Minecraft Java 1.21 Mods
Browse 849 free mods for Minecraft Java 1.21 — popular picks include PLASTIC CRAFT, Advanced Crafting, Better Adventure Mode.
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PLASTIC CRAFT
A unique expansion that introduces versatile plastic materials, custom building blocks, and tools to upgrade your Minecraft survival experience.
Advanced Crafting
This datapack allows players to craft items in Survival mode that are normally only available in Creative mode or cannot normally be obtained. Instead of needing to ask a server owner or administrator to give you these items
Better Adventure Mode
This mod turns your survival mode into the ultimate adventure mode, built for exploration instead of creation.
GrimTactics
⚠️ Hardcore-only plugin. On non-hardcore servers, GrimTactics runs in passive mode and does not modify gameplay
Red-Light Green-Light Challenge
A high-intensity Red Light Green Light game inspired by Squid Game, where movement detection and timed phases create a thrilling survival challenge.
CampFirePlus
Level-up campfires: fuel, grow power, immersive survival.
TheConstant
A Fabric mod that channels Don’t Starve–style hardcore survival into Minecraft: manage health, hunger, and sanity; survive seasons, temperature, darkness, and food spoilage with crock-pot cooking and recipe planning.
One Life [NanoVirus]
You have only one life (Like in hardcore) but also after your death a corpse is spawn (Last thing that they will have after you)
Survival-Friend
prevents creeper block damage and crop trampling, enables portal based farms on SMP, offers /tpa features and global totem pop messages and the ability to make the ender dragon a bit harder.

Bamboo Unpack
Lets you cut Bamboo Blocks into Bamboo using a stonecutter. Simple and survival-friendly.
BloodyPunch
Bare-fisted survival brutality — punch hard blocks or mobs and you bleed. Hard materials require the right tool, or nothing at all.
Special Potions
Adds new powerful potions with unique abilities like Fire, Ocean, Wind, Warden, Ender, Speed, and Strength effects for survival and PvP gameplay.
Minecarts with Blocks
put a block in a cart! survival friendly!
Item Discovery
A small mod which lets survival players name all items whatever they want without imposing any pre-existing names.
SkyBlock But Better!
Vanilla Friendly Challenge!
Pass the torch
Ultra hardcore minecraft inspired from FlamingMoai's UHC: Generations, when you die the world will pass to a new player.

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.
CampHealSURVIVE
A survival mechanic that turns campfires into healing sources inspired by Fortnite-style campfires.
Proclamations
Proclamations is a Minecraft datapack that lets you add in-game announcements (using the /title command) to your Survival Mode builds.
Survival Nerf
Minimalistic vanilla-flavored design and balance overhaul. Mostly reverting bad decisions the devs have made. Intended for use with Etomb's Better Survival modpack.
Block4Block Plugin - Advancements
(Recommended Plugin) Survival mode with a unique cost to breaking blocks.
Schematicon
A creative planning dimension for builders. Switch from survival to creative and back with fully separate inventories and no balance disruption.
Stamina and Weight
A configurable survival mod with two main mechanics: stamina and weight. Stamina affects movement and combat, while weight changes how equipment and items impact gameplay. Most features can be balanced through config files.
SpaceFrog's Cat Variant Changer
Change a cat's breed (variant type) using a vanilla/survival-friendly method. Choose from all kitty varieties: black, calico, jellie, orange (red), persian, ragdoll, shorthair, siamese, tabby, tuxedo, white & a special random type.
PermaEfe
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.
Craftable Iron
A simple datapack that adds a crafting recipe for iron ingots. Originally made to skip the grind in skyblock.
BYD_WORLD_ULTRA
Vanilla Survival Server Basic Integration Plugin
SuperHardcore
A mod that enhances the survival experience by limiting your health and adds many more challenges.
CobbleGenerators
Modifies how cobble generators work, good for the SkyBlock gamemode
Simple Skyblock
A datapack that adds a lot of unobtainable items to the skyblock experience.
Sun Compass
A vanilla-friendly survival tool that uses the sun's position and time to find North

True Scroll
Adds True Scroll that let you use commands in survival mode
Remove Netherite Upgrade
Complete removes Netherite smithing template drop from survival. Also Fixes duplication glitch.
mutationcraft-plus
Adds 24 random world mutations that completely change Minecraft every 5 minutes, making every survival adventure unique.
OneSlotChallenge
A brutal hardcore mod that locks all inventory slots except the 5th. The remaining 35 slots are filled with permanent barriers. Survive with only one slot if you can!
Petrova Wastelands
Petrova Wastelands: An Interstellar Odyssey In a universe where the stars are fading, heat is no longer a resource—it is your only hope for survival.