Minecraft Java 1.21 Mods
Browse 17 free mods for Minecraft Java 1.21 — popular picks include Radiach, Survival Not Guaranteed, MC-Themed Powers.
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Radiach
This hardcore mod adds radiation to all biomes. From the very beginning the player will be accompanied by radiation
Survival Not Guaranteed
Dive into an expansive Minecraft modpack that blends challenging survival mechanics like temperature and thirst with extensive exploration of overhauled dungeons and new biomes, all while offering dynamic combat, magical mastery, and complex automation.
MC-Themed Powers
Adds special abilities you can unlock in survival Minecraft. Each power is based on Minecraft mobs/biomes.
Theosis
Plugin-ready RPG survival with loot, gems, bosses & biomes. Thesis-style modularity. Multilanguage Apotheosis-inspired
WaterBar999
The WaterBar plugin enhances Minecraft gameplay by implementing a thirst management system that requires players to monitor their hydration levels, collect and purify water, and adapt their survival strategies based on biome conditions.
True Nature
Realistic MC is a modpack that makes Minecraft feel real. With enhanced graphics, physics, and survival mechanics, it brings a grounded, immersive experience to your world.
Cold Biomes Only
Challenge yourself by making the world only cold biomes. Great for a hardcore winter challenge!
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!
Far Frozen
Will you be able to survive and escape the frosty, Far Frozen landscape? All cold biomes. Hard early game survival.
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

Real Temp
A realistic client-side temperature survival mod with dynamic biomes, weather, altitude, armor insulation, and seasons. Survive freezing winters, scorching summers, and extreme climates with immersive environmental mechanics.
Mastrful's Biome Wands
Adds a craftable wand to change areas to any biome. Survival-friendly and compatible with mods.
Legendary Survival Overhaul Mod (1.21.1, 1.20.1) – Temperature, Thirst, Health Overhaul
Legendary Survival Overhaul Mod is a highly configurable mod that significantly expands Minecraft’s survival mechanics. It introduces new systems such as temperature, thirst, localized body damage, and a redesigned health system to create a more immersive and challenging survival experience. Features: Temperature System A dynamic body temperature system influenced by environment factors such as biomes, […]
Grim and Bleak Mod (1.21.1, 1.20.1) – Place Where No One Lives
Grim and Bleak Mod is an ambience-focused mod that blends exploration, survival mechanics, and dark atmosphere. It introduces a shadowy dimension called Limbo, filled with hostile creatures, rare resources, and high-risk progression. Actions taken inside Limbo can also affect the Overworld. Features: New dark dimension called Limbo with unique biomes and enemies Atmosphere-focused semi-horror gameplay […]
Gigeresque Mod (1.21.1, 1.20.1) – Biomechanical Terror
Gigeresque Mod transforms Minecraft into a haunting and thrilling survival horror experience. By introducing creatures and elements inspired by H.R. Giger's iconic designs, this mod adds a layer of fear and excitement that stands out from typical gameplay. Deep underground, players can stumble upon black monolithic structures, ominous and foreboding in their design. These dungeons […]
Siscu's Survival Expansion Data Pack (1.21.1, 1.20.1) – Survivor's Elegy
Siscu's Survival Expansion Data Pack brings you an entirely new survival experience! Welcome to Survivor's Elegy, an extensive data pack designed to add cohesiveness and interesting features to your survival world! With renewed Biomes and some mechanics, this data pack is worth your time! Enjoy playing this data pack! Features: Game Mechanics Withering: Overworld creatures […]
PKK - Create!
A Create-focused adventure modpack with new dimensions, expanded exploration, improved combat, and advanced storage. It blends mechanical engineering, atmospheric biomes, aircraft travel, and enhanced survival for balanced long-term gameplay.