Minecraft Java 1.21 Mods
Browse 862 free mods for Minecraft Java 1.21 — popular picks include LightCatcher, simulator infection epidemic crisis, Infinite Snowballs!.
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LightCatcher
The feasibility of using light source blocks in survival mode, with support for protection plugins.
simulator infection epidemic crisis
apocalyptic zombie infection simulator that transforms servers into a pandemic survival experience. Features progressive infection spread, contaminated players, quarantined villages, multiple zombie variants, vaccine crafting, and crisis events.
Infinite Snowballs!
Throw unlimited snowballs in Survival mode by holding at least two snowballs. Below that, the mod works just like vanilla Minecraft.
Charred Remains
Wither Skeletons drop Burnt Bones, a new item that can be crafted into Coal Dust and used as a fuel source. A small but flavourful addition to your survival world.
Smarter Nether Portals
Modifies how Minecraft creates Nether Portals. The scale of the overworld and nether is now dependent on the difference in center positions and size of the world borders. This is useful for small world border survival games.
ChainmailSieve
ChainmailSieve is a lightweight Paper plugin that gives chainmail helmets a special survival mechanic.
Ultra Hardcore Attributes
A mod that makes your game much harder than it needs to be by changing your attributes!
mSurvival
A comprehensive, modular, and lightweight survival core that brings essential features like Home GUIs, Async RTP, and staff utilities into a single, high-performance package.
Better Hardcore Datapack
Completely overhauls Hardcore mode to be true danger.
Rispwind's Survival Spawn Eggs REMAKE
Wandering Traders will occasionally sell spawn eggs.
Saplingblocker
Prohibits planting tree seedlings It does not give you tree sprouts, which can be interesting for survival underground, for example, in combination with other mods or plug-ins

Survival Currency
A fair and survival friendly solution to currency.
BoatflySurvive
Boatfly compatible with survival!
ZlAutoGive
Automatic vanilla drops system for Minecraft survival.
Route Helper
This is a QoL mod for skyblock that adds player relative waypoints. This is most usefull for routing out grottos easily.
StonecutterPlus
A survival expansion plugin with improved stonecutter recipes, mini blocks, custom items, QoL crafting, and Vane integration.
MaxTools
Perfect for a survival game with progression.
JustBed
A simple utility to teleport back to your bed respawn point with a single command. Lightweight and perfect for survival servers.

3LivesAdvanced
A lightweight hardcore like survival plugin that adds a limited lives system able to configured in alot of different ways. By ShuuNaX❤️
MashAutoCloseDoor
Built for survival/QOL servers where players leave doors open all the time.
Hardcore Tatoo
This mod gives you a Tatoo on your Arm that shows you, your Health and Hunger
VoxaTimber
Lightweight tree felling for faster survival gameplay.
Vyvern Mine
Vein mining — hold a key, break one block, break the whole connected vein. Hunger- and durability-limited, tunable live from the Vyvern panel.
Eating Ability
Eating Ability transforms Minecraft survival by giving players unique powers and abilities when consuming different items.

Rubbercore
A Mix of Hardcore and Normal Survival
ElementalCrystals
ElementalCrystals adds custom elemental crystals with special abilities. Players can craft and use Fire and Water Crystals in survival gameplay. Thanks
Survival+
Survival+ is a datapack that adds difficulty and suprise to Minecraft again. By adding tougher enemies and cool unique items. Along with a bunch of new mechanics and reworks of some old ones, causing you to relearn Minecraft in a whole new way!
SR ChestPreviwe Premium
SRChestPreviewer allows you to see the contents of any container without ever opening the UI. Perfect for survival
An Unbelievable Recipe MOD
Can't craft in Survival mode? Want to get bedrock? Wait, there aren't any Endermen anywhere! That's when you should use this mod! With this mod, you can craft 9 types of blocks that you normally can't craft!
Re:Path
This datapack rebalances progression, resources, and crafting by shifting smelting mechanics, tool tiers, and potion accessibility to encourage a more survival-focused gameplay
Coming Darkness
Survival data pack with my ideas to rebalance gameplay. It makes game passing a bit harder and longer.
Craftable Creakings
This simple data pack allows one to craft a creaking egg in survival! Now you can build redstone machines that activate simply by looking at a creaking that doesn't despawn! (The creaking will not despawn if named)
mc is too ez
A survival difficulty mod that makes Minecraft harder, more punishing, and less forgiving.
modify vanilla
modify vanilla is a practical mod designed to enhance your vanilla survival experience by optimizing and adjusting existing crafting mechanics without adding new items.
Insomnia - Hard Mode
Enhances all hostile mobs. New mechanics, higher stats, unique combat. Hardcore survival.
Lightning Countdown
Stay still for 15s? Get struck by lightning! Survive 5 strikes to summon a Charged Creeper. Keep moving to avoid the electrifying loop in this thrilling survival challenge for Minecraft!