Minecraft Java 1.21 Mods
Browse 69 free mods for Minecraft Java 1.21 — popular picks include Mob AI Tweaks, Incendium Biomes Only, CobbleBoss.
Updated daily
Mob AI Tweaks
Tweaks certain mob AIs, major or minor. Reworks the Wither and Ender Dragon boss fights!
Incendium Biomes Only
Removes structures, items, mobs and bosses from Incendium, leaving only the biomes and terrain.
CobbleBoss
A mod that allows you to infinitely add and customize your own exclusive Bosses in the Cobblemon world.
TabTPS
Monitor your server's performance in the tab menu, boss bar, and action bar
KEO RPG optimized
Keo RPG is a fully Spanish, highly optimized modpack with over 200 mods that lets you rediscover Minecraft with freedom, RPG classes, magic, and epic bosses.
Cobblemon - Poke Legends
Pokemon Cobblemon Pack - QoL and Performance mods! The server included in the pack has Raids, Gyms, Mega Evolution, Tera, Alpha Bosses, Paradox, Legendary Pokemon, GTS and more!
CREATE and COLONY - Better features with Create and MineColonies
The ultimate experience: Create automation, MineColonies management, epic bosses, and massive exploration—all with top-tier optimization. This modpack has an official server! IP: 92.222.138.235:26843
Aether Plus
☁️ Explore The OG Aether 👑 Conquer Multiple Bosses 🐦 Tame Moas & Fly them 🌱 Beginner Friendly |✅Co-op • ✨Optimized & Shaders
![[ Spellnomia ] - Iron's Spells 'n Spellbooks magic modpack](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/curseforge/214737.webp)
[ Spellnomia ] - Iron's Spells 'n Spellbooks magic modpack
Master arcane mana and alchemy in this RPG adventure with Iron's Spells, mages, wizards, dragons, bosses, and grimoires. Explore dungeons, dungons, and biomes with opti performance, shaders, and immersive medieval fantasy sorcellerie
Mythic Horizonss
An epic RPG & Adventure modpack for Fabric! Features overhauled combat, massive boss fights, breathtaking new biomes, and maximum FPS optimization.
RainApricot Spawn Notification (for Pixelmon)
This mod sends in-game notifications immediately when BOSSes, Legendary Dens, Legendary Pokémon, Master Ball Reward Chests, and wild Shiny Pokémon appear in your Pixelmon world, ensuring you never miss them again!
Boss Results
Defeating a boss sends a clickable chat message that shows performance statistics for every participating player in that boss fight.
Moar Bosses
Moar Bosses adds 7 types of randomly spawning bosses into your Minecraft world. Each boss has 3-5 unique and crazy magical attacks, and drop cores that can be used to craft magic wands. The bosses have custom textures using Optifine or Reselect or CET.
Antique Runes: Medieval RPG
Get ready for a unique Medieval RPG modpack, featuring many new armors & tools. And also features, such as leveling, bosses, quests, dungeons and many more!
Cobble+ SMP
This modpack brings together the Cobblemon mod with enhanced Minecraft gameplay, featuring breeding, TMs, new tools, bosses, and dungeons for an epic adventure.
Cobblemon Origins Modpack
The best Cobblemon Modpack for performance, aesthetic and QOL features that you'll ever see. The server includes Raids, Ranked, Bosses, Player Gyms, Breeding, Cosmetics and so much more custom features!
LifeSteal Launcher
LifeSteal Dungeon: The official 1.21.4 MMORPG Modpack! Dive into a pure action dungeon. Master special attacks and face epic bosses. Optimized for performance. Download and join play.lifestealmc.fr for an intense MMORPG adventure!
DragonForge
Dragon Forge is a RPG–survival with skill-gated gear, Create-powered industry, mythic bosses & dungeons, and lush worldgen. 200+ content mods + 90+ perf/QoL. Built for multiplayer on MysticHorizonsMC.
Cobblemon Gamma
Pokemon Cobblemon Pack - QoL and Performance mods! The server included in the modpack has Raids, Gyms, Mega Evolution, Tera, Alpha Bosses, Paradox, Legendary Pokemon, GTS and more!
![AutoMessageSystem ✅ [1.18-1.21] Optimized ⚙️ Folia supported!⚡](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/spiget/49981.webp)
AutoMessageSystem ✅ [1.18-1.21] Optimized ⚙️ Folia supported!⚡
Full auto-message system! Chat, BossBar, Title and ActionBar! PlaceholderAPI support!
tomocraft
A Vanilla+ experience with subtle enhancements. Improved animations, better terrain, new structures, QoL tweaks, a minimap, and even a few custom bosses. Perfect for players who love vanilla Minecraft but want a smoother, richer, and slightly expanded adve
Mythic Horizons
"Mythic Horizons" is a carefully curated Vanilla+ modpack that elevates your Minecraft experience with quality-of-life improvements, stunning new biomes, powerful bosses, and hidden structures—while staying true to the essence of the game. Embark o
Boss Results {Data Pack}
Defeating a boss sends a clickable chat message that shows performance statistics for every participating player in that boss fight.
Massive MMO
A fantasy MMO-style modpack featuring RPG progression, unique classes, skill leveling, dungeons, bosses, and an open-world adventure experience. Designed for cooperative multiplayer with performance upgrades for smooth gameplay.
Explorisa
This modpack is centered around becoming stronger as you explore new structures, biomes, and even whole new dimensions, all the while defeating strong bosses, in a medieval/fantasy rpg setting.
Daily Boss x Cobblemon
DBxCobblemon is a compatibility bridge provided to integrate [DailyBoss] with [Cobblemon]
DittoLand Cobblemon
Dittoland is a 1.21.1 Cobblemon world featuring all 1025 Pokémon and the ultimate battle combo of Megas, Z-Moves, Dynamax, and Tera! ⚔️ Harness a player-driven economy with custom gyms, collectible plushies, and elite Alpha Bosses. 🏆
Better of Fabric 3
Offers the latest & best of Vanilla+ Fabric mods on 1.21 | Explore breathtaking biomes & structures | Fight new bosses | Enter new dungeons & dimensions | Vanilla will feel empty after this
X Journey
Dive into TX-Journey, where survival meets adventure, all with the classic vanilla feel. Build, craft, and explore a world filled with mysteries, from daily tasks to epic boss battles. Upgrade your enchantments and uncover endless possibilities.
capybara’s play oritech
A 1.21.1 modpack combining futuristic tech, epic bosses, and chill capybaras — optimized (somewhat) for even old PCs.
Fractured Vanilla
A 1.21.1 Fabric modpack with 300+ mods enhancing Minecraft. Enjoy stunning biomes, smooth animations, optimized performance, epic bosses, and QOL tweaks.
TheLounge Official Modpack
The ultimate experience for TheLounge server. An experience more integrated with it's custom equipment and bosses alike. Play now even on vanilla at: play.theloungemc.com
Matt's Fat Pack
Explore mystical dimensions, conquer legendary bosses, and engineer impossible contraptions.
Pixeltheris
Epic RPG Modpack 1.21 – explore dungeons, master magic, face challenging bosses, build and decorate, and enjoy enhanced combat, progression, and quality-of-life features. Optimized for multiplayer and private servers.
Mine RPG
This is combination of mods to add more content to Minecraft including bosses, biomes, creatures. This is more RPG adventure style while keeping all vanilla. No extra metals or materials are added on this pack.
![Grandia Dungeons [Modpack]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/115224.webp)
Grandia Dungeons [Modpack]
A dark fantasy dungeon roguelike modpack with bosses, classes, cursed loot, magic, custom UI and atmospheric progression.