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Hello, World!

Not yet published
Expected 23 Mar 27
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Hello, World! introduces a high-flying, high concept debut from a major new voice that reads like if David Mitchell wrote Greta Gerwig’s Barbie.

A perfect reality. A broken family. The secrets that will unravel everything.

Aleta Seppala is living what ought to be an idyllic life with her husband and daughter—every preference accounted for, proof of what a well-crafted world can offer. But one day, she disappears without a trace, leaving a grieving family and community behind.

Elliane Seppala grows up believing that her mother abandoned her. Her father, Ted, thinks his wife was taken, and he suspects his friend and business partner. Their misery and loneliness aren’t supposed to be possible, not here. Not in World™.

World™ was created to be perfect, a virtual reality constructed as a shelter from the devastation of the real world. Enter your Preferences, say goodbye to your own reality, and plug in. Here, you can choose every detail. You can manufacture the right house, the right memories, the right life. If you hate rain, make every day sunny. You can banish mushrooms and pumpernickel bread from your world altogether, or even make all food taste like dessert. If self-doubt controls your life, you’ll become the confident person you never were. The only price? You must leave everything behind. No ties, no memories, no baggage. When you wake up in World™, you are free.

When Elliane meets a mysterious stranger who claims to know exactly what happened to her mother, she discovers that World™ might be falling apart, glitch by glitch. As Preferences collapse and the increasing glitches threaten to destroy everything that matters, real and fake, Elliane is running out of time to uncover the secret that has clouded her heart for the better part of her life. 

Equal parts deliciously escapist and stunningly profound, Hello, World! asks what the human brain is capable of, whether we’re hard-wired to repeat our own mistakes, and what happens when we get everything we ever thought we wanted.

615 pages, Paperback

Expected publication March 23, 2027

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Karisa Tell

2 books4 followers

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Displaying 1 - 15 of 15 reviews
Profile Image for Stephanie Peterman.
209 reviews4 followers
Review of advance copy received from NetGalley
September 9, 2026
a huge thank you to netgalley and the publisher for the ARC. this one was right up my alley!

this author's imagination and attention to detail are really something special. i don't think i've felt such a wide range of emotions since Tomorrow, and Tomorrow, and Tomorrow. i'd honestly put these two in the same category of favorites. it's got speculative fiction with a digital simulation slant, true laugh-out-loud humor, and snarky, farcical commentary on the ridiculousness of post-pandemic culture and capitalism. in Hello World, readers get an intelligent, yet heartfelt message about what happens when you opt out of reality and into a digital "World" that initially caters to your every need, but ultimately grows more and more like the technology we consume today — buggy and enshittified.

some of my favorite World spoofs:

• Gisney-star-turned-pop-singer who sang about destroying things with hammers
• Boolean Day
• She Gone (this one had me rolling)🤣
• Prosecc-sual Healing
• Greenback Bowls
• DeliPro Shapez

… and perhaps the best paragraph i've ever read:

"She ran past the Tilt-a-Hurl and the Kiddie Coaster, past the Everything on a Stick booth and Everything Is $3 booth and the novelty patch dispenser, past the hall of mirrors and the cowgirl on stilts, past the ethically dubious display of exotic animals, weaving between men wearing shirts that said FBI: Female Body Inspector, and women who weren't necessarily "pulling off" their outfits, but good for them anyway, past the barn where, As Seen on a Screen products were being demoed by out-of-towners whose teeth had been whitened by products that they, in turn, had seen on a screen, past the will-call line where people of all stripes who responsibly preordered tickets to this horror show still had to wait in line to get in, past the front gates, where a rent-a-cop informed her sleepily about the no-reentry policy, to whom she shouted GOOD, past the cars parked anarchically on a patchy lawn that never stood a chance, past the freeway exit vibrating with reggaeton and CO2 emissions, past the big-box store where they usually purchased their seltzer in bulk, past Elliane's preschool, past a pond Elliane once fell into, a story as traumatizing then as it was humorous now, down Maplethorn Avenue, up the drive of her own house, key trembling in the sticky dead bolt, mind trembling at that prefix—dead—up the stairs, into the closet, under the shoe shelf, beneath the loose floorboard, the one marked with a triangle."
Profile Image for Jensen McCorkel.
737 reviews13 followers
Review of advance copy received from NetGalley
September 21, 2026
An interesting premise and some ambitious ideas that provoke thought and blends speculative fiction, family mystery, and questions about what it really means to be human.

The premise immediately caught my attention. Imagine living in a world where you can customize nearly every aspect of your existence. Everything from your surroundings and experiences to the things you would rather avoid in everyday life. At first, it sounds like a dream, but the novel does a good job of exploring the darker side of getting exactly what you want.

What interested me most was the idea of being able to shape reality around your personal preferences. It sounds appealing on the surface, but the novel raises some unsettling questions about what we might sacrifice in exchange for a seemingly perfect life. If our surroundings, experiences, and even memories can be altered, how much control do we really have over who we are? And if we could eliminate pain, disappointment, and uncertainty, would we actually be happier? Or would we lose something essential about being human? The novel’s exploration of these questions adds an interesting layer to the story and makes its seemingly perfect world feel much more complicated.

That said, the world-building is sometimes more compelling than the characters themselves. The concepts behind World are fascinating, but there are moments when the technology and the ideas surrounding it take center stage, leaving the characters’ emotional development feeling somewhat secondary. The novel explores weighty themes such as family, loss, memory, and identity, but some of the more emotional moments don’t always have the impact they could. At times, the intellectual questions feel more fully developed than the human ones, which made it harder for me to connect with the characters on an emotional level.

Still, I appreciated what Tell was attempting to do here. Hello, World! isn't simply a story about technology or virtual reality. It's ultimately asking whether a life without pain, disappointment, or unpredictability would actually be a better life—and whether our imperfections might be exactly what make us human.

Overall, Hello, World! was a bit of a mixed read for me. I didn’t connect with every part of the story, but I really enjoyed the questions it raised about identity, reality, and what actually makes our experiences meaningful. The idea of being able to create a perfect reality is fascinating, especially when you start to consider what might be lost in the process. Even when the story itself didn’t completely work for me, the ideas behind it stuck with me and gave me plenty to think about after I finished.
Profile Image for Jenny.
239 reviews2 followers
Review of advance copy received from NetGalley
September 18, 2026
Hello, World! will absolutely be one of the best debut novels of 2027. It's inventive, ingenious, heart warming, melancholy, funny, and beautifully written; the kind of novel that resonates in your soul long after the final page.

In search of a better life, the citizens of World have plugged in and left the real world behind, memories and all. In the virtual reality of World they get to choose their Preferences and experience life exactly as they desire. Old wounds, failures, and disappointments belong to their former reality.

Aleta Seppala has used World to craft the perfect existence for herself, her husband Ted, and their young daughter Elliane. In the midst of a dinner party, that perfection comes to a halt when Aleta suddenly disappears, leaving her family to grieve.

An adult Elliane believes her mother abandoned her. Ted is desperate to get Aleta back. How can something so horrid happen in the utopia of World?

Things in World continue to deteriorate as a series of glitches wreak havoc, and its citizens are left to cope. Some cope by worshipping the Simdevs (the perceived God-like creators and overseers of World), while others contemplate unplugging and going back to the real world. Still others deal with the chaos by forming close relationships within World. In the wake of the glitches, Elliane and Ted are left to wonder whether or not Aleta's disappearance was out of her control and, if it wasn't, is she gone forever?

Hello, World! is told from the viewpoint of multiple World citizens whose lives intertwine in expected and unexpected ways. Readers interested in speculative fiction, as well as fans of authors Karen Walker Thompson and Nikki Erlick, will find much to love in this breathtaking novel.
Profile Image for Dave Milbrandt.
Author 6 books51 followers
Review of advance copy received from NetGalley
August 27, 2026
I received a complimentary copy of this book in exchange for an honest evaluation of its merits.

I like the dystopian premise if this book, a Truman Show-esque perfect world that isn't so perfect, but was not as much of a fan of the execution. I am OK with shifting POVs, but I felt I didn't get enough of the story of the main characters, or who they necessarily were. While it seems Aleta is supposed to be the central character, it seems more like that it is the love (and loss) story of Elliane and Jessa and the other characters, even Aleta, are secondary to that story. Also, the lack of positive male characters is not something I prefer (some might say Ted has some redeeming characteristics, but only a few and those come in toward the end if at all).

Also, I like a book that makes me run to my dictionary, but I would have liked more of that rather than the smattering I saw here.

Finally, again spoiler alert, the ending involved characters leaving one virtual world with glitches and entering another virtual world to solve their problems. This would seem t0 be trading one artificial reality for another and not solving the actual problem of letting the Preferences guide your life.

I am willing to concede this book may not have been for me and others may not be as worried about these areas of concerns as I was.
This entire review has been hidden because of spoilers.
Profile Image for Julie.
63 reviews3 followers
Review of advance copy received from NetGalley
September 15, 2026
Thank you NetGalley and G. P. Putnam's Sons / Penguin Random House for this ARC.
Hello, World! is an ambitious debut novel from Karisa Tell. Set in the future where everyone has plugged in permanently to a VR world, setting aside their memories and choosing their preferences which now control their experience. Aleta Seppala has the perfect life, a young daughter and adoring husband but one day she just disappears. Elliane Seppala grows up believing her mother abandoned her. World was supposed to be perfect but glitches have started taking things away. What is true and what is just preferences?
This challenging novel explores some really interesting themes. What is a perfect life anyway? Is it perfect if everyone around you is experiencing it differently? What happens to our relationships when our preferences for how we want things to be are taken away? Can you ever really account for the complexities of human emotions in a VR world?
Loved all the ways this made my brain have to think, especially in this time period of advancing AI technology and VR games.
Profile Image for Jensen Potrykus.
337 reviews11 followers
Review of advance copy received from NetGalley
August 10, 2026
Hello, World! explores so much of what it means to be human, along with that late-night stoner question of "what if life is just a simulation". In the end, we all just want to escape the inescapable. Whether this is grief, people with different morals, or just a food we kind of hate, can there really be a world where these things don't exist? And if so, is that world we have made real or just a blissful blindness?

There is something beautiful and horrifying about World and all those plugged in. This is a wheel that keeps turning and there is no getting off. Every choice made is the same as the original, no matter how much a character believes otherwise.

This is truly a special work that makes you think about what it means to be human in a world where more and more of our lives are online. Does making your online feed an echo chamber change reality or just put you in a little box where you are free to think that everyone is just like you?

Thanks to NetGalley and G.P. Putnam's Sons for providing an eARC of Hello, World!. This review is entirely of my own opinion.
Profile Image for Kayla Saurus.
173 reviews
Review of advance copy received from NetGalley
September 10, 2026
This is the exact kind of book I want to read!! Weird, thought provoking, and overall an intelligent story. Ive recently watched all four Matrix movies I could see where that inspiration came from, but this book pushes the concept of simulated reality a step further in a direction I always wished The Matrix had explored.

Funny, clever, and at times sarcastic this delivered a lot of commentary on our current capitalistic hellscape. This simulated World does not feel nearly as far-fetched or unrealistic as it would have 20 years ago. Also, I loved the addition of things like glitches, bugs, and planned obsolescence that something like World 1.0 vs World 2.0 would bring and how those who are in power would look at something like a simulated world. Which of course would be exploitative.

As a debut novel this is incredibly impressive and I think this novel will make waves with speculative fiction and weird girl lit fans.

Thank you to NetGalley and Putnam Books for the ARC in exchange for an honest review.
Profile Image for Darcy Bosque.
67 reviews1 follower
Review of advance copy received from NetGalley
October 8, 2026
This is set in a virtual world, where people have retreated to escape their real-world problems. Everyone has a "secret" set of preferences, which adapts the world to their liking. Told from multiple view points it follows the story of Aleta, who just disappeared from the world one day. After her disappearance a series of glitches start to happen, putting people on edge that the end of their world is near. The story grapples with what it means to be human, what makes a meaningful life, and what connections matter. The multiple points of view are expansive enough that it diminished the ability to get a strong sense of character from any one person, but it did provide a unique interwoven view of the overall virtual world. It brought up some existential questions to ponder, but suffered a bit from uneven pacing. Overall, I would say 3.5 stars.

Thanks to NetGalley and Putnam for the advanced copy.
Profile Image for Mirlen.
51 reviews24 followers
Review of advance copy received from NetGalley
August 13, 2026
Hello World!'s strength is in the name itself. The World these characters live in is fascinating. I loved that instead of just giving you information, the characters asked themselves (and each other) the same things you are wondering. Karisa blends a highly topical fantastical idea with realistic feeling emotions and relatable musings.

She also managed to balance the difficult of balancing a large number of POVs. Seeing how they began to intertwine as I got close to the end of the book was very rewarding as a reader.

I ended the books with a lot of questions and while I wish maybe I could've had a few more answers, I think that was part of the narrative power. I will definitely be thinking about this book for some time.

*Thank you to NetGalley and the publisher for providing an ARC in exchange for an honest review*
229 reviews2 followers
Review of advance copy received from NetGalley
September 21, 2026
Hello, World! was such an unexpectedly fascinating read. I loved the concept of a virtual world where people can create their “perfect” lives by choosing their preferences and leaving the messiness of reality behind. But when that perfect world starts to glitch, everything they thought they knew gets called into question.

This book made me think about identity, memory, relationships, and whether a life can truly be perfect if you’ve removed everything uncomfortable from it. It’s weird, clever, funny, and surprisingly emotional, with so many little details that made me stop and think. Such an impressive and imaginative debut!

Many thanks to NetGalley and Putnam | G.P. Putnam's Sons for the eARC!
#HelloWorld #NetGalley #PutnamBooks #KarisaTell
Pub. date: Mar 23 2027
2,941 reviews58 followers
September 27, 2026
God help me, I'm getting to books out in 2027 in my ARC pile. This one is due out in March 2027, and has a fairly interesting premise - what happens when the populace of a virtual world starts to experience reality altering glitches, to the degree that a wife of one of the characters is permanently erased from the world without warning. This book ends up being a take on the Leftovers, in that its focus is on how the community reacts to things that are largely beyond its control and random, and individual lenses of grief in the larger story. Our characters are largely a bunch of suburbanites who chose to plug into a simulation as the larger world went bad, and how they react to this world going bad as well. Definitely reflective, mildly nihilistic in its outlook, but a really strong debut from Ms. Tell. Recommended this spring.
Profile Image for Joan.
810 reviews6 followers
Review of advance copy received from NetGalley
September 27, 2026
This was a really cool premise and I loved how it was written! The multiple POV's and including their preferences with them as the story progressed was really cool!

The real world is going downhill and people need an escape, so they plug in to World and live their lives according to their preferences. Life is perfect... until the glitches start to occur.

The characters were great, as were the twists and turns the story took, then ending was a bit clunky for me, but I really enjoyed the ride this took me on! Though I don't see us all plugging in to live in the virtual world any time soon, it takes all the pain that we go through with technology like updates and bug reports to a whole new level.

I received this ARC on NetGalley and all opinions are my own.
Profile Image for jordan.
172 reviews1 follower
Did Not Finish
September 26, 2026
I got about 40% into this book and I do really think the world and setting are really interesting. The exploration of a religion-like respect for the developers who created the simulated world was well-done. I think I might have liked the story more if it was a bit more focused on World itself, some of the characters weren't that interesting to read. I may come back to this one eventually, but the main thing I struggled with was the pacing. The chapters will frequently cover the exact same conversations and scenes, only from a new character's perspective, and I found that sort of boring. It caused the entire plot to drag, and made picking this up not feel exciting. Still a cool debut!
Profile Image for Melissa.
Author 10 books5,390 followers
Review of advance copy received from Publisher
August 29, 2026
What a captivating, deeply clever, wonderfully strange book. I loved it. I read it slowly over the course of a week and by the end found myself honestly considering the possibility that I was living in a simulation. Not for fun, the book had just kind of crept up on and possessed me.
Profile Image for Erica.
46 reviews
Review of advance copy received from Netgalley
October 8, 2026
I really enjoyed this story and how it made me question how I would handle being in these situations. The story is told through multiple characters' POV. I disliked a few of the main characters, but I still think their POV were necessary and interesting.
Displaying 1 - 15 of 15 reviews