Minecraft Java 1.21 Mods
Browse 225 free mods for Minecraft Java 1.21 — popular picks include Cobblemon: Gem Cutting!, EXP-Gems, Just Annoying.
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Cobblemon: Gem Cutting!
Ever thought the type gems were too hard to find? Then craft and cut them yourself!
EXP-Gems
Perfect for RPG/Fantasy servers
Just Annoying
A mod made to make Minecraft just a little bit annoying to give yourself more of a challenge.
Wheel of Misfortune
Mod for interesting speedruns with modificators. I take modifications from Youtuber KompotikIvun. Sooo... Yes I made this mod party for myself.
Mushroom Blocks Optimization│蘑菇塊優化
A Mushroom Block will drop itself when broken, and can be broken down into Mushrooms.│蘑菇塊被破壞後會掉落自身,並且可以分解成蘑菇。
Mystic Mechanica
A world with Magic and many Technical function, Beautiful graphics, Fantasy, Modpack

Re:zer0
Die, return, try again. When cursed by the Witch of Envy, death becomes a checkpoint that rewinds your body, inventory, and the world itself.
MobIgnore
Allows players to disable mob aggression towards themselves.
Acid of Rain
In this plugin, a danger zone has been created that simulates acid rain with four threat levels. A protective suit has also been created to help you survive in this area. You will find yourself in a world where instead of the usual boundaries of Minecraft,
snapcam
Placeable camera for Minecraft fabric 1.21.1 — enter its view, shoot handheld, or use the self-timer. No commands, no custom keybinds. Inspired by the Education Cam.
Stonecutter Shelves
Adds the ability to craft shelves in the stonecutter using logs or stripped logs.
Where Is My Spawn?
... you ask yourself. Until you find this mod.
Revive Core
Hardcore death-ban plugin with revival mechanics and self-revive protection.
Fractured Reality
A story focused mod, in which unknown beings will enter your world and break apart reality itself.
Fractures - Shelved
Brush your Shelves! Using a Brush on a Shelf Block allows you to change how its items are displayed.
hardcorify
adds an additional heart that changes depending on how many hours you have lived. the heart itself has no effect on gameplay and does not give any advantages.
Overgrow
Let the world OVERGROW itself.
Soul Alchemy
This datapack was originally created as a way for the player to modify their own attributes in a Survival world. This datapack has since expanded to a couple more things to do with the player modifying themself of close items/objects.

Size changing potions
A pretty simple but effective mod that adds size changing potions, which does NOT use pekhui! Try not to make yourself too big or... *windows error noise*
PluginPilot
Download plugins directly from Modrinth,Hangar,SpigotMC while being ingame! Load,unload, debug all in one plugin itself :)
Mythical_sword
This mod adds a mythical sword. Funny for manhunts.
Time, Dr. Freeman?
When death comes knocking, time itself stops. Meet an old friend - is it really that time again?
MCCapes
Lets you choose your own client sided minecraft cape purely cosmetic no one else can see besides yourself!

Meridian - Enchanting Overhaul
Enchanting you build toward, not a slot machine. Five-stat shelves shape every roll, with treasure shelves, salvage tomes, and enchantment libraries for storage. 146 enchantments, deeply configurable, standalone.
LightVision
Lightweight night vision plugin. Let players toggle it themselves, or control, block and automate it as staff.
Vyn's Clones
Conjure perfect self-reflections that can aid your journey
Embers of Rest
A simple and immersive mod that allows players to rest by the campfire. Warm yourself, recover health over time, and enjoy a cozy survival experience.
SuperHide
This plugin allows people with permissions to fully hide themselves in the playerlist! It shows no empty nickname, it completely hides you!
DrawerShelves
Drawers storage system 100%server side using shelf blocks
Soul Items
Skip the standard ore grind and hunt for rare, self-leveling tools exclusively found in Ancient City structures. Elevate your playstyle as your gear organically grows stronger with every action you take.
RandomNoteBlock
Make noteblocks play random sound itself
Self Planting Crop Items
Drop crop items (seeds, potatoes, ect.) onto farmland and it'll plants itself!
Cloth Armour
Protect yourself from the Warden!
MurderCraft
A multiplayer mod inspired by the Murder game mode designed by Squeezie & Théodore Bonnet (itself inspired by Garry's Mod Murder). 2 hidden murderers, 1 detective, innocents trying to survive. 4 rounds, tasks from round 3, role reveal mechanic.
nameshort
This mod allows you to have shortcuts for your command. It is compatible with other mods so try it for yourself!

TD mod
TD is a mod without a fixed foundation, ranging from fantasy to other fictional concepts