Forge Mods for Minecraft 1.21
Browse 5,334 free Forge mods for Minecraft 1.21 — popular picks include Fortunate Ancient Debris, Sodium Add-on: Substrate, pv-addon-soundphysics.
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Fortunate Ancient Debris
Fortune works on ancient debris! Use fortune-enchanted pickaxes on ancient debris for more netherite scraps
Sodium Add-on: Substrate
Optimization add-on for Sodium for the bottom and/or top layer(s) of the world

pv-addon-soundphysics
Compatibility add-on for Plasmo Voice and Sound Physics Remastered mod. With this add-on Plasmo Voice will be affected by Sound Physics.
Inventory Weight
Add weight effects to the player's inventory
Mekanism: More Thermal Evaporation
Adds a More Powerful Thermal Evaporation !!
Sign Plates: Letters & Symbols
This is your sign to sign bigger!
Animal Garden - Spotted Hyena
This mod adds the Spotted Hyena into the game.
Realistic Nametag
Makes name tags behave realistically, hiding them behind blocks and objects.
Bonded
The more you use your tools, weapons, and armor, the stronger they become, gaining bonus stats over time.
Heralds II - Flags, Banners, Heraldry & More!
Banners, Flags & Heraldry brought to minecraft in a vanilla friendly way!
Dynamic Trees - Croptopia
Compatibility Mod between Dynamic trees and Croptopia
TNT Grenades!
Chuck TNT at your enemies!
OpticManager
#synchronizedConfig
Serilum's Spawn Bundle
📦 A mod bundle of all spawn mods Serilum has released, see different mob types!
Extended Terminal
Expands the AE2 terminal with other mods.
Simple Health Bar (Forge/Fabric)
Simple Health Bar mod that changes the way your health is displayed
Inventory Management Deluxe
Yet another inventory sorting mod — but this time, it's built to be the best.
Create: Crafts & (More) Additions
Silver Ore, proper Electrum recipe, and more content for Create Crafts & Additions.
Stronger Skill Tree for pufferfish's skills (unlock all)
Version of "Stronger Skill Tree" for those who don't like choices or just want to become REALLY strong!
Old fisherman swamp house
adds an old fisherman’s house to swamp biomes, with villagers and aquatic mobs beneath it
Potion Core Reborn
Revives Potion Core and bring it to modern versions
Cobblemon Field Moves
Adds the in-world effects of field moves and abilities to Cobblemon.
Infinity Nexus Core
A core mod for Infinity Nexus Mods
Animal Garden - Alligator Gar
This mod adds another Apex Predator, the Alligator Gar into the rivers of your world.

Mod Sets
Control mods loading with gui. Useful for modpack and server with optional function. And also for geeks want to control mods without file operating.
Save Loot Tables
Prevent Vanilla from discarding loot tables when one or more entries are invalid.
Planeta Vegetta (Unofficial)
All the mods from the new Vegetta777 series!
Cobblemon Whiteout
What if your player got KO'd when your Cobblemon team wiped out, like in the games?

Epic Dungeons: A Roguelike Minecraft
Awesome uniquely varied epic dungeons, from the buried Crystal Castle to the spider-infested Forgotten Sewers. Your traveller's journey begins!

Recipe Tweaks
This is a data pack all about improving crafting. Everything you never even knew you wanted, but needed, AND everything you always knew you wanted and needed. Basically, everything you've ever wanted and/or needed.

Torcherino(Unofficial)
various torches that increase the tick rates of tile entities
Easy CraftTweaker
Gui for Craft Tweaker that allows you manage your recipes with ease.
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.
Evolved Mekanism Extras
Evolved Mekanism and Mekanism Extra add-ons
Aqua Delight
Adds to Aqua dishes and food. Vanilla style.

Stronger Skill Tree
A skill tree mod with the opportunity to choose your own path and become very strong needs pufferfish's skills