Minecraft Java 1.21 Mods
Browse 255 free mods for Minecraft Java 1.21 — popular picks include Project Obscura, Explorer´s & Marriage, Catch, Create, Conquer.
Updated daily
Project Obscura
Start Your Ultimate Exploration into an Adventure-Packed Modpack | Epic Dimensions & Massive Dungeons | Challenging Bosses | Stable Long-Term Multiplayer | Cozy Building & some Create Automation
Explorer´s & Marriage
A light modpack with structures, bosses and the chance to have a happy family
Catch, Create, Conquer
The Ultimate Cobblemon RPG! Gyms 1-8, 20+ Bosses, All Megas from Z-A, 1000+ Quests, and Gambling!!
Nice Blockhead Mobs
Adds cute, little Mobs (and 1 new Boss) made out of Miniblocks. No Ressource Pack required.
DragonForge
Dragon Forge is a RPG–survival with skill-gated gear, Create-powered industry, mythic bosses & dungeons, and lush worldgen. 200+ content mods + 90+ perf/QoL. Built for multiplayer on MysticHorizonsMC.
Kurts FEN Community Pack
A modpack built for my Community and everyone else that enjoys a Tech and Magic heavy world filled with Dungeons and Bosses that need to be slain.

Undermagic II
Progression expansion featuring flashy weapons, structures, and a challenging boss fight
Dungeonia - The rpg modpack exploration withe dungon perspective
explore Dungeonia: an immersive RPG modpack Experience hardcore 3rd person combat with barebones outline style. Master skills and gear while looting dungeons, dungon crawls, and epic bosses in this massive 3rd-person perspective fantasy adventure
PixelColonies: Arcane Journeys
Dimension and Exploration Modpack with very hard Bosses and other Creatures, as well as many diffrent dimensions and Quests
Voiduh x Cobblemon
A combination of Exploration, Bosses, and Cobblemon
Inclusive+
Explore the world, Build a Base, Fight Bosses, Raid Dungeons do what you feel like and enjoy the adventure how you want!
Eclipse Of Arcanum
you are in a new world, you only have your imagination, the goal is to defeat all the bosses
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)
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
Castle and Farm
Farm and bossfight
Tower Of Gods
This datapack adds the Tower of Gods (inspired from zelda wind waker) along with a custom boss: Gohdan (from zelda wind waker). No resource pack
RogueCraft Plus
An addon to the RogueCraft datapack! Adds new abilities, structures and a boss!
Deepcraft
A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.
Iron Islands
Adds 6 different dimensions and 4 bosses.
CrisisCraft
This mod pack features Magic, Battles, Bosses, and a new immersive gameplay experience.
SC Final Adventure
Challenge countless bosses while grinding for god-like gear and dive into brutal endgame gateway bossrush
Cobblemon Dark
A Cobblemon modpack, featuring Create, Create Aeronautics, exploration, trainers, bosses and more.
ProtoMP
The world has fallen. Manage thirst and radiation, wield modern weaponry, and engineer your survival against deadly mutants and bosses in a ruined world.
Endshards
A Minecraft Mod expanding the endgame with 3 new armor sets, a new dimension, and a new boss!
Prism Drift
Balanced without magic and guns, adventure filled with loads of dimensions and various bosses
tomocraft
A Vanilla+ experience with subtle enhancements. Improved animations, better terrain, new structures, QoL tweaks, a minimap, and even a few custom bosses. Perfect for players who love vanilla Minecraft but want a smoother, richer, and slightly expanded adve
Mythic Horizons
"Mythic Horizons" is a carefully curated Vanilla+ modpack that elevates your Minecraft experience with quality-of-life improvements, stunning new biomes, powerful bosses, and hidden structures—while staying true to the essence of the game. Embark o
We The Horsemen
We The Horsemen – A modded Minecraft experience focused on economy, automation, and adventure. Build with Create mod, trade in a player-driven economy, and conquer bosses across dimensions. Hard mode, no easy teleportation—logistics and teamwork matter!
Vanilla Over The Top
This project adds multiple vanilla+ mods which add: An expansion to illagers, a much bigger and taller nether with new structures and bosses, a new way to get to the end, along with the end being reworked and also minecraft dungeons styled enchanting.
Tensura Abyssal Reincarnation
Tensura Abyssal Reincarnation is a dark, cozy SMP modpack blending magic, exploration, and survival. Master spells, automate with Create, and face deadly bosses in a semi-anarchy world where freedom rules and every choice shapes your path.
All The Maus 1
An epic adventure awaits with many bosses, dimensions and biomes!
Enigmatica 10 - Bosses Unleashed
This modpack adds more bosses to the Enigmatica 10 modpack
Luminae
A Steampunk Fantasy Exploration with over 7+ dimensions with bosses and legendary loot
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!
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.
Super Duper Modern Vanilla Plus
Large modpack that completely changes experience revamping world generation, adding more bosses, food, tools and still makes the game feel vanilla-like!