality RPG mod which add new bosses, weapons, blocks, creatures and features!