Minecraft Java 1.21 Mods
Browse 519 free mods for Minecraft Java 1.21 — popular picks include LAir's Bosses, ScalingMobs, Minecolonies - Order and Chaos.
Updated daily
LAir's Bosses
This mod adds two bosses to the game, The Spirit of the Forest and Zeus, along with a new structure: Olympus.
ScalingMobs
Adjusts the stats of bosses and mobs, multiplied by the number of players on the server.
Minecolonies - Order and Chaos
This is the official modpack from the youtube serie "Minecolonies Caos e Ordem". Create your own colonie in a dangerous world with buffed monsters and bosses.
Waypoints and Bossbars
Adds raiders, trial mobs, skeleton horsemen and bosses to the locator bar and gives trial spawners and skeleton traps bossbars.
Grace999
GracePlugin provides configurable, per-world grace periods with PvP and mob damage protection, boss bar countdowns, sound alerts, and customizable safe zone regions with flag-based protections.
Deltarune Project
This mod adds various elements of Deltarune chapters 1 and 2 to Minecraft. There are many new materials and bosses added to the game.
Vital
A mod which adds clean, minimal, but readable SHADER COMPATIBLE health bars to each mob in the game (optionally replacing boss bars with colour coded bars per active boss too).
Diary of an 8-Bit Warrior
Experience Aetheria like a Terrarian! Complete quests, kill bosses, and level up your skills! Maybe you'll even meet Runt and his friends…
Harry's Hostile Expansion
Adds many different hostile mobs, mechanics, structures & bosses.
Winter Drop Ruined
Adds the Krakentilus boss, 2 new Nautilus variants, and some spear related content
Nice Blockhead Mobs
Adds cute, little Mobs (and 1 new Boss) made out of Miniblocks. No Ressource Pack required.
Undermagic II
Progression expansion featuring flashy weapons, structures, and a challenging boss fight
The Ice Warrior
datapack that add an ice theme mid-game boss
Colossus Boss
Giant boss formed from the environment and attacking and hurling chunks of environment at you!
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.
![THE SKELETON BOSSES | CUSTOM MOBS [1.20 - 1.21.1]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/spiget/42348.webp)
THE SKELETON BOSSES | CUSTOM MOBS [1.20 - 1.21.1]
Incorporate custom bosses with custom rewards, create a new boss dynamic
OHPS10 Boss
Adds the boss "Obama Harry Potter Sonic 10"
Bosscraft 2: Remake
Bosscraft 2: Remake is an unofficial project inspired by Sthullen's famous mod for older and outdated versions of Minecraft. This project takes the iconic mechanics of the classic mod and integrates them into modern versions of the game.
PixelColonies: Arcane Journeys
Dimension and Exploration Modpack with very hard Bosses and other Creatures, as well as many diffrent dimensions and Quests
ReniDrags Molten Mayhem!
Explore the new biome that brings dungeons, dimensions, a custom boss, cool new custom items and of new tools!! Get on this mod baby!! Its super duper cool (source trust me bro)
Deepcraft
A hardcore Minecraft mod with new ore, weapons, bosses, mobs, a unique dimension, haunting music, and forgotten secrets waiting to be uncovered.
TYAZVR Spider-Man
This mod is a Spiderman mob at add new things to do Bosses to fight this and is not the best but try
ZKQ – Zombie King Quest (Boss Fight + Structures + Progression)
Adds a powerful Zombie King boss, custom structures, Frux ore progression, and epic weapons for adventure-focused survival gameplay.
RogueCraft Plus
An addon to the RogueCraft datapack! Adds new abilities, structures and a boss!
Theosis
Plugin-ready RPG survival with loot, gems, bosses & biomes. Thesis-style modularity. Multilanguage Apotheosis-inspired
![[WIP] DragonFist Legacy](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/275866.webp)
[WIP] DragonFist Legacy
(INCOMPLETE and WIP) Adds martial artists to Epic Fight, along with new content, structures, and mini-bosses throughout the world.
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!
The World of Crackers
A new cracker biome with a new boss!
![[MobArena Addon] HavenArena - Extra Customizable Features](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/spiget/46976.webp)
[MobArena Addon] HavenArena - Extra Customizable Features
Add extra customizable features to your MobArenas, including new boss abilities and monster glow.
BossLand v2.3
Boss Land extends vanilla gameplay by adding 15 unique custom bosses across multiple tiers.
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.
Giant Boss
Makes the unused giant into a boss fight and adds a new food as a reward.
Boss Checklist DivineRPG Addon
Adds DivineRPG bosses to Boss Checklist.
![Palamobs [ Discontinued ]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/279751.webp)
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.