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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
1.21

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.

2.6kdownloads
Just Jump Boat, nothing more
1.21.10fabric

Just Jump Boat, nothing more

Minecraft mod. This mod adds the ability for boats to jump using the spacebar. Nothing more.

2.6kdownloads
Mineplanet+
1.21.4neoforge

Mineplanet+

마인플래닛 서버(mineplanet.kr)를 더욱 편리하게 플레이 해보세요!

2.5kdownloads
EasyCrawl
1.21.5

EasyCrawl

Crawl anytime, anywhere! Just look down and sneak to start crawling, and press space to stand back up!

2.5kdownloads
The Next Tomorrow Cobblemon (NO LONGER IN USE)
1.21.1fabric

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.

2.5kdownloads
The Galaxy Comes Alive (Formerly Avali Project)
1.21.1neoforge

The Galaxy Comes Alive (Formerly Avali Project)

Mod aimed to add content over multiple races, from avali to protogens, sergals and more..!

2.5kdownloads
Cobblemon No Man's Craft Compatibility Patch
1.21.1

Cobblemon No Man's Craft Compatibility Patch

Fixes Cobblemon not spawning and asphyxiating on alien planets

2.5kdownloads
qModeling
1.21.1neoforge

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.

2.5kdownloads
Multiversal Misadventures - The Blockhead's Guide to the Galaxy
1.21.1neoforge

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!

2.4kdownloads
Copper Rockets
1.21.1neoforge

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!

2.4kdownloads
Tiny Shields
1.21.4

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.

2.4kdownloads
Beyond The Ocean
1.21.1neoforge

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.

2.4kdownloads
Galaxy Tier Tagger
1.21.5fabric

Galaxy Tier Tagger

TierTagger for trneth.com, Turkey's largest Nethpot tierlist.

2.4kdownloads
Create: AeroStar Northstar Comp
1.21.1neoforge

Create: AeroStar Northstar Comp

A fixed & expanded fork of the Create Northstar–Aeronautics compatibility mod: travel between planets and build space stations.

2.4kdownloads
Project Conquest
1.21.1neoforge

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

2.4kdownloads
SpaceVulcan
1.16.5

SpaceVulcan

Addon for Vulcan Anti-Cheat

2.4kdownloads
Wise elytra
1.21.11fabric

Wise elytra

A server side mod to stop wasting rockets

2.3kdownloads
Beatiful Keystrokes
1.21.4fabric

Beatiful Keystrokes

Displays pressed keys (WASD, Space, Shift) and mouse buttons with live CPS counter on a fully customizable HUD.

2.3kdownloads
Bubble Planet Collection
1.21

Bubble Planet Collection

Will replace mobs with alternative versions of @Bubble_Planet0. 🌎

2.3kdownloads
Traveler's Backpack ATM Upgrades
1.21.1neoforge

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

2.2kdownloads
Close My Screen
1.21.10fabric

Close My Screen

Close GUIs by clicking the empty space.

2.1kdownloads
Koi
1.20

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. ☯️

2.1kdownloads
Minecraft Seven Mono (Font)
1.20.2

Minecraft Seven Mono (Font)

Default minecraft font, but with monospaced characters. Based on default font, not Monocraft.

2.1kdownloads
Utility Rings
1.21.1neoforge

Utility Rings

Adds some useful rings such as Ring of Flight and Elytra Rocket Ring

2.1kdownloads
Nebula Panorama
1.21.11

Nebula Panorama

Space, the final frontier at the start of your game.

2.1kdownloads
CosmicPings
1.21.11fabric

CosmicPings

CosmicPings is a visual mod that allows for waypoints & team pings. Specifically made for CosmicSky & CosmicPrisons, brought to you by the Minecoin team.

2.1kdownloads
Big Swords R x Cosmicore
1.21.5neoforge

Big Swords R x Cosmicore

Adds compatibility between Big Swords R and Cosmicore

2.1kdownloads
Casino Rocket Additions - Unofficial Addon
1.21.1fabric

Casino Rocket Additions - Unofficial Addon

More games for Casino Rocket mod

2.1kdownloads
Cobblemon: Path Of Legends
1.21.1fabric

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!

2.0kdownloads
MCG StarCraft
1.18spigot

MCG StarCraft

The Ultimate Space Exploration plugin

2.0kdownloads
Over Club - MidSeason
1.21.1neoforge

Over Club - MidSeason

Explore the steampunk world, its mysterious structures and endless space!

2.0kdownloads
Lenient Suggestions
1.21fabric

Lenient Suggestions

Makes command suggestions kinder, they can now autocomplete things from namespaces other than minecraft

2.0kdownloads
Dynamic Flight Control
1.21.11forge

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.

2.0kdownloads
CosmicTextures
1.21.10fabric

CosmicTextures

Hundreds of custom item textures to improve QOL and overall gameplay experience on CosmicPrisons and CosmicSky.

1.9kdownloads
Pocket Space Teleporter
1.21.1neoforge

Pocket Space Teleporter

This mod provides a teleporter to teleport players to a secure and private pocket space

1.9kdownloads
BetterE-Chest
1.12spigot

BetterE-Chest

A plugin that doubles your enderchest storage space with customizable rows!

1.9kdownloads