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Forge Mods for Minecraft 1.21

Browse 30 free Forge mods for Minecraft 1.21 — popular picks include Cobblemon: Legends Untold, Stellarity, Nice Mobs Remastered.

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Cobblemon: Legends Untold
1.21.1fabric

Cobblemon: Legends Untold

Adds legendary pokemon & their structures.

1.2Mdownloads
Stellarity
1.21.11fabric

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.

925kdownloads
Nice Mobs Remastered
1.21fabric

Nice Mobs Remastered

Randomised mob equipment, 10 new mobs, 3 new bosses, a new late game dimension and more

199kdownloads
CRYPTID
1.21fabric

CRYPTID

Unique horror mod where your world comes alive. Adds 30 new cryptids and 40 new events. Now updated for slower gameplay

144kdownloads
Legacy Mechanics
1.21fabric

Legacy Mechanics

Brings back nostalgic mechanics and quirks from the console versions of Minecraft!

113kdownloads
CobbleBuilds: Leaders [Cobblemon Addon]
1.21fabric

CobbleBuilds: Leaders [Cobblemon Addon]

Find Gyms, defeat Gym Leaders, and aquire Gym Badges to become the best there ever was

95kdownloads
Brutal Nightmare : Insane Difficult
1.16fabric

Brutal Nightmare : Insane Difficult

Minecraft too easy? Try this mods with nearly 40 modifiers - settings new mini bosses, which made minecraft become hard & insane. Enhanced hostile mobs' AI & Angry passive mob. Zombie place/break blocks. Skeleton,Spider,Creeper,Enderman.

84kdownloads
Piglin Conservatory v3.0
1.21.11fabric

Piglin Conservatory v3.0

Adds a news structure to the Nether, The Piglin Conservatory, along with a new Obsidian Apple, Dragon Fruit, Toxic Mushrooms, Hoglins' Fossils, Corrupted Emerald and a New Music Discs!

45kdownloads
MC Calamity
1.21.4fabric

MC Calamity

A datapack that attempts to recreate the Terraria: Calamity Mod

43kdownloads
RPGTitles
1.21fabric

RPGTitles

Small, cosmetic datapack that adds titles to small things in the game! See the dimension name when you switch dimension, see the current biome you are in and maybe get something when you kill a powerful foe..

38kdownloads
PerformanceX
1.19fabric

PerformanceX

Struggling with LAG??? Look no further! PX is an All-in-one server performance suite - 50 modules including item/mob despawn timers, AI throttling, lag machine detection, auto backups, Discord webhooks, Geyser support, and more. 1.8.8-26.2.

14kdownloads
Robotica
1.21.8neoforge

Robotica

Robotica is a futuristic Minecraft mod set in a high-tech world filled with advanced robots, towering mechs, and powerful sci-fi weapons

13kdownloads
Ember's Castles And Keeps
1.21.1forge

Ember's Castles And Keeps

Adds big new castles and towers with traps, enemies, loot and even parkour challenges!

7.8kdownloads
 DayCraft REVAMPED
1.21.1neoforge

DayCraft REVAMPED

DayCraft is made for everyone. Structures, mobs, and new mechanics will come to your world.

3.1kdownloads
No Modern Mobs
1.20.1forge

No Modern Mobs

Removes mobs that aren't in Beta 1.7.3

2.3kdownloads
The Dababy Modification 2
1.21.1neoforge

The Dababy Modification 2

Explore an alien dream like world, encounter unique mobs, use new mechanics, and see Dababy's face on every texture

1.6kdownloads
XxCreeperxX's Zombie Expansion
1.21.4neoforge

XxCreeperxX's Zombie Expansion

A mod that adds various types of zombies, blocks, items, dimensions, mechanics and more

1.6kdownloads
Mechanical suffering
1.21.1neoforge

Mechanical suffering

Modpack with little bit of everything. Create, BetterEnd and BetterNether, Ice & Fire, Born in Chaos, Cataclysm , Mowzies mobs and lot more.

1.1kdownloads
JADU CAT UPDATE
1.21.1forge

JADU CAT UPDATE

Mod for a cute fat bald cat named Jadu from South Korea.

700downloads
Better Entity Control
1.21.11forge

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.

421downloads
zzzZombie World
1.21.11forge

zzzZombie World

Makes the game only spawn zombies

413downloads
SurvivalReborn
1.21forge

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!

408downloads
Mighty: Magic and Rituals
1.21.1forge

Mighty: Magic and Rituals

A magic mod where magic and technology are deeply intertwined.

252downloads
Void Vanguards
1.21fabric

Void Vanguards

🛰️ ModJam 2025: A lore filled quest mod about conflict between The Vanguard and Voidborn.

224downloads
You Can't Sleep
1.20.1forge

You Can't Sleep

A about bed sleep's horror mod

75downloads
Slimes Everywhere
1.19fabric

Slimes Everywhere

Allows Slimes to spawn at night in any biome

54downloads
Luminous Nether Mod (1.21.1, 1.20.4) – A Nether Alive with Danger
1.21.1forge

Luminous Nether Mod (1.21.1, 1.20.4) – A Nether Alive with Danger

Luminous Nether Mod expands the Nether with two new biomes, lots of new mobs, and a variety of building blocks and decorations. This mod adds new gameplay mechanics, loot to find, and dangerous areas to explore. It makes the Nether a more lively and challenging place. Features: Adds two new biomes to the Nether: the […]

Galosphere Mod (1.21.1, 1.20.1) – The Diverse World of The Underground
1.21.1forge

Galosphere Mod (1.21.1, 1.20.1) – The Diverse World of The Underground

Galosphere Mod is a mod designed to enhance and expand diversity in Minecraft's underground world. This mod focuses on generating new biomes, creatures, mechanics, blocks, items, effects, achievements, and more. The new underground terrain generation introduced by this mod adds crystals and new mineral resources to the game. These new minerals and materials will allow […]

KingCraft [FORGE]
1.21.1neoforge

KingCraft [FORGE]

Travel to a different planet? Fight new bosses? Discover new game mechanics? Welcome here.

17kdownloads
The Fallen World
1.21.1neoforge

The Fallen World

This mod adds things like dimensions, blocks, items, mechanics, bosses, mobs, structures and much more!

6.5kdownloads