Fabric Mods for Minecraft 1.20
Browse 38 free Fabric mods for Minecraft 1.20 — popular picks include Brutal Bosses - Custom Bosses, Marium's Soulslike Weaponry, Pumpkillager's Quest.
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Brutal Bosses - Custom Bosses
Adds 29+ Bosses to dungeons and structures. Allows custom boss creation through datapacks
Marium's Soulslike Weaponry
New bosses and legendary weapons!
Pumpkillager's Quest
🎃 SpookyJam 2022: Help out the Pumpkillager! With custom encounters, rewards and a boss fight you'll get immersed in the story. Spawn him by breaking a pumpkin in this spooky scary Halloween style mod!
DarkBosses - RPG Bosses Advancements
RPG boss summoning information and grants extra experience for defeating bosses
Sleepy Hollows
Darkness falls, a boss to dread, armor strong - don’t lose your head!
Zenith Renewed
Fabric port of Apotheosis. Overhauls enchanting, spawners, bosses, and adds powerful weapon affixes!
ANARCHY Minibosses (RPG Series Plus)
Rogue Exile inspired Faction mod!
Mebahel's Creatures - Draugr Invasion
This mod introduces a full bestiary of Draugrs inspired by Skyrim, a boss with advanced AI, powerful magical items, shared multiplayer chests, new structures, and a raid system that turns the player into the hunted.
[Fabric] Progressive Bosses
Progressive Bosses! A mod that makes Wither and Ender Dragon harder each time a new one is fought. Also makes the Elder Guardian's fight harder.
Wizard Tower
Adds a Wizard Tower along with a new wizard mob mini boss
Slayer's Beasts
Explore new structures and biomes to face off against beasts and bosses on the surface, or in treacherous dungeons.
Projectile Tweaks
add Projectile Protection to bosses/mobs
DarkBosses
Shows boss summoning information and grants extra xp for defeating bosses
Chrono Dawn
Adds Chrono Dawn, a time-themed dimension with custom portals, boss battles, and time-manipulating artifacts. Supports Fabric & NeoForge.
ANARCHY RPG - Bosses and Trials
Rogue Exile inspired Faction mod!
Best Fabric+ Minecraft
A Vanilla+ stye pack. ✅More mobs ✅More Structures ✅Quests ✅Bosses ✅Quality Of life Changes.
God of War Ragnarok
GOW Themed mod that adds many weapons, bosses, and more!
Gateway of Doom
Throw a Devil Eye to open a configurable combat gateway. Survive random or fixed waves, bosses and timed challenges for rewards—or suffer debuffs. Includes auto gateways, custom mobs, profiles, admin menus, commands, diagnostics, plus a stable add-on API.
Shuumatsu no Valkyrie: Project Ragnarok
This mod is based off the manga and anime Shuumatsu no Valkyrie: Record of Ragnarok. It has skills, weapons, enchantments, transformations, races, abilities, dimensions. biomes, structures, bosses, mobs, stats, and most importantly, BUDDA
Moonstruck Phantasm
Adds the Moonstruck Apparition, a highly developed boss with fleshed-out attack patterns to your game.
Strange Aeons: Sword and Sorcery
A dark-fantasy survival RPG where you become the monster—or hunt it—while earning power through cursed dimensions, ancient dungeons, and brutal bosses.
Harrowing Hells
[NOW SURVIVAL SUMMONABLE] Adds the Cinderscourge, a highly developed boss entity with a diverse arsenal of attacks at its disposal. Usable in mob battles.
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.
BLACKSOULS II
A hardcore dark-fantasy RPG mod with custom stats, skills, bosses, souls, weapons, accessories, and brutal combat mechanics.
Summoner Mod
A mod that adds 4 bosses and 4 structures. Almost no dependencies!

Skillbound-RPG
Skillbound transforms Minecraft into a classic RPG with level-based skills, improved combat progression, magic, prayers, Slayer tasks, bosses, new equipment, and rewarding unlocks as you advance from levels 1–99.
Slayer's Beasts Mod (1.21.4, 1.20.1) – Diverse Mobs and Bosses
Slayer's Beasts Mod is an RPG mod in development, adding a large amount of fantasy content to the game. You will have access to new biomes to explore, new blocks, various dungeons, monsters, and much more. Features: Ant colonies Praying mantis Wither spider Ambient damselflies Ents (Oak & Birch – more to come) White/Black mushrooms […]
Mob Origins Mod (1.20.2, 1.20.1) – Many Mob Themed Origins
Mob Origins Mod is an origins addon that currently adds over 10 unique origins, each with different powers and abilities. Features: Totem Chance Spiked Riptide Override Remove Mob Hostility Action on Entity Tame Action on Breed Animal Modify Attack Distance Scale Illuminate Dyeable Model Color Walk on Powdered Snow Mimic Enchant Fog Health Boss Bar […]
Wither Spawn Fix Mod (1.21.1, 1.20.1) – Overcoming Spawning Obstacles
Wither Spawn Fix Mod is designed to address the common issue of small blocks like grass, snow layers, flower pots, and carpets obstructing the spawning of the Wither boss. Features: Prevents small blocks from obstructing Wither spawning, ensuring a seamless summoning process. Makes it easier for players to spawn the Wither without needing to clear […]
World Bosses
Summon, fight, and loot epic world bosses across every dimension, with custom shrines, ritual items, raid rewards, trophies, and a final primordial boss.
Souls like Bosses Lite
This version contains all bosses and weapon drops from Souls like Bosses without any boss arenas. It can be used to let bosses spawn in own custom made structures via markers.
Nightlord Standalone
From Souls Like Bosses, only contains Nightlord Boss, Arena and Weapon Drop
Melkor Standalone
From Souls Like Bosses, only contains Melkor Boss, Arena and Weapon Drop
Soul of Cinder Standalone
From Souls Like Bosses, only contains Soul of Cinder Boss, Arena and Weapon Drop
Final Adversaries Lite
Contains she Sunflower and Lothran Boss, to be used inside modpacks or servers etc.
Abyss Watchers Standalone
From Souls Like Bosses, only contains Abyss Watchers Boss, Arena and Weapon Drop