Minecraft Java 1.21 Mods
Browse 3,674 free mods for Minecraft Java 1.21 — popular picks include xApocalypse, PeakSkills, Bedrock Paradise.
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xApocalypse
A brutal, customizable zombie apocalypse plugin for survival servers
PeakSkills
A server-side RPG mod adding 16 skills with XP progression, permanent stat growth, collections, and a pet system — no client mod required.
Bedrock Paradise
Bedrock Paradise is a gardening mod inspired by Viva Piñata. Capture piñatas, build a garden, grow their favorite plants, and care for them.
Obsidian Dragon
A simple plugin to spawn and control Ender Dragons with custom loot and economy.
Vex's Transformation
Do you hate Vexes?, but always wanted more allays?
Lava from Blazes│來自烈焰人的岩漿
You can get lava from Blazes.│你可以從烈焰人身上獲取岩漿。
Permanent Ghastlings
Ghastlings cannot age if they are named 'Ghastling', 'Baby Ghast', 'Happy Ghast', 'Baby Happy Ghast', or 'Ghast'.
Discs and Stuff
Add discs and other stuff from the Like a Dragon series and some other series.

No Creakings
Disables spawning of the Creaking.

Maim
A brutal enchantment that sacrifices attack speed for devastating critical damage and crippling slowness.
Bats Reconfig
A fabric server-side mod that reconfigures bat spawns
Wither Skeleton Skull Fragments
Adds Wither Skeleton Skull Fragments as a drop instead of a small chance for a full skull
Storage V3
Virtual Ore&MythicMobs Items Storage For Survial&RPG
LightAntiCreeper
lightweight plugin prevent creeper destroy and damage 轻量苦力怕烟花插件

MakeMegasGreatAgain
Buff weak Mega Evolutions

Hatched
Eggs laid by chickens will have a chance to hatch
The Fixed Script
Here I amn't.
Mob Rockets
Send hostile Overworld mobs on an explosive one-way firework rocket ride! For hand-held, crossbow, and elytra use.
Quiet Apocalypse
Atmospherice, cosmic horror mod (megalophobia)
Chaosdrachen
Adds characters from the Chaosdragons.
No Sheep Griefing
Stops sheep from eating short grass, ferns, and dry grass.
Soul Sand Suffocates Silverfish
This datapack adds back a lost feature of soul sand to kill silverfish/endermites
Ready Crossbow
Make the piglins and pillagers attack you directly. Who goes around with an unloaded crossbow? Any mob that uses a crossbow will just shoot you.
EntityBlocker
A plugin to block mob in black-list
Pet Whistles
A simple mod that lets your pets attack the entity you are looking at with a keybind!

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。
Instant Win Button
Adds an instakill melee weapon... or so you thought.

creeperGriefing
A lightweight server side mod that adds a gamerule for creeper griefing
Garfeldi [Cobblemon]
Back in 2024, I made an April Fools' addon for Cobblemon just called "Garfeldi", ironically posted to the Cobblemon server on April 2nd. I found the files, like, 10 minutes ago, made minimal changes, and decided to post it to Modrinth.
Player Carpet Extension
A complementary mod to the "Carpet Mod" that allows you to manage the player's inventory with an interface and activate the switcher between items so you can use multiple items from the inventory.
28 Blocks Later
This mod adds the rage virus from 28 Days later and it's sequals, 28 Weeks Later and 28 Years later.
RealNpcs
RealNPCs is a highly advanced, cinematic PvP bot plugin designed for recording epic 1v100 horde battles and realistic bot combat in Minecraft!
MagicAirdrops
Replace boring airdrops with new events with various rewards and bosses.
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.
Endercon End Phantoms
Simple datapack adding phantoms to the end. Supports & Requires Endercon.
Villager Pets
A datapack that adds pets to villages, featuring cats and dogs!