Minecraft Java 1.21 Mods
Browse 1,194 free mods for Minecraft Java 1.21 — popular picks include Dynamic Difficulty More Hard, SolarBossBar, Kaizo Knight Boss Theme for Ender Dragon.
Updated daily
Dynamic Difficulty More Hard
Level Adjustment for Mobs and Bosses in the DENLAND Modpack by Guzk
SolarBossBar
一个简易轻体量且好用的BossBar插件
Kaizo Knight Boss Theme for Ender Dragon
the vanilla boss theme is kinda lame ngl
Attack Mastery
Grindy attack skill progression! Kill levelled mobs to level up your Attack Mastery (max 200), gaining up to +1000% damage. Bossbar tracks XP — perfect for RPG servers with Levelled Mobs!
⚡EvilMobs - Create your custom bosses
Multifunctional Bosses with simple configuration
Amethyst Age
Expand Minecraft's amethyst progression with new tools, armor, weapons, food, a custom biome, Crystal Merchant, Crystal Warrior boss, advancements, and unique abilities like 3×3 mining, Tree Chopper, and Crystal Charge! 💜
Monsterwalll's Bosses And Stuff
A mod I made that adds Bosses, Structures and more! Note that this is my first mod so please comment what you think should be fixed in future mods.
Endorium Mod
Endorium is an end-game expansion mod for Minecraft that introduces a new mini boss, new wood type and new tier of equipment beyond Netherite.
chicken boss
Adds a powerful God Chicken boss that attacks players by spawning creepers and iron golems.
ItemPickupBossBar
拾ったアイテムを可視化する
HARD NEW
A technologically advanced game with a focus on realism! Shaders, automation, smart NPCs, hundreds of animals, and hardcore bosses. Explore this vibrant world with your friends using the built-in voice chat.
![[EMBER] Death Totems](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/156000.webp)
[EMBER] Death Totems
Ember Death Totems turns every player death into an immersive tombstone recovery moment. Instead of items exploding across the ground, a glowing ember-powered gravestone rises at the death location — complete with holograms, bossbar and more.
Chain Accessories
Wear chains like a boss
Telum Solaris - At the Forest's Edge
Telum Solaris aims to add new weapons, armor and boss to minecraft for every stage of minecraft's progression. It is currently my first and only project!
Soul Powers
A comprehensive RPG Soul system with unique abilities, progression, and bosses.
BulsciCraft
Enjoy this brand new mod that adds New Dimensions, Mobs, Items, Blocks, Unusual things and even a bossfight...
Magma Craft Remastered
A small mod adds: new biome, new ores, new structures, new boss, new tools, and more!
Explorer's Journal
A chat-driven exploration journal. Discover biomes and structures, get notifications, details, toggle a bossbar, view your full journal with /trigger
MCraftEvents
A modern auto-events plugin (Volcano, Geyser, Chest) for Paper 1.21+ featuring BossBars, MiniMessage formattin
Arka Announce
A powerful Minecraft plugin for sending customizable screen announcements with Titles, ActionBars, Chat messages, and a dynamic BossBar countdown system.
timerpluginmutils
Adds a fully customizable timer system to your Minecraft server! Features a global timer visible to all players, personal timers for individual players, BossBar display, and automated rules like stopping the timer when the Ender Dragon dies.
NxControl
NxControl is an advanced staff plugin that lets OP players control players or mobs using simple keybinds, with GUI, bossbars, and freeze system built-in. It’s lightweight, powerful, and perfect for moderation, trolling, or cinematic gameplay.
Boss Radar
Craft a special compass that senses powerful mobs lurking nearby. Hold it to see a color-coded ring around your crosshair with the boss's name and distance, turning red as danger closes in — perfect for staying alert to the Ender Dragon, Wither, Warden
randomitems-mod
Adds /randomitems, /randommobs, /randomweapon, /randomarmor, /randomtool and /randomquest commands that periodically give random items, spawn random mobs, swap your gear, or assign 5-minute random quests with a boss bar and personal sidebar.
ThicMobKai - Dungeon, Boss and Mob RPG System
A premium dungeon, boss, and mob progression plugin with EN/VI support.
Berry's Land
**Berry's Land** is an adventure mod that introduces a beautiful new dimension with custom progression, unique creatures, giant trees, Compote Rivers, and an exciting boss fight. Discover a mysterious world and earn powerful rewards!
ArenaWaves
Simple wave arena with bossbar progress and vanilla mobs.
Mars mod!!!
this mod adds mars along with bosses and lore. this is my first mod that I will put on modrinth.
Timber´s Call
Timber’s Call adds Grimbark, an automatic woodcutting NPC, unique workstations for progression, mystical crafting, and a boss fight — all without a resource pack. Answer the call!
néant+
Adds a new dimension and mobs, bosses. With ores and armor to match. The mod has a dark visual theme.
Floreláis
Created in 1 week for my high school art class. It is a very basic mod adding 6 flowers and a boss. Similar feel as old 1.7.10 mods.
Chariz's Mayhem
A Minecraft Mod That Aims To Add Fun Things Into Minecraft, Such As New Mobs, Bosses, Weapons, Tools, Armor etc. Created By The Maniac Himself, DarkChariz
sSumoPvP
A lightweight and configurable SumoPvP plugin for Minecraft servers, featuring custom arenas, 1v1 fights, holograms, bossbars, protection systems, and staff-controlled events.
Boss The Eternal Warden | ⚠️ Difficulty: EXTREME
Death is just the beginning... Witness true immortality
Voidshard_abyss
The Voidshard abyss mod adds the voidshard abyss dimension, bosses and arena battles.
Jello's Minigames
A fully customizable minigame plugin with king of the hill, boss events, and destory the core - works with teams or solo players