Minecraft Java 1.21 Mods
Browse 23 free mods for Minecraft Java 1.21 — popular picks include ApocalypseX, Brutal Nightmare : Insane Difficult, Zombie Survival Mod (ZSM).
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ApocalypseX
This mod adds a lot of new things! New gears. Dimensions. Bosses
Brutal Nightmare : Insane Difficult
Minecraft too easy? Try this mods with nearly 40 modifiers - settings new mini bosses, which made minecraft become hard & insane. Enhanced hostile mobs' AI & Angry passive mob. Zombie place/break blocks. Skeleton,Spider,Creeper,Enderman.
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.
ZKQ – Zombie King Quest (Boss Fight + Structures + Progression)
Adds a powerful Zombie King boss, custom structures, Frux ore progression, and epic weapons for adventure-focused survival gameplay.
CrazyMC - A Special Apocalypse | Apocalypse with Quests!
A chaotic Minecraft adventure featuring zombie hordes, powerful bosses, firearms, magic, advanced technology, massive dungeons, and endless progression.
Electric Boogaloo
Adds a new zombie dancing boss, Electric Boogaloo with his iconic Backup Dancers from the Plants Versus Zombies Games
ZApocalypse
ZApocalypse is a Fabric mod for 1.21.1 that turns every night into a zombie wave, with elite variants, blood nights, and a Zombie Lord boss. As the apocalypse escalates, zombies evolve unique abilities while other hostile mobs retreat deep below Y=25.
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
creeper-apocalypse
Mob Replacement System ALL mobs spawn as Creepers! with exceptions Exceptions that remain normal Blazes you still need blaze rods! Villagers or trading Ender Dragon final boss remains Iron Golem
GiantZombie
summon and battle a colossal zombie boss with customizable stats and drops!
Zombieium
Zombieium adds configurable night-time zombie waves and an optional boss encounter with a red warning beam, fiery arrival effects, and unique drops.
KVRLootChest
This plugin adds a custom chest event. There are three tiers of loot in the chests. The chest spawns within a 2000 block radius of the spawn point. To open it, you need to kill the boss (a zombie in diamond armor with a sword and 100 HP).
The Legend Returns
Herobrine has returned. Cursed structures, shadow clones, epic boss fight, and dark portals await. Survive the apocalypse.
☣ THE PLAGUE CARRIER ☣ - Epic Mutating Zombie Boss
A twisted titan of decay that spreads plague and devastation across the land
Plants vs. Zombies Modpack (1.21.1) – Playing in Minecraft
Plants vs. Zombies Modpack is a recreation of the original "Plants Vs. Zombies" game inside of Minecraft using the Utility Engine. Features: Has 10 levels including: Bowling minigames Conveyor bosses 8 plants 5 zombies Almanac Custom naming Level select features Decompiled resource pack for easy modding Screenshots: Plants vs. Zombies Modpack Download Links For Minecraft […]
DeadCycle
DeadCycle is a hardcore day-night survival plugin for Paper/Spigot 1.21+, with unique kits, skill progression, zombie waves, mini-bosses, economy, base defense, and high replayability.
Create Aero-craft (Hardcore++)
Its a modpack with the all new Create: Aeronautics mod and has a LOT of hard mods like bosses, zombies, thirst, and more! come join!
Army of Shadows
Master the Art of Necromancy! Capture the souls of any mob or boss—including those from other mods—and command an undead army or harness their dark power for yourself.
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 […]
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 […]
Remnant Bosses Mod (1.21.8, 1.20.1) – Fight a Brutal Skeletal Ninja
Remnant Bosses Mod adds a tough new fight to your game. It brings a powerful undead master called the Ossukage to test your combat skills. This mod gives you a hard challenge with custom animations, special attacks, and intense music. You will also find dangerous mutant rats hiding in dark caves and ruins before you […]
Zombie Improvements Mod (26.2, 1.21.1) – Upgrades Zombie Leader Mechanics
Zombie Improvements Mod changes how zombie leaders and their helpers work in the game. It adds new visual clues and sounds so you can easily spot the boss zombie in a group. It also fixes a few bugs with how zombies call for backup during a fight. Features: Clear Leader Zombies: The mod adds a […]
Mebahels Creatures Draugr Invasion Mod (1.21.11, 1.20.1) – Adds Nordic Undead Enemy Raids
Mebahels Creatures Draugr Invasion Mod adds a new group of undead enemies based on Nordic stories to your game. It brings different types of ancient warriors, a big boss, magic items, and new buildings to fight through. You can even start your own enemy raids to get special rewards. Features: Draugr Raid System: Kill enemies […]