Best Sci-Fi Novels

A mother's worst nightmare unfolds aboard a private skycraft. Held at the mercy of Theros, she is forced into a devastating corner: confess to a crime she is accused of, or watch her weak pup, Althea, perish. With Althea's vital moonstone respirator cruelly snatched away, the young pup struggles to breathe, her lips turning blue in the howling night wind. Faced with Theros's ruthless ultimatum, the desperate mother must make a heartbreaking choice before her daughter's oxygen runs out completely.

In Metro City, corporate giants and flashy heroes dominate the skyline. Average citizen Scott McQueen dreams of becoming a shadowy antihero, a fantasy that becomes reality when he obtains the mysterious Harem Streamer System. By live-streaming his vigilante acts, Scott earns credits, unlocks powerful gear, and builds a massive global audience. But the system has a unique side effect: viral views make elite superheroines fall desperately in love with him. Now, he must survive corporate enemies and obsessed heroines alike.

Eleanor’s time as Julian’s paid companion ends when his true love returns. Expecting a scene, Julian offers five million dollars for her silence. Instead, she signs the NDA and leaves, hiding her identity as Cara Love, a disgraced heiress seeking revenge. Using her earnings to track her father’s killers and hide her self-healing blood from a syndicate, her cover is blown. With a tech mogul knowing her secret and enemies closing in, the hunt begins.

At the high-security Tartarus Blacksite, data-driven Dr. Aris Mercer is tasked with analyzing Subject Zero, an ancient Umbra Lord known as Ronan. While the lethal shadow-wielder awaits dissection by corrupt officials, a neural link reveals a shocking biological tether between the scientist and the specimen. Aris discovers their minds are in perfect harmony, forcing her to confront a choice: uphold her scientific principles or help the caged god of darkness unleash his true power.

After a warehouse fire claimed his first love, Celeste, Mafia heir Luca Romano spent years drowning in regret despite saving his wife first. When the sci-fi Chronos Project offers a chance to rewrite history, Luca risks his life to return to that night and save Celeste properly. Left behind to face the Romano family's bitter resentment, his wife decides she has had enough. She signs the waiver to follow him into the past, intending to finally let him go and ensure she is the one the fire takes instead.

Three years after being murdered in Salakole, the frozen remains of a once-promising scientist are finally discovered. Betrayed by her fiancé, Winston Patton, and his lover, Vivian Fowler, she was stripped of her supplies and cast off a ship while pregnant. To cover the crime, Winston erased her from the expedition records, branding her a thief and a coward. This sci-fi mystery follows the aftermath of her discovery as the lies that ruined her reputation begin to unravel.

After a decade of survival and a final betrayal, Hayley Reid is reborn two weeks before the world ends. In this LitRPG adventure, she abandons her toxic family to focus on the future. Using a powerful base system, Hayley constructs a high-tech fortress while others remain oblivious. As the apocalypse begins, she enjoys luxury and security while the world falls to zombies. Her base becomes a legendary steel stronghold, ensuring she never suffers again.

Betrayed by her fiancé, Leigh Simmons, she endured three years of horror in the Bleakridge mountains. As she lies dying during a painful labor, she discovers a shocking truth: her captivity was a cruel "survival game" Leigh funded to punish her for his sworn sister. But as her consciousness slips away, a mechanical system voice offers her an unexpected choice. With her suffering quota finally fulfilled, will she abandon the mission and leave this world behind forever?

To protect her fragile health and shield her from IVF struggles, Rocco Ferrari publicly claimed he was infertile. Touched by his devotion, she hid her true identity as a researcher from another era to secretly fund his ambitious projects. But the illusion of their perfect love is shattered when she overhears his colleagues teasing him. Rocco admits to enjoying unprotected intimacy with another woman named Avery, revealing his entire devoted persona was a lie built on betrayal.

On her seventh anniversary, Camille's life is upended by a shocking government record: she has been divorced for four years, and her billionaire husband, Luca Devereaux, remarried the very same day. After witnessing Luca celebrating with his new spouse, Camille is shattered. To escape the pain of his betrayal and the lie she lived, she decides to use a fresh identity to completely erase herself from his world. She has exactly eight days to vanish forever.

To fund her sister’s life-saving surgery, genius engineer Melissa enters a grueling three-year contract requiring her to marry Anthony, the Morgan Group’s arrogant CEO, and build humanoid robots for him. Anthony constantly belittles her and steals her work, certain she cannot escape. However, as their divorce countdown begins, Melissa’s old flame, Josh, returns to rescue her. Will she reclaim her life, or will Anthony regret his cruelty once the truth of her sister's accident surfaces?

Ten years of vows, and she still believes one flawless evening can salvage what they share. White linen, ivory candles, peonies, and the blue dress from their first date—everything set to reignite a fading flame. Yet when Eithan arrives, he doesn't offer love; he offers a drugged glass of wine. As darkness closes in, she discovers his chilling secret: a robotic mistress engineered to take her place. Now, trapped between betrayal and her unraveling mind, she must fight to expose the truth before she loses everything—including herself.

Betrayed and left to be eaten by zombies in her previous life, a pregnant woman was locked out of her own mansion by her husband, Jagger, who chose to save his beloved Emma instead. Now reborn before the apocalypse strikes, she refuses to be a victim again. Armed with her father’s factory, she begins hoarding supplies and constructing an impenetrable fortress. In this brutal new world, she will show no mercy to hypocrites or anyone else who threatens her survival.

When a scorching apocalypse fractures the very surface of the earth, humanity's darkest instincts emerge. Three months pregnant and utterly vulnerable, the protagonist faces the ultimate betrayal from those she trusted most. To conserve their dwindling food supplies, Eric Richard’s family ruthlessly drives her out of their home, abandoning her to face a slow, agonizing death from heatstroke in the blistering wasteland.

On her eighteenth birthday, Lena Carter dies—and wakes to the same day beginning again. Everyone forgets each reset except Noah Reed, who remembers every timeline. As Lena's forgotten memories bleed into the present, she learns she was never meant to remember: she wasn't chosen to save the world, but to become its anchor. Now the timelines are breaking, and every answer reveals a darker lie. Somewhere beyond the fractures of time, someone has been pulling the strings all along.

Rowan’s fated mate, Caspian Thorne, is a celebrated Alpha-to-be whose healing blood saves lives. But when his research partner, Jocelyn, tests a forbidden Soul-Eater agent on Rowan, her inner wolf begins to decay. Caspian defends Jocelyn and hastily prepares a gene serum, but rushes off to Jocelyn's side before adding the key stabilizer. Left with a lethal, incomplete cure, Rowan hears the Moon Goddess offer an escape: die by her mate's hands to break her shackles. She accepts her fate.

Following his engagement party, a man receives a chilling video call from his dying future self. The caller warns him that his fiancée, Chloe Lambert, is deceiving him: her pregnancy involves her male best friend, and the luxury flat they planned to buy is an overpriced trap to clear her friend's debts. To escape a future of betrayal and ruin, he must ignore the luxury home and purchase a rundown suburban unit at 28 Franklin Street, which is destined for a massive buyout.

For ten years, a factory worker has stayed home to provide full-time care for their bedridden mother, supported by a $3,000 monthly stipend from their brother, Lemuel, a university professor. Believing he is being exploited, Lemuel implements the government's new "Equal Responsibility Tracker" to monitor every cent. Armed with a printed agreement and a tracking implant, he seeks to end the "freebies." However, his smug attempt to enforce financial fairness is about to ruin him.

After fifteen years together, a wife uncovers a chilling betrayal: Oliver traded their entire relationship to Heartline, an AI romance platform. Their private world—tender nicknames, bitter quarrels, and one heartbreaking voice note—became mere training material for machines, her deepest feelings filed away as “female response data.” As reporter Theo Mercer offers cautious support, his genuine care forces her to confront what Oliver truly erased: not only their history, but her very right to define love on her own terms.

Waking in a harsh wasteland, a woman transmigrates into a weak rodent-variant body. Faced with a forced pairing auction, she avoids brutal mutants by choosing a sickly, dying man as her mate. Though the tribe mocks her for picking a poisoned invalid, she possesses advanced survival skills. Her new partner is secretly a powerful silver wolf warrior in disguise. Together, they ignore the jeers and use a stone hoe to transform their barren shelter into a fortress.

During Lorenzo Alvarez's mafia coronation, Isabella Valenti prepares to reveal her pregnancy, heartened by his public displays of devotion. However, the facade shatters when she discovers him with a dancer, dismissing their relationship as lacking passion. Devastated by his infidelity and casual deception, Isabella realizes her life is a lie. Instead of confronting him, she secretly accepts an invitation to a high-stakes confidential experiment, seeking an escape through science.

During a terrifying zombie apocalypse, mercenary leader Hans Luketon risks everyone's safety for his sweetheart's lost bag. To save the survivors, his wife knocks him out and steers the ship to safety. After being murdered by Hans in revenge following the birth of their child, she miraculously wakes up back at the start of the outbreak. Faced with his original fatal choice at the cockpit door, she decides to let him face the consequences of his own actions this time.

After dying of heat exhaustion during a brutal water shortage, I uncovered a sickening truth: my husband’s pregnant "niece" was actually his secret mistress. My in-laws had ruthlessly exploited me to care for her before forcing me out to my death. But when I open my eyes, I am back at the beginning of the extreme weather crisis. With the television forecasting record-breaking temperatures, I vow to survive in air-conditioned comfort while executing a cold, calculated revenge on my treacherous family.

As a record-breaking heatwave ravages Earth, Will sacrifices everything to construct a high-tech shelter. In his first life, he forcibly saved his fiancée Janine from the lethal sun, only to be betrayed. After Janine rose to power, she blamed Will for her secretary’s death and executed him in a fit of misplaced rage. Now, Will has regressed to the moment before the apocalypse began. Faced with Janine’s defiance once again, he chooses a different path for survival and revenge.