Forge Mods for Minecraft Java
Browse 23 free Forge mods for Minecraft Java — popular picks include Ender Dragon Fight Remastered, Arthropod Phobia Expansions + Horror Bosses / Arachnophobia, Armageddon.
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Ender Dragon Fight Remastered
A difficulty increase of Minecraft's final boss, with a focus on a somewhat Vanilla feel.
Arthropod Phobia Expansions + Horror Bosses / Arachnophobia
ArPhEx horror mod - realistic, intricate, phobia-inducing entities and supernatural bosses
Armageddon
A highly configurable overhaul of Minecraft's way of progressing through the game : bosses, RPG-like, new mechanics, multiplayer compatibility, weapons, ores... !
ROARING
Brace yourself for one of the Roaring Knight, one of the most Difficult Bosses you've ever fought in a Minecraft Mod. The Knight is fast, smart and uses Attacks that give ''Dark Damage'', which goes trough any type of Health Protection, so be warned.
The Day Of The Beast
Introduces The Devil, a new boss fight in the game.
CrazyVillagers
CrazyVillagers adds hilarious and chaotic new villagers to Minecraft! From a pooping villager to a newborn baby, a fat villager, and the powerful Mecha Boss — expect weird behaviors, dark humor, and total village madness!

BossCraft Respawn : Unofficial Port
Unofficial Port of BossCraft 1.3.2
Biomes Of The Ancients
A Realm RPG mod that aims to overhaul Minecraft entirely, adding new bosses, biomes, mobs, dimensions, tools, weapons, etc. With a lot of lore to invest into.
RSMC: The Third Age (RuneScape in Minecraft)
RSMC: The Third Age is a Minecraft MOD that brings RuneScape to your Minecraft Worlds. RSMC can be played in Single Player or Multiplayer. It adds 24 Skills, Trading, GE, Bossing, Mini Games, Dungeons, and so much more
The Dulling - A Final Challenge
Adds an eldritch threat to your world, with Bosses, Dimensions, Magic, & more!

BossCraft Respawn : Overlord
Unofficial Port of BossCraft and BossCraft2 Content

Calamity
Calamity is an expansive overhaul project that introduces challenging new bosses, unique mechanics, and a rich layer of lore to the core experience.
GahoodRPG
Adds RPG elements to minecraft which includes classes, armor, weapons, bosses, and more.
The Dulling
A Cosmic Horror Story with Bosses, Dimensions, Magic, and more!
BLACKSOULS II
A hardcore dark-fantasy RPG mod with custom stats, skills, bosses, souls, weapons, accessories, and brutal combat mechanics.
Damage Indicator YS
Adds a clean red bossbar health display for the entity you’re looking at, with readable damage, healing, and health feedback.
Cognitio
A chaotic world with strong monsters and bosses and cool artifacts with powerful abilities.
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.
Beyond The Edge
Many new dimensions, bosses, mobs, and ores that will help you progress through the mod. It is a progression-based mod, where each dimension increases in difficulty. It is a post-game mod. It is a mod with some story elements.
D E S C E N T
A datapack focused on adding skill based bosses and complex weaponary.
Boss And Magic
this mod add new unique bosses and many more content to the game
Legendary Monsters Fix
Have you ever been frustrated by the various restrictive mechanics of bosses in the Legendary Monsters mod that you couldn't modify? Potion effects don't work on bosses?Damage cap per hit, making
The Fallen World
This mod adds things like dimensions, blocks, items, mechanics, bosses, mobs, structures and much more!