Minecraft Java 1.21 Mods
Browse 131 free mods for Minecraft Java 1.21 — popular picks include Mechanical suffering, Server Hardcore, MobPVP // CANCELLED.
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Mechanical suffering
Modpack with little bit of everything. Create, BetterEnd and BetterNether, Ice & Fire, Born in Chaos, Cataclysm , Mowzies mobs and lot more.
Server Hardcore
A simple mod that makes a new world every time a player dies in hardcore.
MobPVP // CANCELLED
MobPVP transforms your Minecraft survival experience by assigning levels to every living creature in the game. Based on these levels, mobs gain different abilities, attributes, and loot chances, creating a more challenging and rewarding combat system.
The Ultimate Create Experience For Builders
Dive into the ultimate Create Modpack, featuring addons that expand mechanical possibilities for building, automating, and innovating in both Survival and Creative modes.
Calcite Crafting Recipes
Vanilla/survival friendly ways of obtaining calcite by crafting and smelting.

Hardcore Enforcer
Forces hardcore world generation and disables cheats - Completly configurable.
TechMeg-Endless Survival-
TechMeg – Endless Survival is a challenging survival modpack that expands vanilla gameplay with progression tweaks, multiplayer-friendly mechanics, and enhanced exploration.
Petroglyph
This Datapack changes deserts and desert survival. It adds hydration, changes World generation and adds unique artifacts. Survive in the desert!
Help Me Hardcore
Help Me Hardcore Adds All Kinds of Extra Challenges from Community Ideas to Full-Themed Updates for Your Hardcore Worlds or Even Hardcore SMP Servers!

BloodInfection999
Delve into a world ravaged by a terrifying blood infection, where once-peaceful creatures are corrupted and your own survival is constantly under threat.
Mattutomon - MTT
Minecraft modpack focused on Pixelmon and other mods, offering a survival and exploration experience that combines Pokémon adventure with classic Minecraft mechanics.
Bladebound
Bladebound adds named swords with unique effects, lore, and world-generated shrines designed for natural survival progression.
SQBubliks: Restart
A reboot of vanilla survival, but with mods, travel, new structures, lots of mechanics, and magic!
Untitled Modpack - Hard Survival
Untitled Modpack enhances survival with immersive world generation, fluid movement mechanics and automation.
MoreRealisticSurvival999
MoreRealisticSurvival999 brings immersive realism to Minecraft survival by dynamically managing temperature, thirst, crop rot, torch burnout, and natural plant growth for a truly challenging and engaging experience.
Amethyst SkyBlock
This datapack brings you into hardest possible vanilla skyblock ever. Try to survive on one floating amethyst!
Cold Biomes Only
Challenge yourself by making the world only cold biomes. Great for a hardcore winter challenge!
Poseidon - Underwater Survival
Shipwrecked and stranded underwater. Breathe, build, and survive in a fully aquatic island world.
SurvivalReborn
Survival Reborn enhances Minecraft survival with dynamic terrain, new biomes, and unique mobs, offering fresh challenges and gameplay mechanics. Explore, craft, and survive in a world full of adventure, ancient secrets, and powerful items!
PermaEfe Extreme Survival
PermaEfe is a Minecraft datapack that increases the difficulty progressively for 30 days, with mechanics such as permanent death, boosted mobs and unique craftables. Ideal to play with friends and test your survival.
MeowFurniture
Create survival-friendly custom blocks, ores, multiblocks, crafting, and commands, with a web block generator.
Far Frozen
Will you be able to survive and escape the frosty, Far Frozen landscape? All cold biomes. Hard early game survival.
Soulbound SMP
Soulbound Hardcore SMP with Souls & Hearts
Rasterpiece Theater
A mod that adds the FNaF franchise to Minecraft. This mod is more survival-based than creative.
LogicGates
Forget about giant Redstone logic gates. All logic gates in one block!
MZZ's Desert Survival
Makes the whole world a desert; overhauls Minecraft's crafting recipes to provide unique progression and highlight Minecraft's overlooked features.
TenLives
TenLives is a Minecraft plugin designed to add an extra layer of challenge and excitement to your survival gameplay
Artilide
Artilide is a modpack that attempts to transform Minecraft's balancing and base mechanics to keep survival aspects for late game, along with overhauling exploration as a whole.
Still Alive !
Re-balance of the health system, better early game, making survival harder but not absurdly hardcore.
Half Heart Only?
Survival challenge where players only have half a heart.
MIA RPG Client
Welcome to the ultimate Minecraft RPG experience! Our server combines classic survival gameplay with deep RPG mechanics, challenging dungeons, and endless exploration opportunities.
Mia RPG Server
Welcome to the ultimate Minecraft RPG experience! Our server combines classic survival gameplay with deep RPG mechanics, challenging dungeons, and endless exploration opportunities.
Better Reimagined
Enjoy this survival experience in an epic and immersive adventure. It introduces new mechanics that enrich gameplay with dynamic combat, while vibrant new biomes and impressive structures encourage exploration with unique and challenging mobs
Against the Wild: Realistic Survival
Against the Wild is an immersive realism mod that transforms Minecraft survival into something that actually feels like fighting to stay alive. No magic shortcuts, no easy starts. The world is harsh, unforgiving, and beautiful just like the real wilderness
Rotwire
A Zombie Survival take on Minecraft with infested cities. Establish a radio connection with the survivors to maintain your ammunition and resource supply. Migrate from town to town as their difficulty scales with your activity within each of them.
Heartcore Mode
A Gamemode easier than Hardcore but harder than Survival. Ten Lives, lose a heart on death. Enjoy! Icon was originally made in Icons8 but then altered by me.