Forge Mods for Minecraft 1.21
Browse 5,334 free Forge mods for Minecraft 1.21 — popular picks include Project Resonance for MineColonies, [TACZ/SBW]Suppression, MoreTools&Armor+.
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Project Resonance for MineColonies
A blueprint pack aimed to restoring the Ancient City using MineColonies
[TACZ/SBW]Suppression
This mod add suppression effect for TACZ
MoreTools&Armor+
MoreToolsAndArmor+ expands Minecraft by adding new functionality to previously unused materials, turning them into powerful tools and armor.

Stellarity ~ Lite
Complete rehaul of The End with 23 new gorgeous biomes, world-gen only!
Mekanism: Ponders
Adds Ponder Scenes for the Mekanism and Mekanism: Generators Mods!
Visual Health
Add visible damage to hurt mobs and players!
[NoCube's] Realm RPG: Treasure Balloons
Adds rare balloons flying above players. Shoot them down to get loot!
PointBlank: Jelly
A continuation of the Vic's Point Blank gun mod, mod compatibility, armors and much more!
Twemoji
Pixelated Twemoji emojis in chat, with a picker, shortcodes, animated emojis, and datapack support.

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.
Tooltip Creator
Create tooltips with just one simple config file!

Village Nullifier
Disables village generation.
TarotCards: Remastered
Adds the 22 Major Arcana Tarot Cards with unique passive bonuses
Fancy Frames
Adds material-based frames to customize paintings and item frames

Allay Upgrades
QOL improvements to allays
Spice of MineColonies Life: Carrot Flavor
MineColonies's citizens can be get bonus hearts eating a variety of foods.

World Editor
Make building easier with the World Editor datapack! Datapack has singleplayer and multiplayer support.
Easy Name Tags - Rename Nametags!
Allows for easy naming of nametags without an anvil using a stylish GUI.
Lios Seafaring Dungeons
Complex Underground & Oceanic dungeons!
Infiniverse
API for creating dynamic dimensions
Mindly Presence
Something tries to break your mind... Your stress will grow but... Try to resist..
VS / Sable Hose Connectors
Better transport between Valkyrien Skies ships & Aeronautics(Sable).
Tinted Lamps
Colored Glowstone and Lamps
Player Corpses
A highly configurable mod/datapack that adds lootable corpses where the player died, allowing them to retrieve their items whenever
Loot Integrations: Born in Chaos
Adds better loot to Born in Chaos structure chests, including modded loot
ShellBound for AirShip
Add an elegant airship drifting through the sky.

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

Overgrown's Cobblemon: Darkrai
Darkrai missing from your Cobblemon world? This pack fixes that!
Easy Mob Spawn Control - spawn rate, mob cap, disable bad mobs
Quickly adjust spawn rate, ban mobs, change mob limit and more with in-game menu
Shrug It Off
Adds a chance for Toughness to block weak attacks
Timeline
A shared advancement timeline with a custom calendar and Hall of Fame
Carryon - Patched (Unofficial)
Direct drop in replacement for the Carryon mod by Tschipp

Mega Showdown Item Pack
Adds recipes and loot tables for Cobblemon: Mega Showdown

Leather Bundles
Bundles, but with leather. Also keeps original rabbit hide recipe intact. (1.20.5 [and, presumably, 1.20.6])
Dungeon Conquest: Stormborn Tomb
Vast tomb ruins containing great treasures guarded by heroes of the past
Speed Stick
Craft a stick that grants speed ability when held in the main hand