Neoforge Mods for Minecraft 1.21
Browse 490 free Neoforge mods for Minecraft 1.21 — popular picks include Deepcraft, Boss Checklist - Mob AI Tweaks Compatibility, Rick's Roll.
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Deepcraft
A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.
Boss Checklist - Mob AI Tweaks Compatibility
Integrates the Ominous Phantomare boss as well as the reworked Elder Guardian and Ravager from Mob AI Tweaks as entries in the Boss Checklist mod.

Rick's Roll
Adds rick astley as a boss and a rickroll music disk.
Temples & Templates
Adding more boss encounters and tools to spice up your minecraft playthroughs!
CrisisCraft
This mod pack features Magic, Battles, Bosses, and a new immersive gameplay experience.
SC Final Adventure
Challenge countless bosses while grinding for god-like gear and dive into brutal endgame gateway bossrush
Broadcast Pixelmon
BroadcastPixelmon is a server-side Pixelmon sidemod that broadcasts global chat messages when Legendaries, Shinies, Bosses, Ultra Beasts, and Raid Legendaries spawn, including coordinates, biome, and clickable JourneyMap waypoints.
Peaceful Alternative
Blocks all hostile mob spawns (incl. spawners, bosses, summon command) and replaces hostile- & animal-kill-based recipes with peaceful alternatives in the future - full non-combat progression.
Cobblemon Dark
A Cobblemon modpack, featuring Create, Create Aeronautics, exploration, trainers, bosses and more.
POIs and Raid-Bosses
Trigger raid‑style events at custom Points of Interest where players sacrifice items for rewards and hidden enemy challenges.
ProtoMP
The world has fallen. Manage thirst and radiation, wield modern weaponry, and engineer your survival against deadly mutants and bosses in a ruined world.
Boss Checklist DivineRPG Addon
Adds DivineRPG bosses to Boss Checklist.
Prism Drift
Balanced without magic and guns, adventure filled with loads of dimensions and various bosses
TensuraNewWorld
Welcome to Tensura New World, Select your race, Level up your skills, Explore, Fight bosses, And become the character you wanna be!
Ivar's Bosses
Ivar's Bosses is a mod that introduces formidable bosses to the game, featuring unique attack patterns and special summoning rituals. These ancient creatures will unleash their wrath upon anyone who dares disturb their eternal slumber.
We The Horsemen
We The Horsemen – A modded Minecraft experience focused on economy, automation, and adventure. Build with Create mod, trade in a player-driven economy, and conquer bosses across dimensions. Hard mode, no easy teleportation—logistics and teamwork matter!
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.
BossCrab's Item Expansion
A mod made to expand items and gameplay! Have Fun!!!
Tensura Abyssal Reincarnation
Tensura Abyssal Reincarnation is a dark, cozy SMP modpack blending magic, exploration, and survival. Master spells, automate with Create, and face deadly bosses in a semi-anarchy world where freedom rules and every choice shapes your path.
re;Tensura
🧬 ᴿᵉ;tensura — A TTIGRAAS Minecraft SMP featuring factions, PvP, skills, nations, bosses, dungeons, and constant progression. Active staff, balanced gameplay, events, and a custom 1.21.1 modpack. Join: https://discord.gg/Ya6BA38uUY
CrazyMC - A Special Apocalypse | Apocalypse with Quests!
A chaotic Minecraft adventure featuring zombie hordes, powerful bosses, firearms, magic, advanced technology, massive dungeons, and endless progression.
The Epic Player Boss
Adds a new player like NPC boss which will give you an epic boss fight.
All The Maus 1
An epic adventure awaits with many bosses, dimensions and biomes!
Enigmatica 10 - Bosses Unleashed
This modpack adds more bosses to the Enigmatica 10 modpack
Herobrine Boss
A herobrine that watches you, a herobrine dimension, and so much more!
Kings & Monsters
An adventure and progression mod featuring the Ogre Tribe, guarded outposts, escalating patrols, powerful relics, a massive fort, and a multi-stage boss fight.
Headaches!
Headaches! is a Minecraft mod that adds new structures inhabited by the most absurd and unconventional mini-bosses—all characterized by having disproportionately large heads. Discover a challenging new adventure!
Electric Boogaloo
Adds a new zombie dancing boss, Electric Boogaloo with his iconic Backup Dancers from the Plants Versus Zombies Games
Monsters Unlimited
A challenging Minecraft mod featuring boss monsters! Starting from day ten, a powerful boss monster will appear in your world every five days.
SC Final Adventure - Machines
Hunt bosses, farm their essence through Easy Mob Farm and Create New Age, and craft your way to the End in a guided 1.21.1 factory-and-adventure pack.
NeoCreate: Cataclysm
Empower your "Create" factory by beating "Cataclysm" bosses
Bosses'Rise Hide Dodge
A small addon to the Bosses'Rise mod that automatically hides the dodge roll icon when not in danger.
Summonable Steve
A summonable Steve boss with complex AI and behaviors
Super Duper Modern Vanilla Plus
Large modpack that completely changes experience revamping world generation, adding more bosses, food, tools and still makes the game feel vanilla-like!
Norious
Bored of not Having enough strong bosses to fight? Ever Wanted To become a God and fight Demons In Minecraft? This is the mod for you.
Elexir [CSD]
Step into ELEXIR - This modpack is magic, automation and adventure. Here you can explore the world as well as magic or mechanisms to make life easier. Ancient artifacts, bosses other worlds are created for gameplay variety