Minecraft Java 1.21 Mods
Browse 3,634 free mods for Minecraft Java 1.21 — popular picks include Speed For Ghasts, Healing Mod: Rebooted, MakeMegasGreatAgain.
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Speed For Ghasts
Give potions of swiftness to Happy Ghasts to make them fly faster.
Healing Mod: Rebooted
Healing Mod: Rebooted is a complete reimagining of the original Healing Mod v1.3.0, rebuilt from the ground up for Minecraft 1.21

MakeMegasGreatAgain
Buff weak Mega Evolutions
MagicAirdrops
Replace boring airdrops with new events with various rewards and bosses.
28 Blocks Later
This mod adds the rage virus from 28 Days later and it's sequals, 28 Weeks Later and 28 Years later.
Instant Win Button
Adds an instakill melee weapon... or so you thought.
Faster MC
Plugin that tweaks the game to make it slightly faster to complete.
HoneycombTools
A bulk-breaking tool mod. Wrap any vanilla tool in honeycomb on a crafting table to get tools that break adjacent ores/dirt/logs in one swing. 4 tiers × 6 materials × 3 kinds = 72 tools.
SpaceFrog's Frog Variant Changer
Change a frog's variant type using a vanilla/survival-friendly method. Works with vanilla (cold, temperate, warm) and optionally 'More Frogs 2' variants: crimson, ender, infernal, poison dart, purpur, sculk, spirit, warped, and wood.
Simple Raider Guns
This mod adds the items and weapons from a famous videogame called Arc Raiders.
Entity Spectate
This is a simple Fabric mod that allows you to shift-right-click any entity (besides items) to spectate it on the client-side.
SpaceFrog's Real Pet Frogs
You can tame & make frogs your pets similar to wolves & cats. They get power-ups, they'll teleport to you on your adventures, or summon them as a mighty Frog Squad! They'll even defend you from hostile mobs (see details).
7 Deadly Sins : Reworked
A feature-rich Paper 1.21.1 plugin introducing 70 custom enchantments, raid bosses, progression systems, and party-based gameplay inspired by the Seven Deadly Sins.
Pet Whistles
A simple mod that lets your pets attack the entity you are looking at with a keybind!
Flurry
Some wintery additions for your server

Flying Speed Bonus│飛行速度加成
Speed and Slowness effects affect flying speed.│迅捷與緩速效果會影響飛行速度。
Villager Pets
A datapack that adds pets to villages, featuring cats and dogs!
HorseAddition
Unleash your horse's full potential
Anti Trader Despawn
This 1.21.4 Datapack adds a feature in which wandering traders with a NameTag on them DON'T Despawn!
Mob Rockets
Send hostile Overworld mobs on an explosive one-way firework rocket ride! For hand-held, crossbow, and elytra use.
RayHeartVision
A high-performance, ray-traced health indicator for players and mobs. Zero lag, 100% accurate. Optimized for 1.21+.
Nether's Paradise (Hell's Paradise)
Adds Biome, Powers, Mobs, Weapons ect... from Hell's Paradise !
No Sheep Griefing
Stops sheep from eating short grass, ferns, and dry grass.

Maim
A brutal enchantment that sacrifices attack speed for devastating critical damage and crippling slowness.
The Corrupted Past
He destroyed it all. He killed us all. He did this to us.
Piglin Growth│豬布林成長
Baby Piglin will grow up.│幼年豬布林會長大。
Zombies are Zombie Villagers
All zombies will spawn as zombie villagers instead

Butcher's Deerhunting (Yi Xi)
Adds a minor, funny, slightly terrifying stalker to your worlds, along with cool weapons, tools, items, and a new material system to make them.
PhantomReducer
PhantomReducer lets you customize and reduce phantom spawn rates to keep your nights peaceful.
XPiglin
Makes old Piglin XP Farms still work after the patch. (Including old Item Drops)
Mega Showdown Item Pack LITE
Adds extra recipes to Cobblemon: Mega Showdown
Easier Backstabs
mod that displays the radius of the shield and the 180 degrees you can hit to break a shield or avoit it for easier backstabs, this mod is made with AI just to let anyone know
Wither Skeleton Skull Fragments
Adds Wither Skeleton Skull Fragments as a drop instead of a small chance for a full skull
disguise-mod
Disguise as mobs, blocks or online players.
Warden Fight: Reimagined
A vanilla-like overhaul of the warden boss fight
BedLoader
An updated client-side companion for GeyserSkinManager to restore Bedrock Edition player's skins on Java servers.