Aliens & UFOs

Aliens & UFOs

A mod that adds Aliens, their spaceships and much more!

by
1.6K Downloads
fabricequipmentmobsworldgen
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Screenshots

Ray Gun
 Blaster
The UFO
The UFO
The Aliens
An Alien

About this Mod

Title of the mod, in a Minecraft update title style

The Aliens are here! 👽

And they came in peace.... unless you mess with them, of course.

This new species can be found in a new structure, their spaceship: The UFO. This structure spawns at the highest Y coordinates in your world! They also appear in certain End biomes (for now).

Features of the Mod

🛸 Structures:

The UFO

This otherworldly spaceship spawns between the Y coordinates of 200 and 250.


It's also only a little rarer than villages, so don't worry about missing out!
The UFO, seen floating in the sky.
The UFO, seen from afar.

👽 Mobs:

The Aliens

This new species of mobs is a lot smarter than you think! They are as cute as they look; however, you must not harm them, or you'll face the consequences.
The Aliens aboard the UFO.
The Aliens, ready to retaliate.
The Aliens, seen in The End. (Enderman variants not included)

🔫 Items:

Ray Gun

A gun that fires lasers, designed to neutralize threats quickly and made from alien technology.
Deals three hearts of damage and doesn't require any ammo.
Steve holding the Ray Gun.

Blaster

A powerful handcrafted weapon that fires blue lasers non-stop and deals the same damage as the Ray Gun.
Steve holding the Blaster.

Other Features:

  • A new painting.
  • 4 new blocks.
  • Compatible with worldgen and other structure mods!
🗺️Translations!
  • Portuguese (Brazil, Portugal)
  • Spanish (Mexico, Spain)
  • Russian
  • German

Upcoming features

  • 🔭 1.21.X ports.
  • 🦊 NeoForge port.
  • 🔫 New craftable gun item.
  • 🛸 New Villager profession: The "Ufolloger".
  • 🏛️ More structures.
  • 🗺️ More translations (Spanish and Russian).
  • 👽 Alien-themed End biome.
  • And much more!
🆕 Update Roadmap

1.0 - Aliens and UFOs

Initial Mod update, introducing its main elements.

1.1 - Otherworldly Weapons

Focused on adding the new weapon (and preparing space for others), but also on fixing bugs.

1.2 - Ufology

This update will add more to the mod's worldbuilding, centered mainly on the new villager profession and new structures.

1.3 - Homeworld

Certainly the most challenging update. It will feature major changes centered on The End, such as a new biome and larger structures. As well as an overhaul of already established concepts.

⚠️ Known Bugs
  • The painting can't be accessed by inventory
  • Firing with a gun triggers the default right-click animation

Stay tuned! And keep an eye on the sky, they are watching us. 👽

( Special thanks to Kaupenjoe for his wonderful tutorial series; without it, this mod wouldn't exist. )

( Feel free to use this mod in your modpack. )

Available Versions

Aliens and UFOs - 1.21.8 - 1.1 UPDATErelease
MC 1.21.8fabric
January 18, 2026
Aliens & UFOS - 1.21.7 - 1.1 UPDATErelease
MC 1.21.7fabric
January 18, 2026
Aliens & UFOs - 1.21.6 - 1.1 UPDATErelease
MC 1.21.6fabric
January 18, 2026
Aliens & UFOs - 1.21.5 - 1.1 UPDATErelease
MC 1.21.5fabric
December 8, 2025
Aliens & UFOs - 1.21.4 - 1.1 UPDATErelease
MC 1.21.4fabric
December 8, 2025

How to Install Aliens & UFOs on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.8).

3

Install Mod

Open the mod browser in the dashboard and search for "Aliens & UFOs". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.8, 1.21.7, 1.21.6 (+5 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Aliens & UFOs server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.8). You can switch loaders with one click in the panel.

Is Aliens & UFOs compatible with fabric?

Aliens & UFOs officially supports fabric for Minecraft 1.21.8, 1.21.7, 1.21.6. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Aliens & UFOs – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Aliens & UFOs consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Aliens & UFOs with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
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NVMe SSD Storage
DDoS Protection included

Details

License
MIT License
Server-side
Required

Supported Versions

1.21.81.21.71.21.61.21.51.21.41.21.31.21.21.21.1