Xenos - Cecilia Mae - Wattpad

Story cover for Xenos by CeciliaMae

Xenos

Reads 79
Votes 19
Parts 23
Time 2h 41m

Reads 79
Votes 19
Parts 23
Time 2h 41m

aliens freshreads horror leavethelightson lifeform notalone sciencefiction scifi scream spaceexploration suspense texttospeech thriller universe youngadult

Don't bring it inside...

When Cin and her research team discover an alien life form clinging to the side of the Ekhi, they think they've made a great discovery. A discovery that could change everything for them. 

They're right.

A science fiction horror story.

Content warnings: general sci-fi violence/death, blood.
Updated Mondays, Wednesdays, and Saturdays. 

Cover created in Canva. Chapter images from Unsplash.All Rights Reserved

aliens freshreads horror leavethelightson lifeform notalone sciencefiction scifi scream spaceexploration suspense texttospeech thriller universe youngadult

Table of contents

23 parts

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Supernal by MattMacBride

A discredited biologist joins the fight to keep Earth safe when aliens reveal the shocking origins of mankind ... and their evil intentions are uncovered. Dr Toby Jardine's much-derided theory of 'Intelligent Design' is proven correct when he takes part in a clandestine meeting with extra-terrestrials. The encounter aboard the USA's Orbital Construction Facility results in a sensational disclosure; an ancient race of highly intelligent super-rodents played God to create and exploit life on Earth as a food source. With Darwinism debunked and the world's religions undermined, the danger of worldwide upheaval is extreme. A worried US President decides the revelations, and the very existence of the aliens must be kept secret at all costs. But when Toby discovers the seemingly benign visitors have an evil ulterior motive for their visit, he and his colleagues are forced to take drastic action. The unarmed team on the facility must find a way to eliminate the threat while maintaining complete secrecy ... or risk plunging the population of Earth into chaos.

Kennedy & the Yautja by SkadiGemini

Kennedy struggles to survive in a post-zombie apocalypse world. A chance encounter with an alien changes the course of her life...but is it for the better? Vah'keil is a cocky Yautja who has to complete a hunt on the planet Earth. He's frustrated that he can't return home and claim the title 'Elite' until he's finished. There's some kind of lesson he needs to learn...but what is it? When he meets a human female, his life will never be the same. ** A variety of Zombie movies like World War Z crossed with the Predator universe fanfic. **

Leila of the Concrete Jungle [Book Three] by jplupine

[18+; Use an age indicator in YOUR BIO to confirm you're 18+ if you want to follow/comment or you'll be blocked for safety purposes] Leila is a detective in a harsh city and is good at what she does. However, a new case she's assigned to has many weird things about it that she just might be more familiar with than she lets on. With gangs trying to move in, it's hard to get work done, and this new killer not affiliated with any of the gangs isn't making her job any less difficult. Date Published: Feb 10, 2019 ✨~Ranks~✨ #9 Exophilia- 5/11/2023 #12 Predator- 4/10/2023 #36 OCxOC- 4/9/2023 #57 Yautja- 11/21/2021 #93 Alien- 11/22/2021

Prey by SkadiGemini

Leoni, who's been used as a science experiment for Weyland-Yutani Industries, escapes the facility she's being held at when an extraterrestrial attacks. The Yautja warrior, Drogaxe, has been sent to exterminate her and the human-Yautja hybrids created by the evil corporation. A deadly game of cat and mouse ensues between Leoni and Drogaxe until only one will be left standing. One prey. One predator. The hunt begins. #fanfiction #predator #yautja #interspecies #romance #action #slowburn #love #thriller ** I DO NOT OWN THE COPYRIGHT TO THE PREDATOR UNIVERSE NOR THE ALIEN ONE. MY CHARACTERS ARE PURELY MY CREATION AND BASED ON AND AROUND VARIOUS LORE AVAILABLE. ** Dark and adult themes within. Viewer Discretion Advised. • Mature Language • Blood/Gore • Violence • Horror Themes • Sex Scenes ~ Best Ranks ~ #1 Predator: 11/19/21, 12/6/21, 12/30/21 #1 Yautja: 11/29/21, 12/4/21 #1 DifferentSpecies: 11/24/21 #2 Predator: 12/8/21 #2 Hunted: 10/26/21-11/19/21 #2 Strangelove: 1/21/22 #3 Interspecies: 1/21/22 #4 Alien: 11/28/21 #5 Ontherun: 11/19/21

"Alien: Apollo 23: Dark Side of the Moon" A Alien Universe Fan Story by Chris9417

Decades before Ellen Ripley and the crew of the Nostromo stumbled upon the derelict spacecraft, a top-secret NASA mission dared to explore the Moon's hidden far side. Apollo 23 was meant to be routine-a scientific survey of lunar anomalies. But what the astronauts discovered was far from ordinary. Trapped hundreds of miles from Earth, the crew must confront a perfect predator: a Xenomorph, intelligent, adaptive, and lethal. As survival becomes a desperate gamble against time, isolation, and fear itself, humanity's first encounter with the ultimate nightmare begins. In the void of space, there is no rescue, and in the shadows of the Moon, terror waits. Content Warning: This story contains intense horror, graphic violence, and gore, including scenes of bodily trauma and alien attacks. There are depictions of extreme psychological tension, fear, and suspense. The narrative explores human survival under life-threatening conditions and includes mature themes of death, isolation, and terror. Reader discretion is strongly advised.

Alien: Genesis - The David Protocol AU Crossover by Chris9417

In an alternate timeline of the Alien universe, the USCSS Nostromo diverts from its original path to Planet 4-the eerie world explored in Alien: Covenant. There, the crew discovers the remnants of a dead alien civilization and encounters the enigmatic David 8, the synthetic architect behind a new horror: the deadly Protomorphs. As the creatures' intelligence grows and David manipulates both ship and crew, Ripley, Kane, and Lambert must use every ounce of cunning and courage to survive. From the terrifying corridors of the Nostromo to the ruins of an alien world, they face the ultimate confrontation with David and his nightmarish creations. In a battle of wits, survival, and sheer determination, the crew must confront the architect of evolution itself-and escape before Planet 4 claims them forever. Will they survive? Or will David's experiment continue... beyond the reaches of space? Content Warning: • Graphic violence and gore • Intense suspense and horror • Alien body horror and creature attacks • Psychological tension and manipulation • Strong language • Scary and high-stakes situations

Celestial Dawn by Robert_Bennet

Miorpeans are an ancient race that use starlight as a source of nourishment and energy. For eons they traveled the cosmos in search of sentient life that existed harmoniously within the limits of a planets balanced bio-network. They found the inhabitants of Earth to be in violation of this, the most imperative and fundamental of their natural laws. The planet was withered, desolate, and dying. Its environment was collapsing and Humans were deemed responsible for the planets deplorable condition, and eradicated. Now, after centuries of terraforming, a rejuvenated Earth was ready for habitation. A team of Miorpean researchers were tasked with testing the environment of this newly reclaimed world. One member of the team, Mira, made a stunning discovery. Somehow, humans had survived and were thriving in large communal settlements. Mira would come to believe that humans respected the planet and vowed to protect them from the fate the befell their ancestors. A stunning revelation about the origins of these humans would bring her into an intense conflict with a code of ethics and beliefs that has guided the course of her ancestral people since the beginning of time. Cover Art by Liviu Mihai A Special Thank you to TonyHarmsworth and kemorgan65 and JorKam for editing guidance.

The Invasion by kimberlyyt

They've arrived and have come to slaughter mankind from Earth looking for something they desire desperately. Who are they? They are the people from a planet called Planet X or Nibiru, the planet that was invisible from our telescopes. We rejected the thought of Planet X and that it was simply a hoax. But, it's not what we thought and they are here to destroy until they get what they want. It's been six days since the invasion and Sapphire is clinging to life with her best friend Finn. Within their own eyes they witness the unspeakable and unimaginable as they struggle to survive. A war is awakening and love, betrayal, secrets, and pain is spoken throughout of the invasion. The planet Earth has gone into chaos but the people from Planet Nibiru won't stop until they get what they want. For every kill to them is a step closer. Copyright © 2016 by Kimberly Turner.

Exploria; The Unknown by xXExploriaXx

This planet, will now be my new home, has I will protect it with the best of my ability, has they welcomed me... Until, the secret of this life, this home, reveal its self to me... I am Starslay, last survivor of my planet Quanta-4 The end is never present, never known by us, so why dont you, reader, join an adventure of the unknown. We are here to tell a story, and that is what we are doing. Why are they here? What is there to unravel? Why did they come to Earth? [Completed and published the 1 December 2020] Titles earned; #775 in longstory #496 in spacetravel #773 in friendsforever #703 in exploration

The Void by CLWhispen

Stella Jones journeys throughout the vast emptiness of the Void with a crew, hoping to find a way out. Until something new appears. Will it aid in their search for hope or will they remain in a world of nothing. Note from author: Brand new story! Yay! Got really into watching Alien and watched all the movies. So I decided to write an alien type story but with some twists and turns. Hope you all enjoy. Please like and comment. I'd love to hear everyone's feedback on it. Thank you! Copyright © 2025 by C. L. Whispen All rights reserved. For permission request to the author First Edition All characters are original and owned by the author

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Slide 1 of 10

Kennedy & the Yautja cover

Leila of the Concrete Jungle [Book Three] cover

"Alien: Apollo 23: Dark Side of the Moon" A Alien Universe Fan Story cover

Alien: Genesis - The David Protocol AU Crossover cover

Celestial Dawn cover

The Invasion cover

Exploria; The Unknown cover

Supernal

A discredited biologist joins the fight to keep Earth safe when aliens reveal the shocking origins of mankind ... and their evil intentions are uncovered. Dr Toby Jardine's much-derided theory of 'Intelligent Design' is proven correct when he takes part in a clandestine meeting with extra-terrestrials. The encounter aboard the USA's Orbital Construction Facility results in a sensational disclosure; an ancient race of highly intelligent super-rodents played God to create and exploit life on Earth as a food source. With Darwinism debunked and the world's religions undermined, the danger of worldwide upheaval is extreme. A worried US President decides the revelations, and the very existence of the aliens must be kept secret at all costs. But when Toby discovers the seemingly benign visitors have an evil ulterior motive for their visit, he and his colleagues are forced to take drastic action. The unarmed team on the facility must find a way to eliminate the threat while maintaining complete secrecy ... or risk plunging the population of Earth into chaos.