Minecraft Java 1.21 Mods
Browse 519 free mods for Minecraft Java 1.21 — popular picks include Monstrosteve, Herobrine Boss Fight, Boss AI Tweaks.
Updated daily
Monstrosteve
This mod adds a goofy boss mob.
Herobrine Boss Fight
Adds Herobrine Boss Fight to Survival Minecraft. Only for really skilled players.
Boss AI Tweaks
Mob AI Tweaks but only the boss changes
Void's Titans
This Datapack will add 28 new bosses and 4 new superbosses! The Titans are nothing short of walking calamities.
The Old LMB
A Mod that adds new Bosses, more angry mobs and some animals from our planet
Bossbar Expansion
This data pack/Mod add bossbar to minibosses in the game like Warden, Elder Guardian and Evoker.
Ea Nasir's Items and Bosses Pack
Introduces new bosses, items, and more!
Dimensions & Dungeons
Explore a new world full of undiscovered possibilities, with new dimensions, bosses, mobs and structures.
Blue Depths
This is a datapack that improves the Minecraft ocean and river ecosystem by adding new mobs, blocks, and a brand new ocean boss. The new sea creatures include Orcas, Sharks, Sturgeons, Jellyfish, Catfish, and Tuna
Relics Of The Fallen Gods
Relics Of The Fallen Bosses Adds custom Legendary Items that have a chance to drop when you kill a boss Items include: The wither Hammer Warden Chestplate and Ender Dragon Bow
Aether Plus 2
💀 Conquer Bosses • 🐦Flying Pets • ☁️ Sky Is The Limit • ✨ Acquire Gear • 💎 Shaders| ✅ Play Now With Friends
Boss Companions!
Adds pets from the bosses you fight.
Manifestation of the souls
Manifest your soul as a stand, kill bosses, follow quest lines and find structures
Daily Boss X Mowzie's Mob
Compat Daily Boss with Mowzie Mob
Epic Bosses
A mod for epic bosses in minecraft that adds a lot of unique content.
KinglyBosses
KinglyBosses is a Minecraft plugin for managing custom bosses. It allows summoning powerful bosses, generating custom items, and enabling player spectating. It also offers features like boss lists, spawn zone management, and easy configuration reloading.
Hazelia
Hazelia dimension, creatures, and boss!
KamenRiderBossYOUandME
Henshin! Step into this heated conflict. In “The Final Boss, You and Me”, it's like the fateful duel of Kamen Riders. The shining belt is the symbol of glory. Amid the intertwining of light and shadow, only the strongest can break through the darkness
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 - Friends & Foes Compat
Adds Friends & Foes compatibility to the Boss Checklist mod!
Sol's Title System
A rich title progression system. Players earn titles by completing in-game achievements — slaying mobs, surviving, or defeating powerful bosses. Each title displays above the player's head and in chat, and can grant unique stat buffs while equipped.
Crowncrawl
It is a mod still in development that aims to improve the vanilla experience of the game by adding new bosses and items.
Daily Boss Per Player
Makes Daily Boss cooldowns per-player instead of server-wide.
Improved Spiders
Adds 4 new types of spiders that can spawn as well as a spider queen boss that spawns in new spider den structures and many new items.
Fortitude
Gain stats upon defeating unique mobs and conquering bosses. Fully configrable/customizable.
Harsh Encounters
Adds custom strong bosses to the game.
Random Bosses
The WASD Random Bosses Datapack turns naturally spawned mobs in the world into bosses. It was inspired by an old mod that is similar in function. Bosses spawn with random power levels, random sizes, and loot based on difficulty.
Warden bossfight
Turns a player into a boss with warden and sculk-based abilities
Contoro's Ores+
This mod adds ores and new tools and armor, but with a twist. The player needs certain leveled tools to get stronger ores. This mod also adds a new dimension and a new boss.
Pirate Adventures
Pirates is a huge project for the Minecraft game in the form of a DataPack. By installing the required ResourcePack and the DataPack itself, you get a large number of new mobs, items, blocks, mechanics, and bosses.
Zombie Survival Mod (ZSM)
Survive for 10 days fighting zombies with unique abilities. As the days progress, stronger zombies spawn, culminating in a final boss. Players can craft items, build defenses, and face various challenges to stay alive.
Titans - World Bosses
Pixelmon World Boss Sidemod
Daily Boss X Legend Monsters
this datapack makes daily boss and legendary monsters compatible
All About Mobs - Creatures & Bosses & Combat
All About Mobs enriches your Minecraft experience by adding a plethora of new creatures to discover and interact with, enhancing the dynamics of each biome.
Daily Boss x Brutal Bosses
Compatibility between Daily Boss and Brutal Bosses.
LAir's Bosses
This mod adds two bosses to the game, The Spirit of the Forest and Zeus, along with a new structure: Olympus.