Minecraft Java 1.21 Mods
Browse 3,671 free mods for Minecraft Java 1.21 — popular picks include Improved Drops, Copper Golem Reforged, Echo Shards as a Warden Drop.
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Improved Drops
Hi there! This mod for minecraft forge 1.20.1 adds some features that the game NEED: Thirsty system(not affects to health, only to saturation) New Deco blocks, like golden bars and chiseled gold New Crop - Pepper and nether pepper (soon)
Copper Golem Reforged
Plugin that adds configurable copper golem upgrades with separate diamond and netherite behaviors
Echo Shards as a Warden Drop
Adds echo shards to the Warden's loot table.
Piglin Brute Prevention
Prevents Piglin Brutes from spawning.
mob balls
This mod adds balls that can catch mobs with different tiers. More tier = More better (I know how grammar works! It just rhymes better)
Golem's Legacy
This mod adds new unusual golems made from various blocks to Minecraft.
Deadly Skeletons
Turns Skeletons into a serious late-game threat by overhauling their combat equipment and spawn rules.
Lean Times
Makes getting food harder.
Creeper Extended
Extends upon creeper functionality, making them more fun to interact with. Also adds several effects and items.
The Guilty
Every mob you kill now makes you guilty
Happy Trains
Happy Ghasts in minecarts look forwards!
ArcaneMobs
A plugin to enhance the mobs on your server
Safe Dawn
enemies are pacified by the sun's light
MobEffects
Vanilla-inspired spawn potion effects for hostile mobs
Simply Horse Roads
It's a simple and optimized plugin that boost the horse speed on certain road-blocks with the opition to add player boost aswell.

THIS
Port of the Chickens mod, as well as roost!
TemporaryCastration
Limit lags caused by massive farms !
Muddles
An early version of a mod consisting of my mcreator experiments
Undead Transformation
Zombie transform into husk if died by the sun and skeleton transform into bogged if in contact with water for too long
Steve's Custom Bosses Data pack
This data pack adds custom recipes, advancements, challenges, and bosses to the game, all with vanilla mechanics!
Warfre's Mob Personality
Enhance your vanilla experience with tons of variants and details.
Coherent Content
Small implementation that fixes some of the inconsistencies and mechanics of the game
Damage To Health
This mod makes it so that whenever you deal damage to a mob, your maximum health increases by the same amount of damage dealt. (Does not affect players.)
Silk Harvest
Add the ability to get spawn eggs in survival from killing mobs using a silk touch tool.
Happy ghast speed upgrade
This project adds faster happy ghasts with their speed fully configurable
Survival Spawn Eggs
This project adds Spawn Eggs to Minecraft Survival Mode!
PollutedLands
PollutedLands adds a dynamic pollution system where over-mining and exploitation in a chunk leads to environmental decay, corrupted mobs, and eerie visual effects, creating a harsher, more immersive survival experience.
hybrid-pillager-drops
A combination of the old pillager drops and new ones. Keeps: - ominous potions - captain banners Adds: - 40% chance of 1-5 emeralds - 5% chance of random lvl. 30 book
ChaosSwap
Randomly swap positions with mobs every 40–60 seconds. Fully customizable with optional effects and instant mode. in the config file
CarpetStairs
Carpets on the stairs and slabs for your server
Iron Golems' Revenge
Iron Golems will recognize you as the threat you are and attack you on sight. They'll also get EXTRA angry towards players only.
MultiverseCreatures
Plugin for custom themed creatures and items on Spigot/Paper
Armor Resistance
A Balanced PvP Oriented Mod That Adds A New Attribute To Netherite Armor!
Chunk Ticker
Keeps selected chunks permanently loaded and fully ticking
NoMob-Bat
NoMob-Bat— Completely removes bats from your server by preventing spawns and purging existing ones.
Mob Swap
Swap with a random mob every 60 seconds!