Sci Fi Action

Space Pirate sci-fi.

Ethan Walker, an overworked office drone, thought his worst problem was a bad convenience store meal. But after collapsing on the subway, he wakes up in the cockpit of a starship in the middle of a vast galactic empire. Now, stranded in a sci-fi universe filled with autocratic empires, space pirates, alien races, and interstellar wars, Ethan must adapt fast or be left for dead. Armed with his wits and an unpredictable star ship, he embarks on a journey to survive and thrive as the galaxy’s newest mercenary. From office worker to space legend, his adventure across the stars begins!

After dying as a soldier for his alien overlords, Elias Varis is reincarnated decades into the past with a System, before humanity’s enslavement. The Prometheus System, a powerful interface that grants him a photographic memory and unlimited untapped knowledge, decades ahead of his time. Armed with cutting, edge military strategies, futuristic technology, and a mind that processes information like a supercomputer, Elias knows that Earth is doomed unless he changes its fate. To unite humanity and prepare for the inevitable invasion, he joins the Western Military Academy, hiding his abilities while secretly shaping the foundations of war. With time running out, Elias must outthink, outbuild, and outfight an empire that hasn’t even arrived yet.  Warning: Reincarnation, military sci-fi, and a broken OP system ahead! Oh, and just so you know, all chapters on Webnovel are free! 

****** Zazm Mystic a young and energetic highschooler, who has developed a great interest in the laws of universe. His love for maths and his curiosity for universe always kept him occupied in books. His childhood friend Jahanox Nova, who is in the same grade as him is the top student of the class. One day Zazm suddenly finds a letter in his back, he initially thought it was a love letter but when he opened it the content of letter was "Once you fall into slumber tonight, your world shall change." He felt confused as to what that letter meant. Until he woke up the next day to realize what it was. (A/N: This will a Sci-fi novel and will be mainly based of adventure and stuff. There won't be any romance in particular. No BL, No GL and No Harem)

IMPORTANT DISCLAIMER: Everything in this story has a purpose, and every detail has an explanation, i.e. nothing is explained with 'it works cause it works'. The more questions you ask when reading this story, the more you will understand later on. If you just turn off your brain to read you won't know why things are happening the way they are. Also, nothing is random. If something feels 'forced' it's meant to be, ask why and I guarantee you will enjoy the novel more. Synopsis: This is the story of a young man who was reincarnated as a dragon with a near-insatiable curiosity. Initially sparked by questioning his own reincarnation, he quickly gets lost in the endless world of magic, using his deep understanding of advanced sciences to learn the laws and properties of a new type of energy known as mana. However, soon enough, the table would flip, and he would begin using that very same energy to expand his knowledge of science, to the point that he would begin questioning his own understanding of the world. Although not his original intention, with the combination of his intelligence, expanding curiosity, and the 'miracles' that occurred to allow for his existence, he quickly found himself climbing the mountain of strength as if it were a small hill before eventually climbing to a point where it seemed as if he himself was the peak itself. Even if.. that was never the case... - There is mild gore, and profanity is 'censored' toward the beginning, but not later in the story. - Tags: Action, Discovery, Adventure, Fantasy, Sci-fi Sub Tags: Reincarnation, Magic, Non-Human Lead, (Extremely) OP Protagonist, Mystery - New Chapter twice a week, on Monday and Wednesday at 1:30 PM EST! (Unless Stated Otherwise, join the Discord for updates) - Uploads not on Webnovel, Royal Road, Wattpad, or Scribblehub are ILLEGAL - Community Discord Server: https://discord.gg/Dv7G5bQD4v Account must be at least 3 days old. Note: This novel takes place in the same universe as my other novel, TSH (The System's Harvester) on RR and SH

Lucas—a sharp-tongued, fourth-wall-breaking pilot, and in his own opinion, the best pilot in the far future. In a universe where humanity has conquered galaxies, star systems, and built wormholes as intergalactic highways, his journey is anything but ordinary. This is a story about who Lucas was, and what he is destined to become. Along the way, there will be friendship, love, and deep sci-fi elements—all set against the backdrop of political battles between warring empires.

"How far will you go to save the only home you've ever known?" Tyson never wanted to be a hero! But on his 20th birthday, everything changed. A Meta-bot chose him—fusing with his body, wrapping him in powerful armor, and throwing him into a war far beyond his control. "You are now a Ranger. Fight, survive, or let Earth die." Edward said, "And remember, you don’t choose Meta-bot. It chooses you. And when it does… your life is no longer your own, Tyson" The rules are straightforward. Every few years, the intergalactic tournament commences. Earth gains additional time by successfully navigating the stages. Billions of lives hang in the balance while the battles are broadcast live—nothing more than a twisted form of entertainment for some godlike beings. "You’re not ready for this, Tyson. You’ll get yourself killed." As if fighting for survival wasn’t enough, Tyson must prove himself worthy of the Roger family name, fix his fractured bond with his adopted brother, and navigate his growing feelings for a girl he never expected to fall for—the daughter of a fallen General. But time is running out. "You think this war cares about what you want?" "No, it never has. It never will," a voice whispered. "It’s on you, kid. If you want to survive, then fight for it." ------ This novel blends sci-fi and fantasy, featuring a 'weak to strong' progression. My focus is heavily on character development, so if you're looking for a regular story, then this novel might not be for you! Tags: Action, Adventure, War & Politics, Tournament, Fantasy, Romance, Gore, Death, Brotherhood, Alliances, Dungeons & Maps, Weak to Strong, Sci-Fi x Fantasy, Character Growth, Power Progression, Mecha Battles, Revenge & Redemption, High-Stakes Survival, Emotional Depth, Betrayal. [ I recommend you to give it a read to 30+ chapters before you decide to drop the novel ] [Pease comment if you want to ask questions] [ I updated 1 chapter per day, 7 a week. 50 Power Stones = 1 Extra Chapters 100 power stones = 2 Extra Chapters ] [Your Support will be a massive help to me!]

"I've finally gotten my revenge and eliminated all the aliens. Now what? I thought it was over, but no, it was only the beginning. One day, a mysterious object appeared out of nowhere and began conquering the entire universe. Gates, monsters, and other mysterious primordial beings, far stronger than I could have ever imagined, began to emerge..." What to expect: Fantasy World and Adventure start later in the story. Writing style: 1st person writing will eventually switch to 3rd person writing later in the story as more characters are introduced. Other tags: Fantasy, Isekai, Evolution, Dungeon or Gates, Revenge, Summoning, Sci-fi, a little Romance, Necromancer. Keep reading to find out more. Discord: https://discord.gg/NNeHNANtrd

A week before Earth’s destruction, Xiao Wu merged his soul with a spaceship equipped with an integrated computer and managed to escape the planet just in time. After integrating with the computer, Xiao Wu not only gained immense computational power but also retained human creativity and curiosity. As a result, the initially simple spaceship continuously evolved: its chemical engine was upgraded to a nuclear engine and later developed into an antimatter engine. Its size and mass also expanded over time. As technology advanced, Xiao Wu began experimenting with the construction of a super fleet, integrating various functions such as offense, defense, exploration, landing, and resource collection, ushering in a new era of cosmic conquest.

In any place, planets in any universe and other worlds, if a threat comes from the outside, everyone will definitely unite to defend their land. And a planet called Earth, it's not exempted. Either luck or fate, human beings was able to discover something strange,,, an alien. The visit was secretive and unfriendly for the two parties to fight for their own believes. Fortunately, the human side was able to kill the lone intruder but loss many lives. With this encounter, the human race took it as a heads-up and made a lot of worldwide preparations; focusing in military and directly eliminate many civil matters. At that time, the main character was about to settle down, have a family on his own and enjoy the rest of his life but didn't expect for such a big thing to happen. Lucky he was, had an adventure for him to have the ability to protect his beloved and all the people around him. But one man can't cover the whole planet for many people to die and two-thirds of the land to be occupied by beasts sent by the invading enemy. Although humans had lost in the first war, they learn a lot of things for the rapid growth and develoment in different areas, especially in the field of Science and Technology. When the right time comes, it will be humans who will be on the offensive. For sure there's still a big gap to win against an enemy who got the lead, but human beings is a race that will never give up; will never let anyone get what theirs. But at the end, things sometimes won't go as planned to lose something,,, someone...

Isekai, self-insert MC, overpowered, science fiction, strategy and spaceship battles. Chat-GPT for chapter 1-8. Starting from chapter 9, I will properly write. This is for anyone who see all of that and are still interested: I want to make a novel with as realistic physics as possible. I will, almost definitely, create a bunch of magical sci-fi stuff, especially later on, but I will try to stick to established rules as much as possible. Much of the orbital mechanics and warfare is learnt from the game Children of a dead Earth and Kerbal Space Program. This is my very first book, so expect no planning and shitty execution, even with GPT.

Step into a world where science meets the unknown, where mechas clash in brutal duels, and where every Biocore holds a mystery waiting to be unraveled. Follow Nioh, a genius weapons designer, as he uncovers lost technology, battles biomechanical titans, and pushes the limits of power, in an intergalactic thrilling adventure ------ The genre is Sci-fi. A mix of science and some myths. In a futuristic/interstellar world. The hero is fun, scheming and smart. The science and the weapon building is central to the story and well thought.

Destiny ties with two people, whenever they are and who they come to be as long as they are destined with each other, the red string can only twist, take many turns or tangle but will never break. On the day of their birth, they are already tied by the Supreme Reader and will leave their story to these individuals as they please. Conflict may arise between them but at the end of the day, such people will pass through with their every encounter holding a meaning. ----------------- Cover is edited and drawn by me First book of the Hana Series DISCLAIMER: Any names. objects, ideas, and characterization written/mentioned in the story are PURELY by fantasy, of the human mind, and does not to harm anyone or anything in the realm of reality. [Includes side stories and other love tropes] [Slightly gore and twisted] [Humor included] [Author updates 5-7 days] [Action and Adventure]

In the grim future, genetically enhanced humans have evolved into a powerful new species—the Eldkin. Divided into several subspecies, the Eldkin are governed by a council of primarchs—each representing a distinct kintype—who maintain order within the Eldkin Cooperative, and defend it against alien threats. Wars are waged with devastating technology and the supernatural force of myst, a volatile energy fuelling powerful abilities. Meanwhile, ancient marvels known as Astralgates link every inhabited world together, alien or otherwise, for better or worse. In this chaotic universe, Damian Moroi, a Bloodkin and heir to a powerful Eldkin family, is as talented as he is ruthless—manipulative, ambitious, and all too aware of his own charm. But on his eighteenth birthday, revelations about his 'birth' and the genetic origins of Eldkin as a species shatter the life he thought he knew, forcing him to adapt to an uncertain new reality. Damian is forced to retreat for a while, but his ambition burns as brightly as ever. And he intends to satisfy it… on this planet and beyond. -------- This novel has none of the bad things, and all of the good things. Probably. There's no NTR or Yuri, and I've created a fantasy/sci-fi type story with new iterations of the classics. Come check it out.

The Host – A Sci-Fi Thriller When brilliant physicist Dr. Elias Vander pushes the boundaries of human understanding, he unknowingly shatters the fragile balance between dimensions. His latest invention—meant to revolutionize physics—rips open a gateway to the realm of the jinn, allowing dark energy to flood into Coast City. People begin to change, gaining terrifying abilities, and among them is Nate—a young man whose connection to the jinn is unlike anything seen before. As chaos spreads, Nate grapples with the strange entity inside him, an ancient force that speaks to him from the shadows. Is he a hero, a monster, or something far worse? Meanwhile, trapped in the jinn’s realm, Elias fights to uncover the truth behind his disastrous experiment and find a way home. But as the rift between worlds widens, powerful forces rise, each with their own agenda. With humanity’s fate hanging in the balance, Nate must embrace his destiny before the darkness consumes everything. In a world where science and the supernatural collide, The Host is a gripping tale of power, identity, and the price of tampering with the unknown.

Fragments of the Infinite Nova Quinn was born into nothing—just another street orphan in a city that devours the weak. Surviving by wit and theft, he never questioned the past. Until the past came for him. A dangerous heist gone wrong leads him to an impossible truth: his parents' deaths were no accident. Their fate is tangled in forces beyond understanding—a mystery that defies time, science, and reality itself. Hunted by a ruthless gang leader and watched by a shadowy organization, Nova’s only allies are a reckless childhood friend with secrets of his own and a drunken traveler who knows too much. As he uncovers clues buried in forgotten myths and advanced technology, the lines between past, present, and future begin to blur. Because in a world where the rules of reality can be rewritten... who controls the truth? Genres: Sci-Fi | Fantasy | Action | Mystery | Adventure If you love: Time-travel twists, betrayals, deep lore, and a slow-burn mystery, this is for you. Start reading now. The Infinite awaits. ---

In a world ravaged by destruction, Dr. Adrian Voss awakens to find himself reborn—no longer fully human. With cybernetic enhancements and a fragmented past, he must navigate the ruins of civilization, uncover the secrets of the Genesis Core, and survive against mutated horrors and warring factions. As he pieces together his lost memories, Adrian discovers that his transformation was no accident. The fate of humanity now rests on his ability to harness the power within him. But at what cost? In this gripping sci-fi saga, evolution is the only path to survival.

a guy, a famous actor, gets isekaied as a frog into a fantasy sci-fi world and uh becomes the protector of magical beings, the hero of the forest, the villain to the humans, humanitys hero's worst enemy

{WSA ENTRY} Planet X was built to be humanity’s next utopia—a thriving city far from Earth. But for five kids, something feels off. Every morning, everything resets. At first, they think it’s just déjà vu, but the cracks in reality grow impossible to ignore. Time loops. Objects move before they touch them. People repeat the same words, the same actions—except for them. As they search for answers, they realize they’re not just trapped in a cycle—someone, or something, is keeping them here. The deeper they dig, the more disturbing the truth becomes. The city’s origins, the failed experiments, the shadow that watches them from outside the loop—it all points to a terrifying reality. The loop isn’t just a glitch And they’re not the only ones inside. With time running out, they must make a choice: escape and risk everything—or stay and lose themselves forever. But some doors were never meant to be opened. And now the final reset begins NO YURI!, NO NTR!, NO ECCHI!, NO SMUT SCENES I THINK?not sure hehe. MOSTLY SCI-FI. Support me with daily power stones. DISCORD LINK: https://discord.gg/HxwKtaMt

Rebirth Protocol In a world long abandoned by civilization, Dr. Zephyr Cain, a visionary CEO and cybernetics genius, awakens from cryosleep to find everything he built reduced to ruins. His corporation, NovaCorp, once at the forefront of human advancement, is now a distant memory, and the world above has become a war zone where rogue AI, mutated horrors, and fractured human enclaves fight for dominance. Guided by his AI companion, NOVA, Zephyr soon discovers that he is not the only one who survived. Other powerful figures from his era—rival CEOs, warlords, and visionaries—have also awakened, each with their own vision for the future. Some want to rebuild, others seek to conquer, and some have already begun their rise to power. With his cybernetic enhancements and technological prowess, Zephyr embarks on a treacherous journey to activate Project Rebirth, a last-ditch initiative designed to reclaim humanity’s lost legacy. But as he gathers resources, allies, and lost NovaCorp technology, a sinister force lurks in the shadows—one that remembers his past sins and is determined to stop him. Betrayals, power struggles, and remnants of a forgotten war threaten to consume him. Is Zephyr here to restore the world… or will he become its greatest tyrant? In this action-packed sci-fi epic, where the line between man and machine blurs, the future is no longer written—it is fought for.

[SPIRITY WSA ENTRY - VILLAIN] When I was in middle school, my favorite genres were always Sci-fi and Reincarnation. So, when I heard that I was going to be reborn into a world of advanced AI and high tech, my excitement went through the roof, knowing that I would be reborn into my dream world. But that's not the only reason why I'm excited, because I knew to myself that in this life I would finally have a chance to find my cute heroine!! that's right... My ideal heroine... However, Little did I know that my heroines were all originally villainous villains?!!, whose fates are to destroy the world?! "Ahh shit...." ======== [Benefits of adding this to your collection] -Characters and worldview Illustrations for y'll! [Exclusive illustrations] -2.2k words per chapter for the first 10 chapters of the story. -Consistent weekly updates for you all! -It's free and accessible to read. -Writing development. -Update every 6:55 P.M / 18:55 (UTC+08) ======= Discord: https://discord.com/invite/pZHbXYjz

Part of the Heavy Weapons sci-fi universe. Arc 1 & 2 - A small Nomad colony reports that thousands of people missing and no one dares to look into it, Diego Harley decides to investigate and becomes the fascination of dark, dangerous creatures that begin to obsess over him, putting everyone around him in danger as they try to claim him for their own perverted, reckless desires... Arc 3 - As the dust settles from the clash in arc 2, the corruption spreads and catches the attention of larger players within the universe, but as the crew some come to find, someone doesn't need to be corrupted- to be thoroughly corrupt. Might meets desire as the Rewritten expand their operations and show the universe that they are here to stay whilst Diego tries to find a way out of his new situation. 18+ only - This is a very adult story from the very beginning with strong focus on futanari on male action, it does have good story elements however (so i've been told) - if that doesn't put you off, please continue. Features anthropomorphic characters, violence, corruption, aliens and an awful lot of goo. Level 1 (GREEN) - Vanilla sex scenes, likely to be male on female Level 2 (AMBER) - More diverse and "saucier" sex featuring the corrupted cast and futa biology Level 3 (RED) - Scenes involving more alien biology, more fetish based work, potential soft non-con Level 4 (BLACK) - Unusual fetishes and potentially offensive scenes with hard non-con being a possibility

Samuel is simply an ordinary guy. He likes to read books, mainly sci-fi theme blended with a little bit of fantasy. He was... immersed, to say the least in his own little world, which gave him leverage in the reality of the world. He barely managed to enter the State University of what he wants. It was even the first time he took an effort to something. But in the midst of his daily routine. He found himself within the ship, barely gasping any air. Yes, he was abducted.

Umbrellas is a sci-fi fantasy novel set in a futuristic floating city in space, where an elite organization—also called Umbrellas—defends the universe from nightmarish alien creatures known as Annihiliths. Clark Smith, an ordinary man from Earth, suddenly finds himself in the body of Donovan Volgard, a reserved and mysterious Mage-type Visitor—one of Umbrellas’ elite operatives. With no idea how or why he ended up here, Donovan must think fast to avoid suspicion. He soon realizes that while he has access to the original Donovan’s memories, his personality remains his own. Forced to play along in this unfamiliar world, he takes his first steps into a life filled with magic, mystery, and interstellar danger—while secretly searching for a way back home.

one night Dan Smith was found dead, police said it was a suicide but his friends didn't think so. Adi, Anne, and Peter had started to find some clues that Dan left for them before committing suicide. What happened to Dan? Was it a suicide or murder? cover design by Mashy Yom

In the year of 2042, the hometown of Atlise becomes incapable of holding living creatures. Human beings find it difficult to live, facing serious problems like struggles in breathing, good food, pure water and other essentials for survival. Later, with the help of the O'Brien's Company, people migrate to Artificial Island(ARI), created by them with advanced technology. People enjoy a cozy and comfortable life at ARI, overpowered by bots and advanced environments. Only after moving to the island, youngsters get conscious of how vast and supernatural their lands was, being one among the powerful Octa countries. They extend to set bond with the people of octa countries, exclusive of the werewolf kingdom, who were considered the most coldblooded and merciless after transformation. In spite of moving to a safe place, problems arise once again by a mysterious evil intruder. Jason Maddox, who was born years later had to accidently fall as a bait to the mysterious eviler, who gives him a mysterious defect that lets him enter a abnormal life full of Chaos and breathtaking days. Things get tangled up, once they start to solve the quest of the problem, leading them into terrifying nightmares full of dark traits and thirst for revenge, which leads to breakage of relationships and trust between themselves. Will Jason be able to save himself and his people from the hands of evil? Let's get inside the adventure of Jason's life and see how he lives his life from normal to abnormal. _____ P.S (Tag: Sci-Fi, Fantasy, Werewolf, adventure, Supernatural) Hello guys, this is the Author! If you are here to take a sip of werewolf story with a familiar plot, then this isn't a perfect place for you. NAI isn't like the ordinary Sci-Fi werewolf novel, you used to read often. Its completely different from the novels in WN, where lot of events occur in several places with interesting sequels. You could strongly feel the transformation of the MC, how he controls his self and his bonding, both with his family and friends. The antagonist would absolutely make you crazy, making confused by the acts of sacrimony. Once you start reading, you would completely get hooked up with the world design, since I didn't give much info about it here. Hope you fall in love with the Artificial Island and show your support till the end. Enjoy!!!

Chaotic Existence In a high modern sci-fi fantasy world teetering on the edge of collapse, Lucian, an aloof anti-hero, carries the soul of Tiamat—the ancient Primordial Dragon Queen—sealed within him. Hunted by gods, empires, and phantasms, Lucian fights to reclaim fragments of Tiamat’s shattered body and the truth of his existence. Torn between destiny and defiance, he rejects the control of those who see him as a weapon or savior, instead forging his path in a reality rife with corruption, exploitation, and cosmic conflict. Blending myth, quantum science, and raw emotion, the story delves into themes of identity, rebellion, and the chaotic struggle for freedom. With allies forged in the fires of their own struggles—a psychic prodigy, a jaguar beast-man, and a hot-tempered blacksmith among them—Lucian faces a vast universe of gods, monsters, and creators determined to bend him to their will. But in a world of chaos, only one truth matters: his. https://www.royalroad.com/profile/597441

In the dystopic world of 2072 ravaged by a ruthless war, Mike is a cyberknight fighting for a regime which promises justice and reforms to a broken world. However, virtue is a fragile concept, especially for an empire built on lies. Eventually, corrupt minds filled with delusion and madness will reveal themselves. When the masks drop, will there still be peace or a future? Blessed are those who can dream, condemned are those who remain in reality. In the dark, resolve is the only path forward. This novel combines fantasy and sci-fi into a story you have never seen before. Give it a try and you will stay for the plot and the high-intensity actions.

Chronicles of the Forsaken follows Seraphina Valemont, a feared villainess born into a corrupt royal family. Once an ordinary woman obsessed with sci-fi novels, her life takes a dark turn when a car crash sends her into the very world she once read about—trapped in the body of its most despised character. Marked by a bloodline curse, Seraphina must navigate deadly court politics, uncover buried family secrets, and survive a kingdom on the brink of war. As rebellion brews and betrayal lurks in every shadow, she forms a fragile bond with a mysterious figure—her enemy, her fate, and perhaps her only salvation. With love, power, and destiny at war, Seraphina faces an impossible choice: embrace the villainess she was meant to be or fight for a future beyond the chains of fate. But in a world where monsters wear crowns, is redemption even possible?

Luego de ser mortalmente herido en un ataque terrorista, nuestro protagonista despierta luego de un largo y oscuro sueño, en un mundo completamente diferente al que conocía. Para empeorar las cosas, gran parte de su memoria está borrosa y el "pilar" más importante de su vida, su hermana menor, posiblemente también fue arrastrado a este mundo. En un mundo de fantasía futurista donde está repleto de magia y espadas, nuestro protagonista hará lo que sea para encontrar a su único pariente, incluso si eso significa tener que poner medio mundo bajo su control. Por suerte, poco tiempo después de su llegada a este nuevo mundo, nuestro protagonista conoce a un fantasma llamado Gen que dice haber sido un héroe en su época de vida. Teniendo una gran variedad de conocimiento y dominio sobre la magia avanzada, este decide enseñarle todo lo que sabe al protagonista a cambio de una condición. A medida que más explora este mundo, más variedad de gente conocerá nuestro protagonista. Y entre esa gente, habrá muchos que mostrarán tener un gran poder y talento la cual el protagonista tratará de ponerlos bajo su control con fin de usarlos para completar su objetivo. ----- Tags: Action - Adventure - Comedy - Drama - Fantasy - Harem - Magic - Magical Realism - Magical Technology - Romance - Sci-fi - Slice of Life - Supernatural - Tragedy - Dark - Gore - Isekai - Mythology - Mythical Creatures - Character Growth - Male Protagonist - Cautious Protagonist - Clever Protagonist - Cunning Protagonist - Confident Protagonist - Charismatic Protagonist - Calm Protagonist - Determined Protagonist - Genius Protagonist - Hated Protagonist - Underestimated Protagonist - Unlucky Protagonist - Overpowered Protagonist - Overpowered allies - Overpowered enemies - Enemies Become Allies - Enemies Become Lovers - Mystery - Mysterious Past - Psychological - Artifacts - Brainwashing - Kuudere - Loli - Yandere - Maids - Servants - Psychopaths - Possessive Characters - Quirky Characters - Royalty - Multiple Reincarnated Individuals - Monster Girls - Obsessive Love - Overprotective Siblings - Brother Complex - Sister Complex - Past Trauma - Wars. ----- Importante: Esta novela es una obra original mía. La imagen de la portada no es mía.