Minecraft Java 1.21 Mods
Browse 2,241 free mods for Minecraft Java 1.21 — popular picks include Penomior, B's KnockOnDoor, Sinytra Connector Crash Fix.
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Penomior
LeveL System and make your own build and fight with your friend!
B's KnockOnDoor
A simple plugin for roleplay. With this, you can knock on your friends' doors.
Sinytra Connector Crash Fix
Fixes crash in Sinytra Connector
Challenge Pack
Challenge yourself and beat the game with different challenges! Or just play for fun if hardcore is not enough! This is my first datapack!

oSzoukaua's: No loss XP
Drop all of your XP when you die and go recover it all!

Heartcore
A configurable Minecraft Hardcore mod that removes hearts when you die, with a few other added features.
Better Piston Sounds
Better sounds for your pistons! Now even more mechanical and bulky!
Auto Rocket+
This project has been archived due to low downloads and no motivation to continue updating. Auto Rocket+ automatically equips fireworks while flying with an Elytra and restores your previous offhand item when you land. Toggle it anytime with R.
SlipperyPlus
A mod make all the blocks incredibly slippery!
ViveMonkeCraft
Gorilla Tag-style VR locomotion for QuestCraft and Vivecraft (Minecraft 1.21.4-26.2). Grab walls, floors, and ceilings with your VR controllers and physically swing through the world. Claude Code is Highly Used In this project
Kappa's AntiCheat
A lightweight Fabric anti-cheat designed for high performance on large-scale servers.
IFR25KU: The Institute of Fairy Research 2025 Kakera Unofficial
A Minecraft mod that presents a possible world set in the MirageFairy universe.
Deepcraft
A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.
Herobrine Mode
Play as Herobrine and explore a cursed world
Illagers Attack Babies
Illagers now attack baby villagers. Because why not.
Sizeable Creeper
Just a datapack that spawn creeper at different size
汉字工艺 Chinese Characters
你已经很久没写过一个完整的汉字了。 It's been a long time since you've written a complete Chinese Character.
TeethDweller
Adds the Teeth Dweller but has progression or something idk
Minecraft, But It Gets Faster
Increases the tick speed exponentially, starting at 1 per minute.
ULTRADEATH Animation
Replicates the death animation from ULTRAKILL in Minecraft!
Last Resort [Cobblemon 1.7]
Adds more ways to get resources from your Pokemon... and possibly consume them?

Translucent Lava
simple mod which makes lava look like water
Tweaks
Change some values in Minecraft using gamerules
Typhon
a Volcano Simulator "Paper Plugin" for Minecraft
Wither Loot
Adds better custom loot dropped by the wither
ForceField
Push pesky players, mobs, and even blocks away from yourself!
PVP hitboxes
🗸 This mod changes vanilla hitboxes (F3+B) for PVP.
One Slot at a Time
Removes your hotbar, forcing you to only use one slot for your hand.
Keep XP On Death by Juix
Datapack that lets you save your XP on death, without KeepInventory. Fully customizable ! (Milestones, Recovery percentage, or Fixed XP loss)
Infested Netherrack & End Stone
INFESTED Netherrack & End Stone to End and Nether Dimensions with Spawn Mob System (Endermite and Blaze) (infected)
Elements of Beta
Elements of Beta is magical datapack that not only brings beta Elements to 1.21, but adds more! Check out Purely Beta for just bringing vanilla Beta features.
OnlyCraftOnce
Do you only want two maces on the server? Are you annoyed by the idea of unlimited items? Then this mod is for you!
Silkless Touch
Makes a ton of blocks minable without silk touch.
Mendingless Netherite
This Mod simply removes the ability to add Mending to Netherite.
TripWireDisarmer
Allows you to use shears to make tripwire disarmed+powered, which can be used to make tripwire (string) duplicators in NeoForge.
Mace Glow
This plugin adds a glowing effect to every player who has an MACE in their inventory