Minecraft Java 1.21 Mods
Browse 860 free mods for Minecraft Java 1.21 — popular picks include Cobblemon and Stellaris Compatability Datapack, Just Jump Boat, nothing more, Mineplanet+.
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Cobblemon and Stellaris Compatability Datapack
A Cobblemon datapack that allows space themed pokemon(alongside some legendaries we all love) to spawn in Stellaris planets without suffocating.
Just Jump Boat, nothing more
Minecraft mod. This mod adds the ability for boats to jump using the spacebar. Nothing more.
Mineplanet+
마인플래닛 서버(mineplanet.kr)를 더욱 편리하게 플레이 해보세요!
EasyCrawl
Crawl anytime, anywhere! Just look down and sneak to start crawling, and press space to stand back up!
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.
The Galaxy Comes Alive (Formerly Avali Project)
Mod aimed to add content over multiple races, from avali to protogens, sergals and more..!
Cobblemon No Man's Craft Compatibility Patch
Fixes Cobblemon not spawning and asphyxiating on alien planets
qModeling
qModeling is a block-based modeling mod for Minecraft with a 3D editor workflow. It adds a dedicated Workspace block with freecam editing, Move/Rotate/Scale manipulators.
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!

Copper Rockets
This mod adds 5 new firework rockets to use with your elytra. Worry not about making thousands of rockets, when you can just make one of the new copper rockets!
Tiny Shields
Shields that are smaller, whilst maintaining proportions, to not block your beautiful player skin! Also affects first person, so the shield doesn't take up much space on the screen.
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.
Galaxy Tier Tagger
TierTagger for trneth.com, Turkey's largest Nethpot tierlist.
Create: AeroStar Northstar Comp
A fixed & expanded fork of the Create Northstar–Aeronautics compatibility mod: travel between planets and build space stations.
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
SpaceVulcan
Addon for Vulcan Anti-Cheat
Wise elytra
A server side mod to stop wasting rockets
Beatiful Keystrokes
Displays pressed keys (WASD, Space, Shift) and mouse buttons with live CPS counter on a fully customizable HUD.
Bubble Planet Collection
Will replace mobs with alternative versions of @Bubble_Planet0. 🌎
Traveler's Backpack ATM Upgrades
This mod adds backpacks to the game, like shulkerboxes, but can be upgraded to get more space, this is for those people that likes to travel with all his items

Close My Screen
Close GUIs by clicking the empty space.
Koi
Koi is a stark black-and-white CPvP pack built on pure duality — ghost-white diamond, void-black netherite, and a silent cosmic sky. ☯️
Minecraft Seven Mono (Font)
Default minecraft font, but with monospaced characters. Based on default font, not Monocraft.
Utility Rings
Adds some useful rings such as Ring of Flight and Elytra Rocket Ring
Nebula Panorama
Space, the final frontier at the start of your game.
CosmicPings
CosmicPings is a visual mod that allows for waypoints & team pings. Specifically made for CosmicSky & CosmicPrisons, brought to you by the Minecoin team.
Big Swords R x Cosmicore
Adds compatibility between Big Swords R and Cosmicore
Casino Rocket Additions - Unofficial Addon
More games for Casino Rocket mod
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!

Lenient Suggestions
Makes command suggestions kinder, they can now autocomplete things from namespaces other than minecraft
Dynamic Flight Control
This Mod Let's you fly With different game method, so you don't have use shift and space. You can fly up and down, just by pointing towards it.
CosmicTextures
Hundreds of custom item textures to improve QOL and overall gameplay experience on CosmicPrisons and CosmicSky.
Pocket Space Teleporter
This mod provides a teleporter to teleport players to a secure and private pocket space
BetterE-Chest
A plugin that doubles your enderchest storage space with customizable rows!