Minecraft Java 1.21 Mods
Browse 261 free mods for Minecraft Java 1.21 — popular picks include Mythic Horizonss, Dungeons Content 2, Manifestation of the souls (JOJO MOD).
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Mythic Horizonss
An epic RPG & Adventure modpack for Fabric! Features overhauled combat, massive boss fights, breathtaking new biomes, and maximum FPS optimization.
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
Manifestation of the souls (JOJO MOD)
Manifest your soul as a stand, kill bosses, follow quest lines and find structures
Just Boss Swords
Just a mod that lets you borrow the powers of the different boss
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.

Adventurer's Beyond
Explore lost structures. fight dangerous bosses, and journey to the beyond in this epic mod.
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.
Daily Boss x Iron's Spells n Spellbooks
Compatibility between Daily Boss and Iron's Spells 'n Spellbooks.
KonoSuba: God's Blessing on This Wonderful World
KonoSuba, a God's blessing on this wonderful Minecraft world. Dungeons, bosses, magic and Megumin's hat, what more could you want?
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.
Sol's Indicator (Damage, Entity Health, Custom Boss Bar HUD, and more!)
A lightweight mod that gives you real-time visual feedback on every hit you land. Know exactly how much damage you're dealing, with razor-sharp accuracy right as it happens.
Daily Boss x Bosses of Mass Destruction
Compatibility between Daily Boss and Bosses of Mass Destruction.
Titans
This mod is made for those who love adventures. Adds new ore, materials, items, structures, and a boss
Herobrine Boss Fight
Adds Herobrine Boss Fight to Survival Minecraft. Only for really skilled players.
Vampires Guns Dragons an Magic .
This Mod pack is intended for low end pc and offers a variety of content from magic'' bosses' and a new dimension.
Antique Runes: Medieval RPG
Get ready for a unique Medieval RPG modpack, featuring many new armors & tools. And also features, such as leveling, bosses, quests, dungeons and many more!
BossBound Relics [Boss Drops & Weapons]
New weapons as a reward for beating bosses !
Dimensions & Dungeons
Explore a new world full of undiscovered possibilities, with new dimensions, bosses, mobs and structures.
Ea Nasir's Items and Bosses Pack
Introduces new bosses, items, and more!
Create Echoes of the Great Derailment
Rebuild the Machine Age after the Great Derailment in a steampunk Create modpack with quests, staged progression, automation, colonies, bosses, exploration, custom mechanics, powerful machines, and a world full of secrets.
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
Boss Warps
A lengthy escapade and a fierce scrimmage, followed by an effortless return home. Based on the Boss Rifts mod by jodlodi, but for the Modrinth ecosystem!
VAMPACK
a super fun and light modpack with 98 mods! You can fight with bosses, create spells, build machines and get super OP!
Aether Plus 2
💀 Conquer Bosses • 🐦Flying Pets • ☁️ Sky Is The Limit • ✨ Acquire Gear • 💎 Shaders| ✅ Play Now With Friends
Relics Of The Fallen Bosses
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
Epic Bosses
A mod for epic bosses in minecraft that adds a lot of unique content.
Cobblemon Origins Modpack
The best Cobblemon Modpack for performance, aesthetic and QOL features that you'll ever see. The server includes Raids, Ranked, Bosses, Player Gyms, Breeding, Cosmetics and so much more custom features!
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
MRPG - Massive Role Play Game
This Modpack is an Fantasy RPG Modpack with many news like Biomes Weapons Bosses Structures Leveling System and more
Relics of Ruin
A custom weapon system featuring boss-themed swords with unique abilities and mechanics.
Apotheosis Pack
The Apotheosis Pack is a comprehensive Minecraft modpack that maximizes magical progression through enhanced enchantments, epic boss battles, and deep strategic exploration.
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.