Minecraft Java 1.21 Mods
Browse 1,580 free mods for Minecraft Java 1.21 — popular picks include Duck Mod, Alkatraz Magic, Easy Bee.
Updated daily
Duck Mod
Adds a client-sided, toggleable duck to your game to follow you around, with an optional server-side component.
Alkatraz Magic
Advanced Magic Plugin
Easy Bee
A completly new way to trasport bees with extra tweaks
Teh
Floating Damage/Heal/XP Indicator
VoidMachina
RPG modpack with magic, machines, and exploration for Minecraft 1.21.1 NeoForge. Optimized to run with only 4 GB of RAM and compatible with multiplayer and mobile devices via PojavLauncher.
Depth Based Creeper Griefing
Creepers don't damage surface blocks, but are more dangerous deep underground
MythicRewards | Boss kill reward/drop plugin with custom rule support | 1.20.5+
MythicMobs Support - Top damage rewards - 6+ reward type built-in - Create your own reward rule
Cubic Realism
CB is a mod made with Mcreator, having the goal of revamping minecrafts realisim and magic. From perma ban swords to steelmaking and even lead poisoning, this mods goal is to have it all! (Yes that includes bombs).
Jerry Mod
Jerry.

Hyrinity (Legacy)
An overall content mod adding progression, bosses, dimensions and more!
Mobs' Equipment Will Be Damaged│生物的裝備會損壞
When mobs use equipment, the durability of the equipment will also be reduced.│當生物使用裝備時,裝備的耐久度同樣會降低。
Eternal Quests: RPG Overhaul
Dive into Eternal Quests: RPG Overhaul! One mod, endless adventure—epic weapons, powerful armour, and fierce foes await. Forge your path and become a legend!
Better Entity Control
Take full control over mob and projectile attributes — modify health, damage, speed, armor, knockback, scale for mobs, and damage, speed, gravity, knockback for projectiles, with commands in Russian and English.
Adventurer And Ruby
adds 3 tamable gem creatures and some powerful potions, weapons, and tools to make late-game survival easier.
Serene Cyclopes Mod
This vanilla+ mod includes even MORE Cyclops variants, but this time, they are PEACEFUL!!! Although they are passive and do not fight back, they were designed specifically to have their own place in the Minecraft ecosystem. - MOD HAS BEEN MERGED
Encounters
Adds immersive, fully customizable encounters. More challenge, more surprises.
creeper-apocalypse
Mob Replacement System ALL mobs spawn as Creepers! with exceptions Exceptions that remain normal Blazes you still need blaze rods! Villagers or trading Ender Dragon final boss remains Iron Golem
Elysium Of Realms (outdated)
Enter a realm where technology, colonies, monsters, and mysticism merge into a single, evolving world.
Doors Invasion
Doors entities and items made their way into your world!
Tales of the Third Age - Balrog
Adds a Balrog Boss to your Middle Earth modding experience!
Mount Charge Damage
Mounts deal damage when running into mobs.
Origins-Mobs-Enhanced
An Origins Reborn Enhanced origin addon for PaperMC servers, based on the Mob Origins mod by UltrusBot
Into The Crazy
A cute, magical fantasy modpack with cozy biomes, charming villages, and adorable creatures—where soft, whimsical beauty hides ancient magic, dark secrets, and lurking danger beneath the surface. ✨🖤
CreeperConfettiPro
A fork of the CreeperConfetti plugin, adapted for higher game versions
Heritage of the Gods RPG
This mod provides new PVP features by adding new abilities, new weapons, and new mechanics.
Paleolithic Era
Adds paleolithic era crafting, survival tools, and tech to early Minecraft gameplay. Expands the early game tiers a bit more.
AbilityMania
Ability Mania is a server-functional plug-in that adds super powers.
Living World
A mod that aims to expand on the lackluster exploration, immersion, and looting of Minecraft!
Soul Scythe
This datapack adds new weapon, that can contains souls of mobs
Spells & Sorcery
Datapack that adds Spellbooks, Alchemy, New Items, New Mobs, and even a New Boss!
Colly SMP [NO LONGER UPDATING]
The Official Datapack used in the Colly SMP, no changes, no tweaks, THE REAL DEAL!
Cobblemon Torchmaster Fix
Allows Torchmaster to prevent Cobblemon from spawning in areas where it is not allowed to spawn.
Boss Update
This mod adds three new distinct bosses with custom drops and powers. (also available in multiplayer worlds.)
New Potions & Effects+
This modification adds new effects to potions! For example, a detonation potion that explodes a player or creature at the end of the effect!
OK Health Indicators
Highly customizable Health Bars & Damage Numbers! Over 100 settings in total!
Easy Freezing
A mod that allows you to Freeze Time around you at will! Try with multiplayer and things get confusing fast!