Minecraft Java 1.20 Mods
Browse 788 free mods for Minecraft Java 1.20 — popular picks include The Greatest Adventure, Valiant RPG, Autcraft Adventure.
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The Greatest Adventure
This mod brings new adventures to the player with the help of many new blocks, items, mobs and much more. Explore multiple dimensions, loot buildings, defeat bosses!
Valiant RPG
A Faithful Adventure RPG Experience. | 500+ Quests, Including Lore & Progression. | Progress Through Custom-Made Skill Trees. | Defeat 30+ Powerful Bosses. | Mob Scaling Difficulty. | Temperature & Thirst.
Autcraft Adventure
Welcome to a world where magic thrives, ancient ruins whisper forgotten secrets, and powerful bosses guard unimaginable treasures. AutCraft Adventure invites players to embark on a thrilling journey through a land shaped by fantasy, mystery, and challenge.
Boss Companions!
Adds pets from the bosses you fight.
Wands & Wizardry
Bringing Noita's spell system to Minecraft with fully modular wands, over 60 spells, a new boss fight and more!
THE SKELETON BOSSES | CUSTOM MOBS [1.20 - 1.21.1]
Incorporate custom bosses with custom rewards, create a new boss dynamic
OHPS10 Boss
Adds the boss "Obama Harry Potter Sonic 10"
Skibidi Boss
Adds a new boss to your game
Ancient Aether - Boss Music Addon
Uses the Aether II mini-boss theme to play as the Mutated Aechor Plant's boss track
Mocha's Complicated Dungeon
Adds a difficult randomly generated linear dungeon with unique enemies and bosses from Mocha's Complicated Bosses

Dimension Update
The mod adds new bosses and op wepoins
all the horror
This modpack is a combination of all the mods 9, horror mods like cave dweller and the man from the fog. With new mobs from alex mobs and legendary creatures and bosses. While also adding new weapons from scorched guns 2 to add new weaponry for fighting,
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.
Formula 1 Bosses
Adds Formula 1 Drivers as mini-bosses in Minecraft!
ZKQ – Zombie King Quest (Boss Fight + Structures + Progression)
Adds a powerful Zombie King boss, custom structures, Frux ore progression, and epic weapons for adventure-focused survival gameplay.
Worlds of Mobs
A world exploration RPG with lots of dungeons and bosses
Boss more
This mod includes bosses, new dimensions, unique items and more. Currently, we are in the Alpha phase, but we will be making updates.
Schools of Magic: Reforged
A D&D-inspired magic mod featuring customizable spellcasting, advanced brewing & alchemy, powerful bosses, and a magical world.
Vizer
New strong bosses,weapons and much more!
More And Ore
More And Ore Contains an increasing amount of Content, Beginning with Ores and Items as well as Various Armors, Tools and Weapons, as well as Exponential amounts of New Features, Mobs, Bosses and Difficulty increasing Modifications!

Calamity
Calamity is an expansive overhaul project that introduces challenging new bosses, unique mechanics, and a rich layer of lore to the core experience.
Hacker boss
1 mod, 1 boss, 1 challenge
GahoodRPG
Adds RPG elements to minecraft which includes classes, armor, weapons, bosses, and more.
Mlp Boss
This mod adds powerful bosses from Mythical Creatures to Minecraft
BigBrainCrafts
New Biomes, Mobs and Bosses / more Vanilla+ and Magic
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.
The Dulling
A Cosmic Horror Story with Bosses, Dimensions, Magic, and more!
The Dulling - Encore
Adds an eldritch invasion, dimensions, bosses and more! Maintained fork of the The Dulling infection mod.
DarkenDepths
A Mod extending the Deep Dark and creating a new biome adds a new boss and other cool items
Valor's Legacy
Valor's Legacy thrusts you into a medieval fantasy realm with epic bosses, magic, and diverse biomes. Battle monsters, solve puzzles, and complete NPC quests for rewards. Discover hidden secrets and explore rich, mythical dimensions.
Fragmented
🌙 A terrifying hostile mob that spawns at night — its separated body parts hunt players one by one. 🩸 Collect all the parts and craft a Boss Spawn Egg to face its ultimate form!
Ultris: Boss Expansion — Mob Battle Patch
An addon data pack for Ultris: Boss Expansion that enables non-player entity aggro on its bosses among other tweaks tailoring to mob battle functionality.
Bossmode
Bossmode is the difficulty above hardcore that turns every mob into a boss fight, including passive mobs. Can you survive?
[MobArena Addon] HavenArena - Extra Customizable Features
Add extra customizable features to your MobArenas, including new boss abilities and monster glow.
Boss Items
A Mod That Adds New Drops For Each Boss Mob (Ender Dragon, Elder Guardian, Wither, Warden)