Minecraft Java 1.21 Mods
Browse 513 free mods for Minecraft Java 1.21 — popular picks include Boss Ultimatum, Boss Checklist - Mini Bosses Compat, Trial Guardians.
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Boss Ultimatum
Heal bosses when players die, or remove them!
Boss Checklist - Mini Bosses Compat
Adds Warden to the Boss Checklist with mod compat.
Trial Guardians
Procedural Trial Chambers and Bosses!
Dungeons Content 2
Dungeons Content II is a mod that adds content from a new game that has not yet been released and is a direct continuation of MCD. At the moment, only the new hostile mob Warden Boss is available
Beyond Bosses 2
This enderdragon overhaul will amaze you
Beyond Bosses
Beyond Bosses enhances the ender dragon boss introducing a new look to the end, a new ender dragon model, new boss attacks, and new boss music
✨Custom Bosses✨ A plugin to make your own mobs and Bosses✔️
A plugin to make your own mob. More features soon!
Sensei Illager
Adds dojos and a Sensei Illager mini boss to cherry grove biomes.
Daily Boss x L_Ender 's Cataclysm
Compatibility between Daily Boss and L_Ender 's Cataclysm.
Invincible: Overdrive
A Modpack base on the comic and TV show "Invincible", focusing on the mod "Invincible Conquest", bringing in challenging adventure with difficult mobs and bosses to conquer
Ascension of Ages
A curated progression pack across defined ages utilizing unique mod flavor, gated advancement, predatory revamped mob systems, tech & magic integrated by custom recipes throughout, and algorithm-designed boss placement required for progression in each age.
Realmwalker
Magical invaders roam the land - bosses, weapons, and loot!
Vaults of Abandon
Conquer the Vault, in the Vaults of Abandon - Dungeon Datapack. Battle Epic Bosses, Explore vast dungeons, and utilize powerful magic. Access over 50+ Custom Items, and battle over 20+ Custom Mobs.
Abyssal Corrupter
Face the terrifying Abyssal Corrupter — a multi-stage deep abyss boss that can be summoned via ritual altar in Minecraft 1.21.1 NeoForge.
Red Forest
Boss fights, quests, tasks, tools, and guns. Biomes and dimensions with 13+ mobs and 15+ structures and many more.
More Gear
This mod adds 15 new sets of armor and tools; four are based off of vanilla items and the rest off of new ores which can be found throughout the dimensions! There is also a new custom structure in the End dimension holding a new boss called the Shrike!
Adventurer's Beyond
Explore lost structures. fight dangerous bosses, and journey to the beyond in this epic mod.
The Nether Dungeons
I have added a dungeon that spawns at the depths of the nether which has a summing room where you have a chance to summon 3 different bosses.
Nether Sentinel
Meet the Nether Sentinel: Minecraft's new Nether boss! Face this fiery challenge and prove your bravery in an epic battle.
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.
bosses' addition
a great challenge for those who are bored from vanilla, all in vanilla.
Daily Boss x Iron's Spells n Spellbooks
Compatibility between Daily Boss and Iron's Spells 'n Spellbooks.
Slammer Boss
a mod that adds a new boss to the game
Ultimate Warden
A Datapack/Mod that enhances the Warden with a custom Dungeon, a Temple, boss battles, and more.
Confluence Infernum Music
Adds Infernum Music to Confluence: Otherworld (TerrariaCraft) bosses
The Catamount
The Catamount is a mix between an ambiance and a boss mod
Hostile Mob Better Configuration - HMBC
Hostile Mob Better Configuration gives you full control over hostile mobs in Minecraft. Attribute and behavior, or turn mobs into powerfupl boss variants to create a completely new difficulty and combat experience. Each mob can also have its own name.
Moar Bosses
Moar Bosses adds 7 types of randomly spawning bosses into your Minecraft world. Each boss has 3-5 unique and crazy magical attacks, and drop cores that can be used to craft magic wands. The bosses have custom textures using Optifine or Reselect or CET.
Hords
Hords is a survival mod for Minecraft that spawns dangerous mob hordes led by powerful bosses.
Krakentilus
Adds the Krakentilus boss, 2 unique Nautilus variants and 3 spears
Daily Boss x Bosses of Mass Destruction
Compatibility between Daily Boss and Bosses of Mass Destruction.
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.
True Boss Music
Adds much needed boss music to Minecraft's Bosses!
Nasir's Null Boss
Adds a new horrifying foe to your game...
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.