Forge Mods for Minecraft 1.21
Browse 818 free Forge mods for Minecraft 1.21 — popular picks include Improved Genetics, Mebahel's Skeleton Revival, OpenToPublic.
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Improved Genetics
This mod basically adding DNA mechanic for every Living Entity and let users to create modified offsprings for their entities via custom machines.
Mebahel's Skeleton Revival
When death is no longer the end… their skulls flee to rise again. Summon, hunt, or suffer — in Mebahel’s Skeleton Revival, every skeleton gets a second chance.
OpenToPublic
Allows you to open LAN world to WAN and set server settings
Orbital Wither Skull Cannon
A Datapack/Mod of Blue Wither Skull Nuke Cannon which is able to penetrate obsidian, water and lava.
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.
Robotica
Robotica is a futuristic Minecraft mod set in a high-tech world filled with advanced robots, towering mechs, and powerful sci-fi weapons
Minecraft but the Floor Changes Every Day
Every time a day passes, the entire floor changes to a different block.
Remove Deepslate
Get rid of Deepslate from the world generation.
Just Beta Nether
Reverts the Nether completely to its original form!
[IU] No Damage Bee
No Damage Bee is an addon for IndustrialUpgrade that changes the mechanics of interaction with bees.
Azukaar's Fair Difficulty Overhaul
Per player difficulty, new expert+ difficulty, interesting mobs and mechanics
Just Scythe
Just a mod about scythe
Deadly Enderdragon
Minecraft mod to make the Ender Dragon much more aggressive and dangerous without new mechanics.
SmoothBreak
Switch tools, break smooth. Bring back the old days.
Parry It!
Adds the parry mechanic from ULTRAKILL
Treeliable
A highly configurable, simple mod that adds balanced tree felling mechanics!
Tileman
Locks players into tiles
Legacy Smithing Table
This mod allows player to use the old-school smithing mechanism.

Stable Cam
A stable third person camera mode for recording cinematics and playing in a new perspective. Basically the opposite of Freelook.
Farmer's Cutting Everything
Lets you cut most items into ingredients using cutting board mechanic.

🐟Friendly AxolotlS🐟
Axolotls wont kill your fishes anymore, they even have a new diet...
Fine-Tuned Weaponry
This mod offers ALOT of new Items and mechanics
10 Slots / Only Hotbar
You can only access your hotbar and every other inventory slot is locked
Craftable Items MOD
Make uncraftable items Craftable
MindOfTheColony
Mind of the Colony is a mod that transforms your settlement inhabitants from silent workers into living, thinking individuals. This project moves beyond typical gameplay mechanics to answer a simple question: what are your colonists really thinking?
Ember's Castles And Keeps
Adds big new castles and towers with traps, enemies, loot and even parkour challenges!
Combat Expansion V4 REWRITTEN
This mod adds new weapons, tools, mobs, mechanics and much more, while maintaining the vanilla style of play and compatibility with other mods.
Ekipa Mod
The mod adds a lot of different things related to the team, eg. Ice cream of the team and their extensive mechanics, drinks, party CDs, mobs (no nowciax), notebooks, boxes, phone cases and many other things.
Mob Dice Attributes
Every mob. Every spawn. A fresh roll. A mod that dynamically converts mob attributes into a range using tabletop RPG dice mechanics.
Ice Enchantments
This mod adds the Frost Aspect and Frost enchantment for swords and bows, respectively. For Frost Aspect, there is Frost Aspect I and Frost Aspect II.
Trade & Enchant Overhaul
Modifies the mechanics of trading enchantments.
Behind the Cubes [Backrooms]
Explore interconnected Backrooms levels with unique mechanics, items, and secrets.
TNT Throw
allows you to pickup TNT's as Lit TNT's and throw them
[SBW] Drill, baby, drill!
Power your SuperbWarfare vehicles with real fuel.
Better Physics
Better Physics is a Minecraft mod pack designed to elevate your gameplay experience through enhanced realism and immersive mechanics. Featuring meticulously crafted mods that revamp the game's physics engine, players will enjoy more dynamic interactions
LovelyLib
The robot-specific library shared by all Lovely Robot variants. Handles the robot type system, shared animation profiles, and save migration so that Legacy, Tribute, and Reboot don't duplicate core logic.