Minecraft Java 1.21 Mods
Browse 57 free mods for Minecraft Java 1.21 — popular picks include Ultimate Lucky Oneblock, Rival Trespassers, Vagrant Saga - RPG Survival Adventure.
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Ultimate Lucky Oneblock
Lucky block Oneblock, enhanced with automation, machines, gear, bosses, and QoL features.
Rival Trespassers
Fight survivalist minibosses in structures - just like you!
Vagrant Saga - RPG Survival Adventure
RPG NeoForge modpack, Vampires, Magic, Quests, Skills, Bosses, 15 Dimensions, MMO server, Latest version 1.21+ RPG Adventure
Prison Escape - Beginnings
Escape the Prison with a questing tech centered adventure, including tonnes of custom recipes & juicy loot! (Skyblock/Stoneblock/Tech/Quest/RPG/Gated Loot & Bosses)
Our Story - Earth
A large exploration and survival modpack with custom quests, world generation, dungeons, bosses, building, farming, and multiplayer adventure.
Hords
Hords is a survival mod for Minecraft that spawns dangerous mob hordes led by powerful bosses.
Herobrine Boss Fight
Adds Herobrine Boss Fight to Survival Minecraft. Only for really skilled players.
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.
Compound V: Survival Crafting & Chest_Loot Addon
Compound V: Survival Crafting & Exploration Addon adds Overworld crafting recipes and balanced structure loot tables for Temp V, Permanent Compound V, and Anti-V serums, removing the need for endgame boss fights.
Cobblemon + Create - Pokemon meets Industrial Revolution!
A hardcore, expert-level modpack fusing Cobblemon, Create, and Cataclysm into one inseparable system | Custom Recipes | Complex Progression | All Pokémon | Mega Evolutions | Gyms & Badges | Boss Fights | Everything Integrated!
The Titans
This Modpack add The Titans and other boss and titans mod!
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.
Cobblemon Sky Adventure
Cobblemon but you are on Skyblock. Explore dimensions, fight trainers, fight boss. Create your own adventure !
Terra by Sexy Crew
Explore stunning landscapes, level up your player and have fun while fighting strong bosses or catching cobblemons
DLCraft!
CHALLENGE SIX TIERS OF LEGENDARY BOSSES
DragonForge
Dragon Forge is a RPG–survival with skill-gated gear, Create-powered industry, mythic bosses & dungeons, and lush worldgen. 200+ content mods + 90+ perf/QoL. Built for multiplayer on MysticHorizonsMC.
Dungeonia - The rpg modpack exploration withe dungon perspective
explore Dungeonia: an immersive RPG modpack Experience hardcore 3rd person combat with barebones outline style. Master skills and gear while looting dungeons, dungon crawls, and epic bosses in this massive 3rd-person perspective fantasy adventure
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.
Deepcraft
A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.
Theosis
Plugin-ready RPG survival with loot, gems, bosses & biomes. Thesis-style modularity. Multilanguage Apotheosis-inspired
ProtoMP
The world has fallen. Manage thirst and radiation, wield modern weaponry, and engineer your survival against deadly mutants and bosses in a ruined world.
Roguelike MC
Roguelike Upgrade System offers special upgrades, item decay, boss progression, and full customization for casual or hardcore play.
Limitbreak
Minecraft transformed into a roguelite wave-survival RPG with classes, relics, bosses, and permanent progression.
Tensura Abyssal Reincarnation
Tensura Abyssal Reincarnation is a dark, cozy SMP modpack blending magic, exploration, and survival. Master spells, automate with Create, and face deadly bosses in a semi-anarchy world where freedom rules and every choice shapes your path.
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.
X Journey
Dive into TX-Journey, where survival meets adventure, all with the classic vanilla feel. Build, craft, and explore a world filled with mysteries, from daily tasks to epic boss battles. Upgrade your enchantments and uncover endless possibilities.
The Aether Survival
Here the goal is to survive starting in the Aether and work your way from defeating bosses in the aether to getting to the overworld
RealmsQuest
RealmQuest - Fabric, designed for players who love epic adventures with original dungeons, bosses, and spells. It features expanded biomes, new tools.
WildFrontierr
WildFrontier is a wilderness survival & RPG adventure modpack for Fabric 1.21.1. Explore stunning terrain, battle bosses, level up your skills, and thrive in a dangerous world solo or with friends.
Rubens Better Survival
Overhauls Minecraft to a better Game! This Modpack overhauls the Visuals, improves Gameplay and adds new Structures and bosses!
Harrowing Hells (Data Pack)
[NOW SURVIVAL SUMMONABLE] Adds the Cinderscourge, a highly developed boss entity with a diverse arsenal of attacks at its disposal. Usable in mob battles.
Be happyy
🎮 Be Happy is a NeoForge 1.21.1 modpack for long-term survival with friends or solo. Build flying machines with Create Aeronautics, automate factories with Mekanism & AE2, fight Cataclysm bosses, explore new biomes & YUNG's dungeons — not a vanilla pack!
HARD NEW
A technologically advanced game with a focus on realism! Shaders, automation, smart NPCs, hundreds of animals, and hardcore bosses. Explore this vibrant world with your friends using the built-in voice chat.
The Fallen King - Ultimate Survival Challenge
Extreme Bosses, Ninja Enderman AI & The Fallen King Dragon Phase.
Kult Craft Core Data Pack (1.21.1, 1.20.1) – Fight Custom Bosses Without a Long
Kult Craft Core Data Pack extends the Attribute Setter Mod by balancing health and damage numbers for several other mods. The pack lowers the health of specific boss-like monsters so they do not take forever to defeat in regular survival gameplay. Features: Changes the health stats for specific creatures from different mods so they fit […]
Blade Addons Mod (1.21.8, 1.21.5) – Hypixel Skyblock Utility Mod
Blade Addons Mod is a utility mod for Hypixel Skyblock that fills in missing features from other mods. It provides dungeon‑focused tools, timers, counters, and quality‑of‑life improvements to enhance gameplay. Features: Adds /ba refill command for dungeon runs. Chest counter works only in boss fights. Exposure shot calculation limited to boss fights. Diana event notifier […]