Forge Mods for Minecraft 1.21
Browse 187 free Forge mods for Minecraft 1.21 — popular picks include Spider Jockey (Earth2Java Compat), Threads of Creation, Allay Companion.
Updated daily
Spider Jockey (Earth2Java Compat)
This mod makes skeletons seek out nearby spiders so they can become jockeys.
Threads of Creation
Threads of Creation merges the mechanical wonders of the Create mod with immersive quests, a vibrant world teeming with passive mobs, and breathtaking realism for an unparalleled Minecraft adventure.

Allay Companion
Replaces the totem of undying with an animated allay entity that moves around with you.
Lovely Robot: Tribute
A faithful recreation of lilacx02's original companion mod. Four robots, their original colours, their original feel — modernised to run on current Minecraft versions.
Horses walk on powdered snow (HWOPS)
Horses with leather horse armor can now walk on powdered snow!
Chicken Jockey (Earth2Java Compat)
Inspired by 'A Minecraft Movie', this mod makes baby zombies seek out nearby chickens so they can become jockeys.
All Wither Skeletons in Nether
Replaces all Skeletons that spawn in the Nether with Wither Skeletons. Some even have bows!
Enchantments through Carpet
A simple way to get enchantment power from bookshelves through carpet and some other blocks!
Villagers Tasks
Enhances vanilla villagers with profession-specific tasks [1.21.9 - 26.2]
Happy Ghast Tiers
Are your Happy Ghasts getting you down? Well wipe those tears away with Happy Ghast Tiers! This datapack adds five new tiers of harnesses each providing a small but noticeable speed boost. And as an added bonus we've added Ghast Treats!
MobStack26
A datapack that stacks mobs to enhance performance of large animal farms
Cobblemon Black&White Battle Music
Adds music from Pokémon Black&White to Cobblemon battles
Colly SMP [NO LONGER UPDATING]
The Official Datapack used in the Colly SMP, no changes, no tweaks, THE REAL DEAL!
Succession
What if the world remembered what you did to it?
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.
zzzZombie World
Makes the game only spawn zombies
SurvivalReborn
Survival Reborn enhances Minecraft survival with dynamic terrain, new biomes, and unique mobs, offering fresh challenges and gameplay mechanics. Explore, craft, and survive in a world full of adventure, ancient secrets, and powerful items!
Villager Follow You
The villager will follow you anywhere you go after you give him 5 emeralds.
Renewable Wither
This makes the wither drop three wither skeleton skulls in addition to a nether star. It's perfect for wither farms, or just to remove a tedious task.
Flux's Improved Wolves
A Simple Datapack that Improves Wolves with new Features and Better AI that is based on a video
Lootier Farm Animals
Encourages farming and better hunting of the main farm animals for their different traits.
Leave My Pets Alone
Makes wolf armor protect against a /kill
Chaos Chickens
Unpredictable Chaos Chickens ready to ruin your day.
Mighty: Magic and Rituals
A magic mod where magic and technology are deeply intertwined.
Better Peaceful
Removes hostile mobs, except for mobs, which you need to beat the ender dragon.
Void Vanguards
🛰️ ModJam 2025: A lore filled quest mod about conflict between The Vanguard and Voidborn.
Conjurer's Dream
Summon entities to fight and defend for you using a diverse array of powerful staffs each with unique abilities.
LogicSense : Tactical Stealth & Enhanced AI
Rewrite Minecraft's AI from scratch. Use shadows, sound masking, and tactical distractions to survive against mobs that truly see, hear, and hunt(Vanilla friendly).
Resin Gun
A weapon to catch and transfer Mobs with fancy animations
Wither Skull Dupe
Wither skulls can be duped just like how armor trims can!
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.
Doomful
Mod that reworks Smite and Bane of Arthropods enchantments and expands upon them.
Mega Showdown Item Pack LITE
Adds extra recipes to Cobblemon: Mega Showdown
Reach Enchantment
A vanilla datapack that adds a Reach enchantment, letting you hit mobs from further away.
More Realism (MR)
This project helps you experience your world more realistically.
More Breeze Rods
This project makes that a breeze now tropps more breeze rods.Very usefull