Neoforge Mods for Minecraft 1.21
Browse 958 free Neoforge mods for Minecraft 1.21 — popular picks include Monster Hunter Craftlands, Scaling Difficulty, NeoGuanNiao.
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Monster Hunter Craftlands
Implements features from Monster Hunter into Minecraft.
Scaling Difficulty
Scale mob statistics based on time/distance traveled in the world. Port from Globox's RpgDifficulty
NeoGuanNiao
Neo Guan Niao adds a living bird ecosystem to Minecraft, featuring realistic behaviors, individual bird traits, breeding, nests, bird guides, and immersive wildlife interactions.
Ben's Monster Energy Mod
All the Monster Energy you could ever want... and Beer too for some reason.
HEY! Villager that is my bed!
Stops villagers from using your own bed!
Naturally Spawning Withers
Naturally spawns withers in the nether!
Elderly Guardians
Renewable sponges. Thunders convert Guardians to Elder Guardians
Lost in Dreamland(迷失梦域国)
Add a series of new things.Including a new dimension.

Sniff Trail - Unique Rideable Sniffer
Automatic movement using a sniffer!
tame every mob
Tame every regular Minecraft mob, control their behavior, store them in Mob Pockets, and upgrade them with custom equipment.
not_alone.jar
This is a horror mod that adds entities to your world
IFC-Integrations
Unite the worlds of Ice and Fire and MCA Reborn with legendary relics, enhanced creature interactions, and a new way to experience both mods together.
Always Hostile Animals
Makes all normally passive or neutral mobs attack the player on sight.
Desolation: Reburn
Adds the charred forest, a spoooooooky biome to the Overworld!
Mechanical suffering
Modpack with little bit of everything. Create, BetterEnd and BetterNether, Ice & Fire, Born in Chaos, Cataclysm , Mowzies mobs and lot more.
JOJO - stone block crusaders
Adds many features from the popular manga/anime jojo's bizzare adventure (jjba)

1.21.7 Backport (Lava Chicken Backport)
Port of the new 1.21.7 features to older versions
Zombie Have Eyes
Zombie Have Eyes — server-side mod for NeoForge 1.21.1. Zombies chase and attack only with direct line of sight — hide behind blocks to break aggro. Sneaking grants a distance-based chance to stay unnoticed. Compatible with Zombie Awareness.
NeoPasterDream
Also known as the NewPasterDream, it is a port of the original mod to the 1.21.1 NEO loader, and has been restructured to make it more oriented towards adventure themes.
Alpha Craft
Go back in time, and collect resources from old minecraft!
JtC Totem Mobs
Give Totems to Mobs! Save your Pets from Death!
Create Pets
addon of create adds mechanical pets
Shades
A mod that adds the 'shade' mechanic from Hollow Knight.
Realms of Runeterra: A tale of Relative Dimensions
New blocks, items, mechanics, stories and adventures await you in a 131072-side block map of Runeterra, the world of the world-wide known MOBA League of Legends. An immersive new dimension paired with procedural generation to spice every new world!

Spectrum Compat
Integrates Spectrum mechanics into other mods
Insectopia
A Buzzing Adventure
Palamobs [ Discontinued ]
An add-on for Palamod Recreated and Custom NPC. The different mobs will finally be able to burst into your adventures with their different dungeon styles, bosses, and NPCs.
Bizarre West
Face the bizarre world of wild west
Better Lost Items
Better Lost Items tracks despawned world drops, saves player death loot, and turns wandering traders into recovery merchants. Configure recovery costs, fetch supplies, burned loot, and void loot directly from Mod Menu.
Reapers & Ghosts
Adds the Violent Crystalline Corruption and its various Deadly Entity's to Minecraft
CreepyPasta Legends
Creepy Monsters awaken, Haunting players With Dark Legends and Fear.

Snowier Golems
Allows you to enchant snow golems for new abilities! (made for WinterJam)
Neutrality Redux
Neutrality Redux is a remake of a mod about the interaction, friendship and development of the Illager race!
Creeper AI Updated - NeoForge
Creepers with improved targeting, wall breaching, leaps, and powered spawns.
Villager Industries
Villager become useful by making them work for you
Universal Trinkets
Modular, command-powered trinkets for mapmakers, mod-pack devs, and power players.