Forge Mods for Minecraft 1.21
Browse 190 free Forge mods for Minecraft 1.21 — popular picks include Savage Ender Dragon, Raided, Zombie Extreme.
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Savage Ender Dragon
Overhauled ender dragon fight with new mechanics
Raided
Expands upon the vanilla raid system to allow for more advanced raid mechanics
Zombie Extreme
This is a Big Mod that adds a bunch of new mechanics and a large number of zombies and infected to your minecraft world. In order to study a new biome, you need a Chemical Protective Suit, if you do not break at least one part, most of the radiation will i
Qliphoth Awakening
Adds various bosses with unique attacks and mechanics.
Ender Dragon Fight Remastered
A difficulty increase of Minecraft's final boss, with a focus on a somewhat Vanilla feel.
Companion 🐕 (Neo/Forge)
Mechanics to avoid losing your pets, but don't break the vanilla feel
Create Mechanical Spawner
A mechanical spawner block. Generates Mobs with rotation power.
Create: Mob Spawners
An addon for the Create mod for Minecraft. It adds a tool that can catch mobs which can then be placed into a Mechanical Spawner.
Armageddon
A highly configurable overhaul of Minecraft's way of progressing through the game : bosses, RPG-like, new mechanics, multiplayer compatibility, weapons, ores... !
Cobblemon: Legends Untold
Adds legendary pokemon & their structures.
Let Me Sleep
Monsters are keeping you awake? Customize sleeping, waking, and bed mechanics freely.
Shingeki no Craft | Attack on Titan
Titan Shifters, ODM, Cannons, Pure Titans, Thunder Spears, Modified Villages, Firearms, Royal Blood, Quests and more! Made using only Command Blocks, Minecraft Vanilla!
Stellarity
Extreme rehaul of The End in a unique fantasy style, combined with biome and structure overhauls, new items, weapons and plenty of other content to discover.
Mob Captains
Rare and strong mobs will spawn, dropping illegally enchanted gear
Create: Mechanical Companion
Get ready to explore the world with a mechanical friend! Equippable with new modules that integrate with the classic Create experience!
Withering Heights: Revamped Wither
Turning the Wither into something worth calling a boss.
Disable Mob Replacement
Disables the vanilla mob replacement mechanic in Pixelmon 9.x
Zombie Nightmare Expansions - Undead Horror Monsters
Adds various creepy undead entities with unique mechanics and intricate designs

Spawn Animations Compats
A datapack that adds compatibility for Spawn Animations with 50+ mods.
Whaleborne
Adds a new hullback mob and pirate ship mechanic
Razor Tyrant : the Reign of Terror
This mod adds a giant robot mob that follows and slaughters the players.
Better Babies
Makes baby mobs cuter
Advanced Wall Climber API
A powerful API for Minecraft mods that enables advanced wall climbing mechanics for entities. This API allows mod developers to easily add spider-like wall climbing behavior to any mob.
No Enderman Grief
Stops enderman from pickung up blocks

Dynamic light
Mobs on fire and some items emit light! Like the OptiFine's dynamic light.
Bareback Horse Riding
🐎 Allows riding horses without a saddle with tweaked game mechanics.
Horde Nights
This adds Lunar Events every 30-45 days, some making mobs a lot more powerful, others remarkably tame. Can you survive them all?
Unlimited Trading
Lets you trade infinitely without waiting for villagers or wandering traders to restock and prevents trades from locking.
Nice Mobs Remastered
Randomised mob equipment, 10 new mobs, 3 new bosses, a new late game dimension and more
Hundred Years Warfare
NPC-based combat and production gameplay, multiple control methods including RTS mode, special compatibility and integration with various mods, with future plans to expand into structures, management, RPG mechanics, and more.
Eggs - Cobblemon Addon
In these eggs you can find some common, rare or shiny cobblemon
Overgrown's Origins: Improved Inchling
Discover the Inchling Origin: blend agility, stealth, and aerial skills. Explore with a fresh perspective, balancing swift advantages and challenges.
Tide Extra Compatibility
Adds Tide compatibility for fish, loot tables and crates from over 25 different mods.
CRYPTID
Unique horror mod where your world comes alive. Adds 30 new cryptids and 40 new events. Now updated for slower gameplay
Mega Showdown Item Pack
Adds recipes and loot tables for Cobblemon: Mega Showdown
The Bee Fix
Fixes Bee Related Bugs on both client and server side