Neoforge Mods for Minecraft Java
Browse 373 free Neoforge mods for Minecraft Java — popular picks include Fortune Craft Modpack, Winter Drop Ruined, Stellar Explorer.
Step by step: How to install Minecraft Java mods & modpacks
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Fortune Craft Modpack
The Official Modpack for the FortuneCraft Modded Server. Explore Minecraft in a new light with a heavy focus on Create, with the addition of new Biomes, Blocks, Mobs and Bosses!
Winter Drop Ruined
Adds the Krakentilus boss, 2 new Nautilus variants, and some spear related content
Stellar Explorer
A sci-fi mod for 1.20.1--Use Void Exudate to power machines, build a teleporter, and explore alien worlds with resources, structures, and bosses. Still early in development.
Harry's Hostile Expansion
Adds many different hostile mobs, mechanics, structures & bosses.
Unknown Echoes
adventure Mod centered around exploration, puzzle-solving, boss battles, and progressive ability growth.

Dimension Update
The mod adds new bosses and op wepoins
ReniDrags Molten Mayhem!
Explore the new biome that brings dungeons, dimensions, a custom boss, cool new custom items and of new tools!! Get on this mod baby!! Its super duper cool (source trust me bro)
Deepcraft
A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.
OHPS10 Boss
Adds the boss "Obama Harry Potter Sonic 10"
Temples & Templates
Adding more boss encounters and tools to spice up your minecraft playthroughs!
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Bosscraft 2: Remake is an unofficial project inspired by Sthullen's famous mod for older and outdated versions of Minecraft.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.
PixelColonies: Arcane Journeys
Dimension and Exploration Modpack with very hard Bosses and other Creatures, as well as many diffrent dimensions and Quests
Vizer
New strong bosses,weapons and much more!
Ancient Aether - Boss Music Addon
Uses the Aether II mini-boss theme to play as the Mutated Aechor Plant's boss track
Dragons Catalysts
Introduces a new material called Soulite. Biomes, dimensions, mobs and bosses will be added in later stages.
Glowroot Caves: Hybrid Encounter
Makes the Glowroot Hybrid boss from Glowroot Caves encounterable in survival gameplay.
TYAZVR Spider-Man
This mod is a Spiderman mob at add new things to do Bosses to fight this and is not the best but try

Rick's Roll
Adds rick astley as a boss and a rickroll music disk.
Boss Checklist - Mob AI Tweaks Compatibility
Integrates the Ominous Phantomare boss as well as the reworked Elder Guardian and Ravager from Mob AI Tweaks as entries in the Boss Checklist mod.
Summoners
Turns ordinary mobs into mini-bosses that summon reinforcements.
Create Aeronautics: AMBUSH
A datapack-driven encounter engine. Design ambushes with custom triggers, multi-wave assaults, bosses, arrow storms, airship fleets and custom mob AI, plus optional Create Aeronautics and Create Big Cannons support.
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.
Peaceful Alternative
Blocks all hostile mob spawns (incl. spawners, bosses, summon command) and replaces hostile- & animal-kill-based recipes with peaceful alternatives in the future - full non-combat progression.
Monsters Unlimited
A challenging Minecraft mod featuring boss monsters! Starting from day ten, a powerful boss monster will appear in your world every five days.
Boss Checklist DivineRPG Addon
Adds DivineRPG bosses to Boss Checklist.
Daily Boss - More Config
Add more config for Daily Boss
Summoner Mod
A mod that adds 4 bosses and 4 structures. Almost no dependencies!
Leveled Weapons
Explore, Fight Bosses, and find extremely powerful weapons and level them up fighting mobs!
Cobblemon Boss Bars
Pokémon inspired boss bars!
The Epic Player Boss
Adds a new player like NPC boss which will give you an epic boss fight.
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.
Kings & Monsters
An adventure and progression mod featuring the Ogre Tribe, guarded outposts, escalating patrols, powerful relics, a massive fort, and a multi-stage boss fight.
Lokotess´s Adventure
The mod adds bosses, items and new mechanics.
Headaches!
Headaches! is a Minecraft mod that adds new structures inhabited by the most absurd and unconventional mini-bosses—all characterized by having disproportionately large heads. Discover a challenging new adventure!
Electric Boogaloo
Adds a new zombie dancing boss, Electric Boogaloo with his iconic Backup Dancers from the Plants Versus Zombies Games
SC Final Adventure - Machines
Hunt bosses, farm their essence through Easy Mob Farm and Create New Age, and craft your way to the End in a guided 1.21.1 factory-and-adventure pack.