Minecraft Java 1.21 Mods
Browse 31 free mods for Minecraft Java 1.21 — popular picks include Loginar Storage, Alien Origins (Ben 10 omnitrix), Arachnids.
Updated daily
Loginar Storage
Storage and inventory improvements... and alien squid dudes
Alien Origins (Ben 10 omnitrix)
Adding origins to the game based of the Ben 10 aliens!
Arachnids
Arachnids is a mod based on the first Starship Troopers movie and 2005 game about an alien race of bugs.
Alien Cat
Trade Other-Wordly items with your new friend! the alien cat!
Gecko King's Aliens vs Predator Mod
This is a mod about the Aliens and Predator franchises; adding xenomorphs, anathema (pathogens), and yautjas to your worlds.
galactic create
A massive Create addon introducing oxygen mechanics, custom planets, inter-dimensional spacecraft, alien mobs, and procedural space structures.
AVP: Alien
A module for the AVP universe that adds alien content.
Creature From The Stars
Adds a deadly alien infection
Phenominae: Cryptid Creatures & Strange Encounters
Add cryptid creatures in your world like aliens, monolith and more!
mc extremo 3 mod
A mod that aims to faithfully recreate the Minecraft Extremo 3 experience from Eufonia and AuronPlay, including hardcore lives, danger levels, PvP, vengeance mechanics, custom HUD elements, and special events.
Cobblemon No Man's Craft Compatibility Patch
Fixes Cobblemon not spawning and asphyxiating on alien planets
Phineas and Ferb
Phineas and Ferb mod, will add characters from the animated series Phineas and Ferb to the game.In your world, there will be:Phineas, Ferb, Isabella, Baljit, Buford, Candace,Stacy,Vanessa,Norm,Dr. heinz doofenshmirtz. Of the functions, the mod will add aci
Aliens & UFOs
A mod that adds Aliens, their spaceships and much more!
The Dababy Modification 2
Explore an alien dream like world, encounter unique mobs, use new mechanics, and see Dababy's face on every texture
Aliens Vs Predator: Resurrection - Aliens
A continued project, cloned with permission, of the new alien vs predator mod.This module adds alien content.
Project Parasites
An alien parasite crash-lands via meteor, corrupting terrain across four escalating phases while adaptive swarm AI hunts you down — craft countermeasures, gear up in hazmat armor, and purify your world before it's consumed.
Aliens Vs Predator: Resurrection - Humans
A continued project, cloned with permission, of the new alien vs predator mod. This module is the human part of the AVP module Suite.

Little Visitor
A mod that adds little alien dudes to your Minecraft world
Aliens Vs Predator: Resurrection - Predators
A continued project, cloned with permission, of the new alien vs predator mod.
Dababy Mod 2
Explore an alien dream like world, encounter unique mobs, use new mechanics, and see Dababy's face on every texture
The Gifted
Unlock abilities by surviving danger, injecting powerful serums, or experimenting with alien tech and mutation.
Chaos Engine
Chaos Engine adds events to the server (UFO, meteorite, glitch events, and others), custom enchantments, and careers. The plugin also includes a weapon system, cases, a casino, and much more!
Dawn Of The Pyro Brothers
Fight the aliens forged of fire
Alienated
Adds a whole new planet to explore!
alienation craftation
someone asked me to add this to modrinth so heres the modrinth port/edition of my chaotic and very confusing aliens mod!
Better Ghast Remastered Resource Pack (1.21.1, 1.20.1) – Texture Pack
Better Ghast Remastered Resource Pack overhauls the Ghast mob, transforming it into a more imaginative version that resembles jellyfish or other sea creatures. The pack features eight unique micropack models, each offering a different take on the Ghast, with designs that evoke an alien or cosmic aesthetic. While retaining the classic Ghast face and tentacles, […]
Xenomorph Vanguard Mod (1.21.1) – Survive Lethal Alien Infestations
Xenomorph Vanguard Mod brings dangerous extraterrestrial creatures, intelligent hive colonies, and protective chitin gear to Minecraft. You face a complete alien lifecycle starting from hidden eggs and clinging parasites up to towering queens. The mod also lets you gather alien drops to build tough armor sets, harvest growth-changing jellies, and explore dark resin-covered territory. Features: […]
Prismatic Wormhole Voids Mod (1.21.1, 1.20.1) – Travel Through Wormholes
Prismatic Wormhole Voids Mod introduces the Ultra Space dimension into Minecraft alongside five alien biomes. You can travel across dimensions by walking through floating entity wormholes that appear naturally in your world. Each area features distinct landscapes and strange environmental traits using vanilla blocks. The mod runs on its own without needing extra creature mods […]
Subnautica Ember Mod (1.21.8) – Survive Giant Leviathans in the Deep Ocean
Subnautica Ember Mod brings the deep-sea survival of Subnautica into your game. It fills your oceans with new alien creatures, underwater biomes, and hidden dangers. You start in calm waters but must dive into dark caves and deep trenches to find new things. The mod also adds an infection sickness that makes survival harder as […]
Nexus Infection Mod (1.21.1, 1.20.1) – Survive a Spreading Plague That Mutates
Nexus Infection Mod unleashes a dangerous plague that slowly takes over your Minecraft world. When you place a bed, strange creatures start visiting you at night to spread the corruption. The infection turns the ground into dead blocks, mutates friendly animals into undead monsters, and grows alien trees. It also builds massive underground hives filled […]
Brainium Mod (1.21.1, 1.20.1) – Battle Parasitic Brain Bosses
Brainium Mod unleashes a parasitic alien infection upon your Minecraft world. It starts when a mysterious meteor crashes from the sky, bringing tiny brain creatures that look for hosts. These parasites drain energy from other mobs to grow into powerful bosses. You must fight back using new guns and special armor before the alien growth […]