Minecraft Java 1.21 Mods
Browse 519 free mods for Minecraft Java 1.21 — popular picks include Evergrow, Blood Toll Pistol, Royal bosses.
Updated daily
Evergrow
A brutal high-end adventure modpack packed with tons of new mobs, bosses, weapons and dimensions – heavily optimized and balanced for powerful PCs.
Blood Toll Pistol
The Blood Toll Pistol is a cursed weapon that deals 1000 damage to mobs, less to bosses. Right-click to fire a magical bullet with effects. Each shot costs 5 hearts, 3s cooldown, 100-use durability.
Royal bosses
Adds royal bosses and other things.
Endgame Bosses
Adds new bosses to the game after the Ender Dragon is defeated.
Just All Mods - JAM
Jams is a modpack built for everybody you want bosses, cozy cooking and farming mods, new pets or tech mods? Well JAM has all of that plus more we have 1000+ quest in case you're new to mods come on and give it a try.
Paladin's Journey
A mod that adds new: bosses, ores, armor sets, weapon types, and even special legendary weapons. Made for the Paladin's SMP.
Imbossible
Minecraft bosses with the Giant Slime and Frost Titan. Featuring custom attacks, summons, and unique weapon drops.
Solsun
Add mob, boss, weapon, item and more
Snowy's Bosses
Adds new bosses
Arcane Cataclysm Unleashed Mod (1.21.11, 1.21.1) – Cast Elemental Spells
Arcane Cataclysm Unleashed Mod extends Iron's Spells 'n Spellbooks with over 50 spells, elemental grimoires, and gear tailored for tough combat encounters. It introduces the Aqua magic school to control water in battles against powerful mobs. The mod connects spellcasting mechanics with items and challenges from boss-heavy mods like Cataclysm and Born in Chaos. You […]
Beyond the Voidbound Mod (26.2, 1.21.11) – Conquer Infinite Dungeons
Beyond the Voidbound Mod adds repeatable endgame dungeons, custom boss battles, and an action RPG gear system to Minecraft. Players activate a special portal device to enter room-based chambers filled with scaling monster variants and unique loot. Custom weapons and armor come with special stat rolls that you can modify using upgrade crystals. Modifying dungeon […]
Decade of the Damned Mod (26.2, 1.21.1) – Survive a Relentless Stalker
Decade of the Damned Mod introduces a ten-phase horror boss named Hollow Steve into your world. The creature stalks your steps from the shadows, listens to your movements, and grows deadlier with every defeat. Portals offer no safety because the pursuit continues across the Nether, the End, and other dimensions. Defeating the entity across all […]
Colossal Scourge Rising Mod (1.21.11) – Battle Giant Titan Bosses
Colossal Scourge Rising Mod unleashes thirty-two colossal monster bosses across your Minecraft world. It turns standard hostile mobs into giant walking calamities with multiple combat phases, custom armor sets, and god-tier weapons. You face four tiers of destructive threats that appear after you defeat the Ender Dragon, giving endgame players a tough combat challenge. Features: […]
Abyssal Horizon Mod (1.21.11, 1.20.1) – Build Underwater Bases in an Oceanic
Abyssal Horizon Mod introduces a deep ocean dimension filled with underwater biomes, aquatic creatures, and sunken structures. This mod provides a dedicated aquatic realm where players can build underwater bases, tend submerged farms, and challenge a dangerous sea boss. It includes water-friendly items like waterproof doors, customizable chandeliers, and unique marine minerals. Features: Adds four […]
Hadopelagic Reach Mod (1.21.1, 1.20.1) – Survive Deep Ocean Depths
Hadopelagic Reach Mod transports players into a deep underwater realm filled with dark biomes, dangerous predators, and giant bosses. Players enter this aquatic world by entering a typhoon, encountering extreme water pressure, toxic zones, and hidden chasms. The mod adds tameable sea life, mountable sea creatures, rare crafting ores, and powerful combat gear tailored for […]
No Frills Mod (26.2, 1.21.11) – Hypixel QoL Toolkit
No Frills Mod offers a massive toolkit of UI tweaks, solvers, visual enhancements, and bug fixes for Hypixel Skyblock. Features: No loading screen, hidden overlays, fewer particles. Custom swing speed, disable fire overlay, clean viewmodel. Etherwarp highlight, price tooltips, rare mob alerts. Chronomatron, Ultrasequencer, Melody, Terminals, Devices. Track bosses, mobs, power, bobbers, and sea creatures. […]
Miracleforest Mod (1.21.1) – Conquer Enchanted Biomes and Forge Stardrop Gear
Miracleforest Mod introduces fresh biomes, hidden structures, and powerful gear sets to your survival world. It expands both the Overworld and the Nether with tough boss battles, unique ore types, and seven new kinds of trees. You can collect rare fruits from ancient ruins to craft special tools and take down dangerous monsters. Features: Biomes […]
Legendary Spellbooks Mod (1.21.1, 1.20.1) – Cast Deadly Boss Magic
Legendary Spellbooks Mod adds monster abilities from Legendary Monsters into Iron's Spells'n Spellbooks. It turns hostile boss attacks and monster skills into craftable spells that you can cast from spellbooks and scrolls. The mod introduces a brand new magic school alongside many elemental spells across existing schools. You can now wield the same magic that […]
Dragon Priest Mod (1.21.1, 1.20.1) – Raid Nordic Crypts and Claim Legendary
Dragon Priest Mod brings the iconic dragon priest masks, weapons, and dungeons from The Elder Scrolls into Minecraft. You can explore ancient Nordic ruins, fight undead Draugr lurking in cold biomes, and face powerful boss monsters. The mod adds a unique time-travel dimension called the Past, where you find the Dragon Forge to craft custom […]
Hazbin Hotel + Helluva Boss Pack Resource Pack (1.21.11)
Hazbin Hotel + Helluva Boss Pack Resource Pack restyles your Minecraft world with the colorful and demonic themes of Hazbin Hotel and Helluva Boss. It swaps standard textures, creatures, and sounds for custom art inspired by the animated Hellaverse shows. From red skies to fancy hotel decorations, this pack gives every biome and build a […]
Threateningly Mobs Continued Mod (26.2, 1.21.1) – Hunt Dangerous Beasts
Threateningly Mobs Continued Mod fills your world with dangerous creatures, summoning bosses, structures, and strong gear. It populates vanilla biomes with high-health monsters that hunt livestock and challenge survival players. You can forge unique weapons, explore dungeons and altars across multiple biomes, and open a portal to an uncharted dimension. Features: Spawns hostile creatures across […]
Ruins and Towers Mod (26.2, 1.21.11) – Conquer Battle Towers and Fight Ancient
Ruins and Towers Mod populates your world with ancient structures, tall battle towers, and custom boss fights. You can climb through floors of hostile monsters to earn rare loot and special boss weapons. The mod also scatters forgotten monuments, shrines, and underground chimneys across many vanilla biomes. Features: Adds multi-floor Challenge Towers with custom boss […]
The Purgatory Mod (1.21.8, 1.20.1) – Survive Brutal Trials and Escape a Prison
The Purgatory Mod adds a punishing prison dimension where rulebreakers face dangerous survival trials. Players banished to this realm must fight hostile mobs across red sand deserts and dark obsidian depths. The only way to return to the overworld is by offering crafted keys to mysterious altars and conquering deadly boss fights. Features: Adds an […]
Gan Kura Mod (26.2, 1.21.11) – Never Miss Hypixel Skyblock Boss Spawns
Gan Kura Mod tracks area mini-bosses across different Hypixel Skyblock zones. It displays boss health, spawn timers, loot trackers, and clear beacon beams right in your world. Players can customize helpful HUD displays and mob highlight visuals during boss fights. Features: Boss Tracking Tools: Shows exact boss locations in the world with beacon beams and […]
Neo Paster Dream by LOAE_U987 Mod (1.21.1) – Battle Aerial Bosses Across Dream
Neo Paster Dream by LOAE_U987 Mod transports your world into surreal dream dimensions filled with new biomes, floating islands, and custom monsters. You can travel across four dream realms, search through ancient ruins, and gather rare crystals. This mod also adds a dodge ability to help you survive tough aerial boss battles. Features: Adds four […]
Tame Every Mob Mod (1.21.8, 1.20.1) – Turn Any Creature Into a Loyal Fighting
Tame Every Mob Mod transforms the normal pet system by letting you adopt almost any creature in the game. It allows you to build a unique team made of peaceful animals, hostile monsters, or even powerful bosses like the Ender Dragon. You can train your new companions to fight for you and give them special […]
Abyssal Corrupter Mod (1.21.1, 1.20.1) – Survive a Brutal Multi-Phase Boss
Abyssal Corrupter Mod adds a giant, terrifying boss to your world. This monster comes from the dark void and gets stronger as you fight it. You have to perform a dark ritual at a special altar to wake it up. Every stage of the battle brings new attacks and dangerous area effects that test your […]
DOOM the Titans Mod (1.21.8, 1.20.1) – Slay Giant Monster Bosses
DOOM the Titans Mod drops you into a world filled with massive, unstoppable monster bosses. It gives you overpowered armor and weapons inspired by the DOOM games so you can fight back against these giant creatures. You can wear special suits that block all damage and swing a glowing sword that deletes normal enemies in […]
Fights&Frights Mod (1.21.1, 1.20.1) – Battle Creepy New Monsters
Fights&Frights Mod fills your world with new monsters and hidden bosses. It adds creepy creatures to different biomes while keeping the classic game feel. Features: Boss Fights: Lets you summon powerful bosses using a special item called the Ominous Hex. Undead Infection: Includes a pathogen effect that starts a zombie-like pandemic if you turn it […]
Antarchy Mod (1.21.1) – Defeat Giant Bosses in Infinite Random Dimensions
Antarchy Mod brings a massive world of wild creatures and huge boss fights to your game. It adds three main new dimensions and lets you unlock infinite random worlds using special ants. You can craft powerful weapons, mine rare ores, and fight giant monsters like the flying Kraken. The mod fills your world with new […]
Broken Trees Mod (1.21.1) – Master Colorful Magic and Battle Powerful Custom
Broken Trees Mod extends Iron's Spells 'n Spellbooks with colorful magic and powerful new enemies. It changes how lightning and thunderstorm spells look in the game. This mod also brings custom bosses to fight and new flying creatures to find. You can meet special villagers who trade magical items for your adventures. It packs in […]
Apocalyptic Bosses Mod (1.21.1, 1.20.1) – Battle Massive Bosses for Overpowered
Apocalyptic Bosses Mod adds over 25 giant new enemies to your Minecraft world. It gives you a reason to craft better gear and prepare for tough fights. Along with these huge monsters, the mod brings lots of new armor sets, tools, and very strong items. You can explore your world to find these creatures and […]
Wushima Mod (1.21.8) – Survive a Foggy Desert Dimension of Pyramids and Bosses
Wushima Mod adds a foggy, atmospheric desert dimension to Minecraft. This new world is filled with vast sandy landscapes, mysterious buildings, and strange mist creatures. You can explore new structures, trade with local inhabitants, and fight powerful bosses hidden across the desert. Features: Mobs and Inhabitants: Adds strange creatures like the Vobodoin and Flaghorn that […]
Mo'Bosses Mod (1.21.1) – Fight Massive Multi-Phase Bosses That Hunt You Down
Mo'Bosses Mod drops you into epic battles against massive new monsters. It adds three powerful enemies that use smart attacks to hunt you down. These fights require movement and skill because simple tricks like fire and poison do not work. The mod gives each monster multiple phases and custom animations to make every battle feel […]
Kyurem Boss Mod (1.21.1) – Battle a Legendary Pokémon in the End Dimension
Kyurem Boss Mod replaces the Ender Dragon with a giant legendary Pokémon. This mod changes the final boss fight of the game into a massive battle against Kyurem. When you travel to the End, you face a huge monster with thousands of health points and powerful ice attacks. It even fights your own Pokémon if […]
Myths of the Sea Mod (1.21.1, 1.20.1) – Battle Mythical Sea Monsters
Myths of the Sea Mod fills your oceans and swamps with legendary sea monsters. It gives you new boss fights and rare loot to collect. You can hunt down giant creatures for special materials or find peaceful animals to ride across the water. Features: Tameable Mounts: You can feed raw fish to a Hippocampus to […]