Forge Mods for Minecraft Java
Browse 1,183 free Forge mods for Minecraft Java — popular picks include Moonstruck Phantasm, Riftstorm RPG, Krakentilus.
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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!
Krakentilus
Adds the Krakentilus boss, 2 unique Nautilus variants and 3 spears
Boss Keys
Conquer Monster Spawners using new Dungeon Keys
Ambience Mini
Play custom music based on player-state, locations, biomes, dimensions, combat, bosses, etc.
MagicCraftAdventure
This Mod adds 15 new Bosses, Dungeons, New Armors, new Ores, new Creatures, Blocks and other Items!
Sol's Indicator (Damage, Entity Health, Custom Boss Bar HUD, and more!)
A lightweight mod that gives you real-time visual feedback on every hit you land. Know exactly how much damage you're dealing, with razor-sharp accuracy right as it happens.
Arda's Ultimate Golem
Arda's Ultimate Golem mod adds a powerful golem to the game, and this golem is a golem that helps you against bosses or creatures you fight.
Boss Fight Optimizer
Add some of the features of the Terraria Calamity mod to improve the performance of boss fights!
Titans
This mod is made for those who love adventures. Adds new ore, materials, items, structures, and a boss
Monstrosteve
This mod adds a goofy boss mob.
vtubruh LOTR Mobs
RPG mod that adds new structures, mobs, weapons, armor, bosses, pets, magic, quests, and achievements. It will suit not only LOTR fans but also regular content-mods seekers for their modpacks!
Sun Screamer Horror
Sun Screamer Mod adds a flying, stalking boss with creepy explosions and eerie behavior, creating a haunting challenge for players seeking a thrilling and intense Minecraft experience.
Daily Boss - More Boss Config
Add more config for Daily Boss
AngelCraft (boss and rewards)
adds a boss and his loot
FUZZYMOBS
Adds over 200 NEW Mobs, 3 Invasions, Strong Weapons, Bloodmoon event, dark moon event, bosses, custom music, everything close to vanilla style
The King of Twilight
Add the final boss to the twilight forest. (Mod for White Shrimp's Great Adventure Modpack.)
Boss Checklist - Stellarity Compatibility
Integrates the Empress of Light boss from Stellarity as an entry in the Boss Checklist mod.
Croparium: Arphex
Skip grinding tough bosses for Arthropod Phobia Expansions’ biomasses—grow them with biomass farmland instead!
Eternal Descent Custom Resources
Required component of the Eternal Descent modpack - adds levitation orbs, dimension keys, recipes, boss summoners and structure spawning to it
JAGM (guns,bosses,etc)
Adds Bosses, Weapons, Biomes, etc.
Equinox's Story Mode Mode Blocks And Other Utilities
A utility for the modpack Equinoxs Story Mode, includes mostly boss fight music for the server events happening over on the official ESM server, and some added blocks
The Old LMB
A Mod that adds new Bosses, more angry mobs and some animals from our planet
The Between Awakens
Massive Exploration Content Overhaul Mod With Bosses
Avzerixs cataclysms
this mod adds six new cataclysm's and three new bosses, I tried to make most of it compatible with ProjectE (warning it's not balanced at all, with ProjectE)
BossBound Relics [Boss Drops & Weapons]
New weapons as a reward for beating bosses !
Lu's More Bosses [LMB] (Forge / Neoforge)
U want more bosses? We have more bosses
Fimbulwinter
A mod which brings a new winter-themed dimension, boss and mob-variants to the game
Just-In AETHER
A brand new dimension, filled with numerous creatures, resources, and boss mobs.
Daily Boss x Annoying Villagers
Compatibility between Daily Boss and AnnoyingVillagers.
Ultris Bug Fixes
Fixes various bugs present in the Ultris: Boss Expansion data pack/mod.
Boss Checklist - Scorched Guns 2 Compatibility
Integrates all raid bosses as well as the Scamppanzer from Scorched Guns 2 as entries in the Boss Checklist mod.
Croparium: Cataclysm
Turn L_Ender's Cataclysm ores into farmable crops— grab materials once, and regrow them nonstop, instead of endless boss-hunting!

Sporeadds
Mod that adds 4 survivors origins and 1 boss origin based of an infected from the spore mod
Herobrine Prime
Adds a herobrine boss with attacks based on minos prime from ultrakill
Entities and Titans
A mods that contains dozens of mobs that also include some bosses that would make minecraft more challenging