Minecraft Java 1.21 Mods
Browse 577 free mods for Minecraft Java 1.21 — popular picks include MultiverseCreatures, Cobblemon // Project: Spacetime, ChaosSwap.
Updated daily
MultiverseCreatures
Plugin for custom themed creatures and items on Spigot/Paper
Cobblemon // Project: Spacetime
A Cobblemon side-mod that adds space-time distortions to Cobblemon, inspired by Pokemon Legends: Arceus.
ChaosSwap
Randomly swap positions with mobs every 40–60 seconds. Fully customizable with optional effects and instant mode. in the config file
MC Unbalanced World
A great overhaul to survival progression, adds 30+ hours of content, to enjoy alone or with friends
CreeperChestSave
Chests don't explode but blocks do.
FeatherTouch
Push mobs gently with feathers - no damage, just gentle nudges!
Hard Mode Easy Damage
Plugin that keeps the benefits of hard mode, but lowers damage inflicted by mobs to easy mode
1 Tap Kill
Give selected players the ability to instantly kill allowed mobs or players with a normal melee hit. (Troll plugin)
Hollow Knight Reimagined: HollowPlayer
brings the magical abilities and mechanics of Hollow Knight into Minecraft.
Unique Player Behaviors
Sheep! Monkey! Dragon! Bee! Unleash the power of the Soul and harness the powers of your Spirit Animal
LeashedMobsTeleport
Teleport leashed entities across dimensions and allow leashing any type of mob with advanced protection.
creatifight
A new gamemode for players who want the thrill of building and fighting without worrying about damage and dying. Like creative mode, but with aggressive mobs to battle.
Crazy Damage
Advanced PvP enhancement plugin with damage multipliers, totem limiter, and anti-farming protection for balanced competitive gameplay.
twinkle popo mod
it adds twinkle popo realistic pikachu and realistic hellokity
Nightshift
Challenge oriented, randomly generated nocturnal events.

Titan Potions
This Mod Adds in potions that will turn you into a Titan!
Wasteland Artifacts
Wasteland Artifacts is a powerful Paper plugin that adds a complete artifact system: custom items with unique effects, multi-block altars for crafting, blueprints, dungeon loot, mob drops, an artifact bag (/bag), and full configuration via YAML files.

Zombie Syringe
a syringe that can transfer zombie (husk,drowned) blood to villagers
Dominus
Dominus is a Paper 1.21+ plugin that lets trusted operators secretly control a Minecraft server — shaping the world with powerful tools or walking among players disguised as any mob — while remaining completely undetectable.
Project Legacy
An ambitious Minecraft mod introducing unique armor sets, weapons, immersive progression, and handcrafted adventures.

PILLAGER ARMY
This mod adds new creatures, a new interface, and even magic. It also improves raids, making them more complex.
Cristalxal
Taiga update mod, which also adds new structures and weapons
Aegis system
a simple and very customazable rpg plugin that includes mana, abilities, classes and more!
Sinfall
The study of sins: How to use them or how to get rid of them!
Mainworld
Mainworld... mod introduces several new mechanics,items,and armor. it also adds about 30 diffferent structures,each suited to its own biome,as well as new biomes. Explore the world and discover its fill potential, know that they are always watching...
我的伙伴
本模组添加了一只名为"我的伙伴"的宠物狐狸。它会认你为主、跟随你冒险、免疫所有伤害,还能帮你打开末影箱。登录游戏时自动获得,无需合成。This mod adds a pet fox called 'My Companion'. It recognizes you as its owner, follows you on adventures, is immune to all damage, and can help you open Ender Chests.
UltimateSouls
When you kill your enemies you capture their souls and become strong ......
P_Comandos
A plugin for commands in items!
Elemental Mob
Elemental Mob gives creatures elemental identities, combat traits, themed status effects, resistance potions, and elemental enchantments.
Living Powers
This mods main focus is to provide a small list of powers that the player can obtain for a small edge during fights, or even just normal every day living. (submit an idea and you can have your power added to the mod)
LiveJava
a VS Code-powered Web IDE that lets you build multi-class, hot-swappable native Java plugins instantly with zero reloads and automatic dependency injection.
Hapyy ghast is also a balloon
Happy Ghast is also a balloon is a fun and lightweight Minecraft datapack that adds a new advancement: just observe a Ghast or a "happy" Ghast through a spyglass to earn it!
Silver & Withers
A Minecraft mod that adds silver, its items, couple new mobs, structures and potions.
Telum Solaris - At the Forest's Edge
Telum Solaris aims to add new weapons, armor and boss to minecraft for every stage of minecraft's progression. It is currently my first and only project!
ExplodingEntities
A mod which makes entites explode when damage is done.
Revenge of the DOGS!
Kill dog = death. Have to protect mans best friend...