Minecraft Java 1.21 Mods
Browse 1,183 free mods for Minecraft Java 1.21 — popular picks include Mob AI Tweaks, Boss Ultimatum (Modpack Utils Series), P1nero's Primal Arena Dimension.
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Mob AI Tweaks
Tweaks certain mob AIs, major or minor. Reworks the Wither and Ender Dragon boss fights!
Boss Ultimatum (Modpack Utils Series)
Heal bosses when players die, or remove them!
P1nero's Primal Arena Dimension
Add a new dimension for boss fight.
Twilight Tweaks
Adds a very configurable final boss among other config options.
Boss Refreshed
Minecraft's Bosses with a Refreshed Take!
Epic Paladins
new powerful Armors and Tools with custom 3D-models, bosses and more...
Incendium Biomes Only
Removes structures, items, mobs and bosses from Incendium, leaving only the biomes and terrain.
Formidulus
Adds a Challenging Soulslike Boss
Boss Rifts
A long journey and and a difficult fight, an easy path home.
Tensura: Not Enough Bosses
Official Addon for Tensura: Reincarnated adding new bosses to the game for quests.
Boss Checklist
Adds a convenient list of bosses with brief information about them.
Qliphoth Awakening Dimensions
move Qliphoth Awakening bosses into dimensions.
Grave Destruction fix for "You're in Grave Danger" and "L_Ender 's Cataclysm" bosses
Literally just adds the YIGD grave tag to the files in the Cataclysm mod that are immune to the bosses, fixing the issue with the graves being destroyed
CobbleBoss
A mod that allows you to infinitely add and customize your own exclusive Bosses in the Cobblemon world.
Deus Ex Machina: Reborn
configurable difficulty aid. Gain stacking resistance and strength against specific bosses every time you fall in battle.
Remnant Bosses
Face the deadliest bosses ever forged combat, fights, and chaos await!
ANARCHY Minibosses (RPG Series Plus)
Rogue Exile inspired Faction mod!
Raids:Enhanced
Adds several mini-bosses to raids
Withering Heights: Revamped Wither
Turning the Wither into something worth calling a boss.
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.
Advent Of Ascension
An all-in-one RPG mod with new skills, weapons, armour, mobs, bosses, dimensions, and more!
Mini-boss Boss Bars
Adds boss bars to different mini-bosses (or bosses that lack their own) from numerous different Minecraft mods, including vanilla's Elder Guardian and Warden.
Loot Integrations: Ice and Fire
Adds better loot to Ice and Fire Structures and Bosses, including modded loot
DivineRPG
8 New Dimensions ♦ 115+ New Mobs/Bosses ♦ Hundreds of New Blocks and Items ♦ Unique Weapons and Armor
Cobblemon Ultra Wormholes
Server Raid-like Ultra Wormhole events that spawn boss Ultra Beasts for players to battle and catch.
Terra Entity
A mod encompasses numerous Terraria monsters and bosses, and constitutes one of the submodules integrated within the larger mod, Confluence.
雫拔刀剑
A SlashBlade mod contains multiple powerful katanas, including one exceptionally strong blade, another that plays sound effects when releasing its SA skill, and yet another capable of instantly killing most powerful bosses.
Roguecraft
A game changing data pack that aims to turn Minecraft into a Roguelite game, including new mechanics, a new final boss, upgrades, abilities and way more
Wizard Tower
Adds a Wizard Tower along with a new wizard mob mini boss
simple boss damage cap
mod adds damage cap for bosses
Ultimate Lucky Oneblock
Lucky block Oneblock, enhanced with automation, machines, gear, bosses, and QoL features.
Slayer's Beasts
Explore new structures and biomes to face off against beasts and bosses on the surface, or in treacherous dungeons.
Eternal Tales
Eternal Tales is a huge RPG story mod that adds more of new worlds, skills, quests and bosse
Bloxy's Structures
Adds more Structures to Minecraft with 4 new Bossfights!
TabTPS
Monitor your server's performance in the tab menu, boss bar, and action bar
Twilight Forest Final Boss (remake)
An additional mod to add the final boss to Twilight Forest.