Minecraft Java 1.21 Mods
Browse 117 free mods for Minecraft Java 1.21 — popular picks include Mystborn Horizons, Diary of an 8-Bit Warrior, Nice Blockhead Mobs.
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Mystborn Horizons
A progression mod to add more ores, mobs, bosses and structures.
Diary of an 8-Bit Warrior
Experience Aetheria like a Terrarian! Complete quests, kill bosses, and level up your skills! Maybe you'll even meet Runt and his friends…
Nice Blockhead Mobs
Adds cute, little Mobs (and 1 new Boss) made out of Miniblocks. No Ressource Pack required.
Undermagic II
Progression expansion featuring flashy weapons, structures, and a challenging boss fight
PixelColonies: Arcane Journeys
Dimension and Exploration Modpack with very hard Bosses and other Creatures, as well as many diffrent dimensions and Quests
ReniDrags Molten Mayhem!
Explore the new biome that brings dungeons, dimensions, a custom boss, cool new custom items and of new tools!! Get on this mod baby!! Its super duper cool (source trust me bro)
TYAZVR Spider-Man
This mod is a Spiderman mob at add new things to do Bosses to fight this and is not the best but try
Tower Of Gods
This datapack adds the Tower of Gods (inspired from zelda wind waker) along with a custom boss: Gohdan (from zelda wind waker). No resource pack
RogueCraft Plus
An addon to the RogueCraft datapack! Adds new abilities, structures and a boss!
Deepcraft
A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.
Headaches!
Headaches! is a Minecraft mod that adds new structures inhabited by the most absurd and unconventional mini-bosses—all characterized by having disproportionately large heads. Discover a challenging new adventure!
SC Final Adventure - Machines
Hunt bosses, farm their essence through Easy Mob Farm and Create New Age, and craft your way to the End in a guided 1.21.1 factory-and-adventure pack.
Norious
Bored of not Having enough strong bosses to fight? Ever Wanted To become a God and fight Demons In Minecraft? This is the mod for you.
Summoner Mod
A mod that adds 4 bosses and 4 structures. Almost no dependencies!
koper_mod
A chaotic Minecraft mod with unique bosses, broken armor sets, and a corrupted dimension a little unbalanced but fun as hell.
Unknown Echoes
adventure Mod centered around exploration, puzzle-solving, boss battles, and progressive ability growth.
TCC - Skyzone
An expert-mode 1.21.1 NeoForge skyblock pack with tech, automation, and magic (Mekanism, Create, Oritech, Ars Nouveau), exploration dimensions, and scaled-up Apotheosis difficulty for tougher mobs and bosses.
Techless
A Mod that adds 3 new bosses with unique phases Fight them to craft Legendary weapons in this Vanilla+ progression mod Made using Mcreator
Minecraft-The CATASTROPHE mod
Adds new bosses to the base game, and overhauls the progression
Quest Dimensions & Mob Hunts
A Minecraft quest datapack focused on mob hunting, dimensions, and milestone-based rewards. Progress through separate quests such as Overworld, Nether, End, Boss, Zombies, Undead, Arthropods, Animals, and Total Hostiles. Earn bonus experience
Hyrinity (Legacy)
An overall content mod adding progression, bosses, dimensions and more!
Labyrythm
Labyrythm is a Neoforge mod for Minecraft 1.21.1 that challenges players with a procedurally generated, sound-reactive maze and a unique boss encounter.
Grandia Dungeons
A dark fantasy roguelike dungeon adventure with classes, bosses, cursed loot, magic, traders and procedural floors.
Boss Update
This mod adds three new distinct bosses with custom drops and powers. (also available in multiplayer worlds.)
Deepslate Titan Boss
A datapack that adds a new boss : the Deepslate Titan
Breeze Island
Adds a sky island with loot and a boss fight.
More Ore -
Mod that adds more content and more ore to minecraft. New content includes bosses, dimensions, weapons.
World's Whisper
Conquer shape-shifting bosses and craft elemental gear in a realm ruled by four mystical seasons.
SuperRH bosses
This mod adds some uh cool stuff like a very strong boss and a total red biome
UHC+
A data pack that adds in UHC, but with additional features like augments, special items/equipment, and bosses that spawn in during the game.
In the Journeys
The mods expand Minecraft further with new ores, mobs, biomes, dungeons, bosses, and magic to discover.
bt stipram kokam
There's another world and a boss. There are enemies. Beauty. Everything is there. There are all kinds of furnaces. There are world settings. There are tools for armor and food.
Trails of Forsaken Lands
Adventures, a lot of bosses, and crystals!
Fortune Craft Modpack
The Official Modpack for the FortuneCraft Modded Server. Explore Minecraft in a new light with a heavy focus on Create, with the addition of new Biomes, Blocks, Mobs and Bosses!
Gnomeland
Gnomes with different types such as bosses and guards and structures.
MagicAirdrops
Replace boring airdrops with new events with various rewards and bosses.