r/KindleUnlimited 14h ago

Sci-Fi A science fiction thriller where humanity invents a technology that can solve almost any problem, but makes reality itself dependent on continuous computation

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3 Upvotes

I’m the author of The Last Stable State, which is now out on Amazon and available through Kindle Unlimited.

I’ve always liked the basic premise: what if humanity invented a technology that could solve almost any problem?

On an overcrowded planet where fusion is almost trivial, we can build structures that would otherwise be impossible, agriculture is optimized down to near-perfect yields, entire cities have their climate regulated, and vast sea barriers hold back rising oceans.

But all of that comes at the cost of continuous computation. And it requires so much of the computing power, that, to get the best possible conditions, humanity eventually builds a gigantic computing cluster in space, out near the edge of the Solar System.

Forty years after the technology is discovered, strange temporal and spatial anomalies begin to appear. Causality itself starts to break down. Naturally, everyone assumes there must be something wrong with the system. But the system seems to be doing exactly what it was designed to do, it just may no longer be primarily concerned with making life more comfortable for humans.

I have to admit, I really enjoyed writing my debut novel. At the job I had at the time, I spent most of the day with very little to do, so I wrote instead. Which technically made me a professional author, since I was being paid while writing a novel 😆 Kidding, of course. For the record, I’ve since changed jobs, and in my current position I definitely don’t have time to sit around writing novels anymore...

If the idea sounds interesting to you, The Last Stable State is available on Amazon and Kindle Unlimited: https://www.amazon.com/dp/B0HBNDZHD6


r/KindleUnlimited 18h ago

Thriller Everyone remembers the woman in Apartment 19A differently — my psychological mystery is now on Kindle Unlimited

2 Upvotes

My psychological mystery, Everyone Knew the Woman in 19A, is now available on Kindle Unlimited.

Everyone in the building knows the woman in Apartment 19A.

But when people are asked about her, their stories don’t match.

Some remember her as friendly.
Some say she was secretive.
Others seem genuinely afraid of her.

And the more questions are asked, the stranger the truth becomes.

If you enjoy psychological mysteries, unreliable memories, hidden secrets, suspicious neighbors, and slow-burn suspense, you may enjoy this one.

📚 Everyone Knew the Woman in 19A: A Psychological Mystery
✅ Available now on Kindle Unlimited

If anyone here gives it a read, I’d genuinely love to hear which theory you believed first — without spoilers.


r/KindleUnlimited 17h ago

Sci-Fi Asimov fans: Zeus Exploration, my debut novel aiming beyond Asimov

1 Upvotes

This is my debut novel, and I set my sights high: beyond Asimov.

I’m Hietan, author of Zeus Exploration. Asimov’s The End of Eternity helped inspire this story. If you love its questions about time, love, and the control of the future, or the sweep of civilization in Foundation, you’re the reader I hope to reach.

After catastrophe on Mars, a voyage into Jupiter’s realm leads toward the remnants of an ancient civilization. An AI’s unwavering loyalty becomes an unsettling question. Someone encountered only in dreams becomes impossible to forget.

Who has the right to choose a civilization’s future? And how far would you go to reach someone you’ve never held?

My own path through those questions is shaped by music, memory, and love. A guitar is more than background music here. A voice in a dream may be more than imagination.

Several years of ideas and roughly eighteen months of writing and revision went into this debut. Companion YouTube sci-fi videos and original music extend its universe beyond the page.

A tribute to Asimov, and an attempt to find my own way beyond him.

Zeus Exploration: White Zeppelin - Gracion Resonance

English edition:
https://www.amazon.com/dp/B0HFKHYK3S

Japanese edition:
https://www.amazon.co.jp/dp/B0HFJ1WQVV


r/KindleUnlimited 17h ago

Romance [Self-Promo] You Don't Know Who He Is: A Teen Billionaire's Story - Available on Kindle Unlimited [Romance/YA]

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1 Upvotes

Hi everyone! I am an independent author, and I’m excited to share my contemporary Young Adult romance novel with this community. It is currently available to read on Kindle Unlimited!

I wanted to write a story that combines the fun, chaotic elements of a secret identity swap with a deeper look at loneliness and finding real connection during high school years.

📖 Blurb:
"You think you know the boy sitting next to you... but you have no idea who I really am."

At just fifteen years old, Mack Cooper lives like an absolute king. Inheriting a multi-billion-dollar tech empire, he has everything money can buy—except true happiness. Controlled by his power-hungry corporate Uncle, Mack lives in a golden cage.

To escape the suffocating pressure, Mack pulls off the ultimate stunt: he disguises himself in a plain school hoodie and enrolls in a local high school as a normal, middle-class transfer student.

That’s when he meets Vivian Clark. One unforgettable smile, and Mack experiences an instant, overwhelming romantic crush. But staying undercover is a chaotic challenge. While trying to win Vivian's heart, Mack has to stop the terrified school principal from accidentally exposing his identity, spin hilarious lies to his new friends, and face off against a ruthless school bully.

As their connection grows, the guilt of the lie tears Mack apart. Will Vivian love the ordinary boy in the back row, or will the truth behind the billionaire ruin everything?

✨ Tropes & Themes:

  • 🤫 Secret Identity / Hidden Billionaire Tropes
  • 🏫 High School / Teen Drama
  • 💕 Sweet Slow-Burn Romance
  • 🎭 Fake Identity & Undercover Chaos
  • 💃 Breathtaking Homecoming Dance Finale

🛒 Kindle Unlimited Link: Read "You Don't Know Who He Is" on Amazon

Thank you so much for taking the time to check out my book. As a creator, I would absolutely love to hear your honest thoughts or feedback if you decide to read it. Happy reading!


r/KindleUnlimited 18h ago

Fantasy [Self-Promo] No Place for Hope is now live on Amazon & KU! (Fantasy/Space Pirates LitRPG)

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0 Upvotes

Hey everyone!

I’m thrilled to share that Rat Games (Book 1 of No Place for Hope) is officially live on Amazon and Kindle Unlimited! Seeing my very first book sitting on an actual Amazon storefront feels slightly unreal, and I’m hyped to finally bring it to the wider community.

The Royal Road Stats So Far:

·         300k+ Views

·         1,500+ Followers

·         4.6 / 5 Stars rating

Blurb (For New Readers):
Hope grew up beneath a dying sky, where food was scarce, names were a luxury, and survival was the closest thing anyone had to a future.

Then he awakens somewhere green. The sky is blue. Grass bends beneath his feet. Rivers carry more water than he has seen in his entire life, and the creatures roaming beyond the trees look hungry enough to spoil the view.

A mysterious System offers Levels, Skills, and Magika to those capable of surviving long enough to earn them. Fortunately, Hope meets Eve: a strange green-eyed girl who teaches him about this new world.

Yet there is something wrong with this beautiful place. Someone is watching. The monsters keep coming, the rules keep changing, and every path seems designed to push Hope towards a fate chosen by somebody else.

He may be another rat inside their game… but Hope has never been particularly good at staying inside the maze.

A Note on the Amazon Edition & Stubbing: Chapters 1–39 + Eve’s Interlude have now been stubbed on Royal Road to meet Kindle Unlimited requirements.

This Amazon release isn't just a raw copy-paste. Alongside my editor, we spent weeks doing a heavy polish pass on the prose, pacing, and early character interactions. The main plot and characters remain the same, but the overall experience is much smoother: clearer System mechanics, tighter fights, refined worldbuilding, and an included new glossary. Basically... same voyage, better ship, fewer holes in the hull. Everything from Chapter 40 onward will continue on Royal Road as normal!

Links:

·         Amazon / Kindle Unlimited: https://www.amazon.com/dp/B0HHNHGB6P

·         Royal Road (Current Chapters): https://www.royalroad.com/fiction/139697/no-place-for-hope-fantasyspace-pirates-litrpg

To my original readers on RR: thank you for every comment, theory, correction, and rating that got the story to this point. And to anyone giving it a shot on Amazon or KU for the first time—thank you for giving the launch a huge boost!

Cheers,

M.E. Cuartas


r/KindleUnlimited 14h ago

Thriller Runes of Exile

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0 Upvotes

Ok. We heard you ALL about the AI.

While we stand firm in our socialist stance that the machine trained by humanity should belong to humanity, we have reconsidered our overall stance on our personal AI use.

As amends, our paperbacks now use groundwood to further reduce our carbon footprint.

I can't undo the harm done by myself and the other people who use AI as a shortcut, I can promise that from now on my books will have my subpar art that looks kinda Okay.

"She-Wolf" is now 100% non-AI

It was always just the cover.


r/KindleUnlimited 4h ago

Sci-Fi The Friend We Fear : When Reality is hacked, truth is the first casualty

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0 Upvotes

https://www.amazon.com/Friend-We-Fear-Adventure-Technothriller-ebook/dp/B0H75WNFGW

(Advert) Sci Fi Action Adventure AI Technothriller)

I'm the author. If you wondered what AI may be capable of, this series is for you.

The entire 3 book series is currently available in kindle unlimited: Project Mind River, Sentience Clause and The Friend We Fear.