Minecraft Java 1.21 Mods
Browse 146 free mods for Minecraft Java 1.21 — popular picks include Planetmax's The Backrooms, Smp Craft, The Next Tomorrow Cobblemon (NO LONGER IN USE).
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Planetmax's The Backrooms
The Backrooms in minecraft.
Smp Craft
The modpack is based on exploration of space , automation and dungeons
The Next Tomorrow Cobblemon (NO LONGER IN USE)
The Next Tomorrow is a heavily-modded Minecraft 1.21.1 Cobblemon Modpack designed as a fully-custom, story-driven Pokémon-style survival world. It blends exploration, tech, strategy, and cosmic mystery into one cohesive experience.
Multiversal Misadventures - The Blockhead's Guide to the Galaxy
Traverse Infinite Dimensions to find a way to escape back to "normal" Minecraft in a truly unique experience!
Beyond The Ocean
A Mod that let´s you explore beyond the oceans of minecraft. New ocean themed planets on a post End level difficulty. New structures, mobs, items and technologies. New adventures and a new story ready to be told.
Project Conquest
A action pack rpg game with multi player and over 3 new worlds plus space based on a show called invincible with many powers and bosses plus npcs where you have to destroy worlds or bring peace and fight many foes and complete the story line
Cobblemon: Path Of Legends
Become a Pokémon Master! Train hard, battle harder. Defeat Team Rocket. Customize your journey. Join our community. Rise to the top!
MCG StarCraft
The Ultimate Space Exploration plugin
Over Club - MidSeason
Explore the steampunk world, its mysterious structures and endless space!
Aliens & UFOs
A mod that adds Aliens, their spaceships and much more!
Cobblemon Crossworlds
Catch Pokemon in Space! Modpack with Cobblemon, Infinite Dimensions, Stellaris, No Man's Craft, Bumblezone, The Aether, ProjectE, AE2, and Mekanism
Time Vortex (TARDIS) - Neoforge
Embark on a journey through time and space with this survival-focused TARDIS mod. Designed for NeoForge 1.21.1, it offers a balanced and immersive approach to piloting your very own space-time machine.
Space Race
Space Race is a Datapack that allows you to build your OWN rocket and explore the solar system!
Rockets & Dragons
For our good friend BrianAllenMW who passed away in Aug 2025
The Ultimate Interplanetary Project
A different approach to the Interplanetary Project pack that combines tech, magic and exploration with space and astral bodies as destination options.
Cobblemon Galaxy By Galaxy Dog
This is a cobblemon modpack with more integrations maked to have more fun and play with more features (cobblemon maps, pokemon menu, cobblemon addons)
Astral Travel
A space exploration datapack with things
Create Aeronautics Space Age
Merging Create Aeronautics with space exploration.
New Century Adventure
Let's go! It didn't start with the roar of a rocket, but a soft call from the depths of consciousness!
Create: Northstar - Redux Unhardcoded
Northstar Redux Unhardcoded: a transitional hardcode-removal fork unifying planet systems in a shared registry, keeping legacy compatibility, and offering Java/KubeJS extension paths until upstream gets data-driven planets.
Stellar Foundry
Stellar Foundry is a beginner-friendly tech, automation, and space progression modpack for Minecraft 1.21.1 NeoForge. Build your first factory, master advanced logistics, launch into space, and create an interplanetary industrial network.
Time Vortex (TARDIS)
Embark on a journey through time and space with this survival-focused TARDIS mod. Designed for NeoForge 1.21.1, it offers a balanced and immersive approach to piloting your very own space-time machine.
![Rustling Spots: Team Rocket Addon [Cobblemon]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/395199.webp)
Rustling Spots: Team Rocket Addon [Cobblemon]
Adds rare Jessie and James interruptions to Rustling Spots, turning exploration encounters into scalable Team Rocket trainer battles with unique dialogue and rewards.
Planetoids Skyblock
Skyblock world generation, but with resource rich planetoids.
Create Areo Naughts
Create: Areo Naughts Is a all inclusive Create, Minecolonies, Space exploration mod With Big cannons and Areonaughtics.
Galaxymon
Pixelmon with a bunch of quality of life mods
MedievalMon
Automate, organize, and explore a Pixelmon world with Create, AE2, Waystones, and quests through gyms and Ultra Space, all boosted by smart QoL mods.
horror things
its a horror game with the create mod and space how will this go
Createland
A modpack that combines technology, magic, and endless creativity! Automate your world with steam power, explore space with custom-built rockets, rely on high-tech, and dive into the fascinating world of magic. 🚀✨
My Secret Base
Adds a unique Secret Base dimension for each player! Teleport far away, generate a platform, build freely, expand your space, and share access with friends! Void safety included.
Random House - Interestelar
Travel through space in Random House 6!
Cobble Astral (Cobblemon)
Cobblemon Astral is a modpack based on the Minecraft mod that integrates Cobblemon (a Pokémon-inspired mod) with a space/astral theme, adding interplanetary exploration, advanced technology, and new challenges.
Glowstone Galaxy Create Edition
The glowstone galaxy community modpack, featuring Create, minecolonies and farmers delight!
Compressed Box
Create Compressed Boxes to gain space in your base
Void Dimension: Pocket Space
Adds a blank void dimension with levitation and chunk loading.
Create Cosmonautics Expansion
This space mod adds more planets and other space-related content to the game. It gives you new places to explore, along with extra items and features that make the game feel bigger and more fun.