Minecraft Java 1.21 Mods
Browse 2,731 free mods for Minecraft Java 1.21 — popular picks include Harmless Slimes, GRAVITAS, Potion Enchants.
Updated daily
Harmless Slimes
This datapack/mod makes slimes do no damage

GRAVITAS
Dimension dependant gravity
Potion Enchants
Adds enchantments that give potion effects as buffs to a player wearing armor enchanted with them.
B's GhostGrave
A ghost will spawn upon your death, and you can get back your gear from it once you get to it.
UltimaMod
Just some ABSOLUTELY OP items (armour, sword, potions)... I really hope you enjoy playing my first mod :)
Weary Wings
A mod that changes the elytra to vary durability damage based on velocity
Tridents Enhanced [Enchantments]
This plugin and datapack combo adds new enchantments for tridents!
Origins999
Origins999 is a custom Minecraft Spigot/Paper/Purpur plugin that introduces unique origins for players, each with special abilities, buffs, and debuffs. Players can choose an origin, form groups with others of the same origin, and complete quests
VoidCrafter
Adds a balanced crafting recipe for structure voids to minecraft.
Amaranthine
Harnessing the power of the sun since 2025
Solid jokes
Solid jokes this is a set of cool things and tools
LightItemremove
Effortlessly clean up dropped items with a sleek hologram countdown
Pots are OP
transforms ordinary pots into the ultimate treasure chests! Why mine for hours when you can simply smash pots to receive overpowered gear, rare resources, and god-tier
Espoir SMP
The plugin's twist is ⚙️ How the system works: 🧿 You start with 3 souls. 🔻 Each time you die, you lose a soul. 💀 At 0 souls, you become a ghost: spectator mode for 24 hours. ⚔️ Kill a player → you steal one of their souls, if you don't already have all
Sonic Boom Shard
Adds a craftable weapon that shoots the Warden's Sonic Boom attack.
SkyBoxed
lets you put on and swap skyboxes in a instant from any image
SunMoonEffect
Sun makes you blind, Moon makes you weak
Ores Armor Tools
this is my first mod that adds new ores, new armor and new tools!
SoloLeveling999
SoloLeveling999 — Forge your own power as you slay mobs, level up, and master four core stats—Agility, Strength, Vitality, and Attack Speed—to evolve from an ordinary survivor into an unstoppable force.
RewardsX
Turn Engagement into Rewards
Elemental Tiers
Custom elemental tiers with special powers.
Revive Rod
Revive your friends
Compound V and Temp V
This mod adds Compound V and Temp V from the tv show "The Boys". This Mod adds two crafting recipes as well as two new custom items.
CommandItem2
Bind command(s) to an item
Burning Daylight
Adds a survival twist to your gameplay with a plugin that causes players to take damage when exposed to sunlight.
SleepThunder
Get struck by thunder when you try to sleep
Spectral
Adds Spectral dust and blocks that can be used to hide things in the Spectral, and goggles to let you see them!

Portalis
A magical book that allows its user to teleport to their specified location.
Keepers of the Stones II: Reinforced Batteries
Keepers of the Stones II: Reinforced Batteries is an add-on mod that adds reinforced batteries to the game, similar to those available in the first version of the mod.
Geologica
Overworld biomes with natural rocks and sinkholes without adding bloat.

FxUndertale
A restoration mod aiming to integrate elements from Undertale into Minecraft. 还原向模组,旨在将Undertale中的内容融合进Minecraft中。
Forbidden Enchants
Forbidden Enchants is a set of original custom enchants for Paper, designed to feel truly forbidden: many are borderline cheat-powerful, while others are deliberately cursed and punishing. Does not use datapacks!
GrowSpam
Tired of waiting for crops and trees to grow? Just sneak (twerk) next to them and watch the magic happen! 🕺✨
PowerSMP: Ultimate
PowerSMP adds unique powers and custom abilities to your Minecraft SMP.
SkazochniyPatrol
Dive into the magical world of the animated series "Fairytale Patrol"! Meet your favorite heroines - Alenka, Masha, Snezhka and Varya, explore mysterious structures, collect the keys of the elements and go to a new dimension - the Fairytale World!
Cocktails
Allows you to combine potions in a crafting table to create a potion cocktail!