Sublimia Syndrome

by Exurb1a

In the distant future, humanity has floundered among the stars for almost a million years. With Earth forgotten, and the secrets of nature decoded, only one great unknown Who were the Big Sisters?

On countless worlds we find their ornate ruins and impossible universe factories, time-travelling mountains, and dictionaries of the exactly-right-words. Who created these things and why? Surely they were a cousin of humanity, some long-forgotten offshoot of our species. Yet their absence is as much a mystery as the miracles they left behind.

From the collapsing halls of the galactic social engineers, to the nebula laboratories of the cosmic whales, Sublimia Syndrome is the story of five seekers, separated by millennia, desperate to reconcile with the once-great true adults.

Genres: Science Fiction, Fiction, Space

296 pages, Paperback

Published August 29, 2025

About the author

Exurb1a likes fiction with a metaphysical backbone. He enjoys trying to write that kind of stuff himself.

He also runs a subpar YouTube channel of the same name.

Reviews

[Jen]

It's ye organism, back yet again to metabolize oxygen and incubate new sense-making afflictions for the epistemically diseased constituency still nursing fascinating sequelae from the last round of home brewed pathogens I sent circulating through this enshittified, social cataloging capillary bed of a horses ass. And here I have one simple question:

Have you ever, while on the line with a 911 operator explaining how your uncle, whilst roistering about the byways of your adolescent incredulity, drew your attention to his enormous and weathered palm, (gesturing archly with brows and emotive mustache) then proceeded, bloodlessly and with inhuman equanimity in the face of bodily destruction, to detach about a quarter of his left oppositional appendage from the first metacarpal and nonchalantly wave it about like a trained hypnotist? Did you then encounter a kind of infantilizing reassurance from the operator which prompted your voice to oscillate around one octave above middle C and reply: "He's coming for my nose next, you bitch! Ahaaaaaaaaa! AAAAAAAAAAAAAAAAAAA! EEEEEEEEEEEE!"? With sounds of three-dimensional networks of SiO4 tetrahedra shattering in the background and ending with the high decibel shriek of a white bellbird and the word "NO" appended with many big and miniscule O's? (eg. OoOoOoOoOoO)

This is Sublimia.

Have you ever, while watching the penultimate scene in Sling Blade - wherein Karl, responding to the inquiries of his juvenile interlocutor regarding the alleged presence of peckers in potted meat (after first chiding the wayward youth on certain lapses of social etiquette) - stared down into a slimy can of Vienna sausages (of which one such, half masticated and being chemically assayed by microscopic clusters of gustatory cells in your face-dungeon, continues to confuse issues of etiology w/r/t meat adjacent miasmas) and thought, "I think I see one right there..." at the exact moment that Karl says, "Lookee right 'dare. I believe you right, I believe I see one right in there. Mmmm."? Causing you to confront the hideous nature of consumption and to question whether taboos on dick-skin ingestion would constitute some impasse w/r/t the whole, like, trophic energy cavalcade of sightless critters reorienting on the basis of chemical gradients, fractal lamina dirty dancing with energetic particles for ranks of enameled mortar and pestle to stridulate pulpy to facilitate the formation and movement of the tissues onto which sanguine muzzles latch - and the answer is clearly a resounding no (but this time without the repeating decibel (sp) of O (or o's)'s) and if you should disobey your father's commands not to swim in the deep then the sharks will most assuredly perform a traumatic currency exchange on your phenotype from which they will derive amino and fatty acids inside the spiral-shaped valve of their intestinal tract before extruding from their cloaca an ocean fertilizing waste cloud that was formerly conscious (that is to say: you) to enrich phytoplankton and supplement the diet of smaller fish.

This is Sublimia.

What is Sublimia? You be the judge.*

*Lovely collection of connected short stories set in a distant future (growing more distant with each subsequent tale) exploring the mind's brushes with knowledge at the threshold, liminal epistemology which produces a welter of symptoms (i.e. Syndrome) when a human container attempts to circumscribe transcendental knowledge embodied in the strange artifacts left behind by a civilization of godlike power. 

[ZoS]

I’m not very good with words, nor will I try to be, but it’s a beautiful book. It’s still felt weird to have a happy ending (sort of) from him, but that’s something I adore. There are also numerous hints to other works (perhaps) by him that, for those who follow him closely, would be appreciated. Anything more than this would spoil the thing, but if by chance someone is pondering the thought of whether they should read this. I’d say just forget what you’re so sure of and embrace the uncertainty; you’ll have a great time reading it, I promised.

[Noahtnm]

I love Exurb1a’s writing.
No other author has me rereading passages this often.

Sublimia Syndrome is a novel about the human condition, about our incessant need to make sense of things, and the almost impossible task of making peace with not knowing.

What first seems like a problem only scientists and philosophers wrestle with turns out to be a problem of consciousness itself. Sublimia Syndrome feels real in that sense. When you truly stop and ask what the hell we’re doing here, where “here” even is, what “now” even means, you realize we don’t know a damn thing.

Humanity has been trying to fill that gap forever: religion, science, and philosophy are all desperate attempts to make sense of the senseless.
But Sublimia Syndrome asks the more pertinent question: Does it even matter?

It poses that question, and all the ones before it, in the most quintessentially Exurb1a way possible: with prose you’ll find nowhere else, stories no one else could write, and characters you won’t forget.
While the writing occasionally feels a bit on the nose, it never feels unearned.

At its heart, it’s a story about the scariest thing that exists, and somehow, it leaves you comforted.

I can’t recommend this enough.

[Adwitiya (অদ্বিতীয়া)]

It was like reading a spiritual text for me. All of my petty worries and hatred seemed so small for the duration of the little while I spent in exurb1a's world. I have been following him since my adolescence and his philosophies and musings always hit too close to my soul.

~ 19 December 2025

[Tom]

A fun dive into the far future of human civilization using 5 short stories about people that share a similar fate.

[Alice Van]

What a treat.
This book captures very human existential struggles, that we will apparently suffer from even hundreds of thousands of years from now. While the stories are generally tragic and emotional, it's somehow still very comforting to read and let yourself get dragged into this absurd and frightening sci-fi world.
Also, a great balance between very dry/funny dialogues, and (almost pretentiously) poetic verses.

"We leave this pock-marked world below and the other worlds behind; all the fumbles and mistaken confidences, all the tried-our-hardests and couldn't anyways, bound now for the big maybe, the middling what ifs, and the very little, but very real comfort that all our questions might not have answers, but at least we've found the courage to ask them aloud now."

[Abe]

To Exurb1a (and others)

This is one of the rare ones that speaks truth into being through fiction. Thank you. This is without a doubt a brilliant work of science fiction that deserves more accolades than it may ever get and, that is truly a shame. It is a shameful testament to the mass market garbage that gets all the attention and accolades these days because it will be a guaranteed sale.

If you've never read a book by this author know that he is one of the greats. His imagination and skill make me honestly a little jealous. Every one of his books are worth reading at least once, but this one is by and far the best of them. His use of language, plot, and metaphor are on another level here, and I challenge anyone (especially a parent) to get to through it without being moved.

Finally, to all that may read this, really, really think about what this story is saying. When you read it some thing(s) happens in your mind, and that is something few authors could ever pull off. Truly only the greats can do what's done here in this text!

I will impatiently await your next release...

-GA

[Helene]

schwanke zwischen 4 und 5 sternen aber die ideen hinter den einzelnen geschichten waren einfach so fantastisch und gut umgesetzt und ich habe es geliebt, dass die aufeinander bezug genommen haben, also erstmal 5. Mini-Minus war für mich die letzte geschichte, weil ich die nicht zu hundert prozent gerafft habe und viele fragen für mich unbeantwortet blieben, aber denke mal das ist sinn dieses universums.

[Devathi]

This has to be one of the most wholesome books ever written. Brb, crying.

[Sam Lippincott]

This feels like a conglomeration of all his past works. Particularly a revision of my favorite

[Tony Cruise]

As promised, it was more pretentious than the last ones and I hope the next one is even more pretentious. 4.5/5

[Jun C]

Something Harder to Name

I usually prefer books that keep their feet somewhere near the ground. I like facts, arguments, evidence—the reassuring sort of books from which one can emerge carrying a few new pieces of knowledge and perhaps the modest illusion of having become slightly wiser. Sublimia Syndrome, by contrast, seems to have looked at the ground, considered it unnecessarily restrictive, and left without it.

What follows is science fiction, philosophy, metaphysics, cosmic archaeology, and occasionally what feels like the result of an unusually intelligent mind being left alone with the universe for too long. Humanity has survived long enough to cross the stars, manipulate time, manufacture miracles, and become almost indistinguishable from the gods it once invented. Naturally, after accomplishing all this, we are still looking for someone older and cleverer to tell us what any of it means.

The Big Sisters become that someone: an impossibly advanced civilization whose traces humanity pursues across absurd stretches of space and time, rather like children searching an enormous house for the adult who surely knows why existence has become so complicated.

Except the adult may not be home. Or may have left behind a machine capable of creating universes and assumed that this constituted a perfectly adequate note on the kitchen table.

At times the book carries the cosmic mischief of Douglas Adams; at others, the lighter, stranger grace of Italo Calvino. Exurb1a seems happiest somewhere between the two, asking questions large enough to require several galaxies and then puncturing their solemnity just before they become too pleased with themselves. The universe grows more mysterious by the page, but somehow less intimidating.

When I finished the book, my first reaction was embarrassingly simple: what exactly did I just read?

And yet I had the unmistakable sense that something in my mind had become more spacious.

I could not have produced a respectable list of lessons learned, nor explained with much confidence what new wisdom I possessed. It felt instead like discovering a door in a familiar room that had somehow escaped notice for years. I did not know where it led. I only knew that the house had become larger.

And it was somewhere in that sudden widening that the title ceased to feel like a title at all. Sublimia Syndrome no longer seemed merely like something happening to the people in the book. I had begun to recognize a faint version of it myself: the peculiar dizziness of realizing that the world may be larger than the mind one has brought to understand it.

That was probably the most interesting part of the experience for me. I am accustomed to the satisfaction of understanding; this offered instead the exhilaration of not quite understanding. Not the comfort of adding another volume neatly to the shelf of the mind, but the sharper pleasure of encountering something for which one does not yet have a name.

For all its galaxies, impossible technologies, and metaphysical gymnastics, Sublimia Syndrome remains wonderfully human. Apparently we can conquer death, alter our bodies, outlive civilizations, manufacture universes, and travel to the edge of existence, but some small part of us will still sit beneath the stars asking, with complete sincerity, “Yes, but what does it all mean?”

Perhaps that question survives because it was never meant to be finished. Perhaps there is something strangely consoling in the thought that even at the edge of the universe, curiosity may outlive certainty.

I am still not entirely sure what I read.

Normally, that would count against a book. Here, it became part of what made the experience memorable.

I went in looking for knowledge and came out carrying something considerably harder to name.

[Rose Odonnell]

This book was a perfect blend of outrageous sci-fi and metaphysical parable, embedding questions of time, space and humanity into well driven short stories. Although the characters were all thousands of years in the future, their emotion was so beautifully written you cannot help but grow attached to them, even the different characters themselves stretch across millenia but each story is cleverly intertwined with the common theme of the human condition. No matter what planet, or timeline each human is looking for answers and trying to understand their place in the world. The book is split into 5 short stories, ranging in length and narrative. My favourite was the third: "the myth of blue time", I enjoyed the split between first and second person and as a philosophy of science student the weird time travel communication aspect really spun my head but intrigued me. I feel I understood the writing more as I went on, it handles big topics and is set across the universe so an open imagination is needed for this read, but once you allow for the mind boggling settings and technology described it is easy to read the human story Exur1ba is telling. This is my first Exu1ba book but as an avid fan of his youtube channel, this won't be my last! If you're looking for philosophy, science, existentialism and emotion, this ones for you!

[Max]

Perfect piece of literature. A collection of short stories leading you through the development of the human species. great characters and great connections between the stories and the whole book.

It's a book with 5 short stories about the development of the human race throughout millennia chasing after a race that has already reached sublimia and has left their ruins behind. Each story has its own new discovery and theme with its own characters and plots. They each evoke different emotions, but all fit together perfectly in the progression of human kind where humans are first banned from exploring the big sister (predecessor) region, as would happen with us rela humans if we found something scary that we didn't understand. All these stories come together during the last short story where a human and his family travel into sublimia, finally find the pathway to the end of the world, to an all knowing future, to the big sister predecessors they have been chasing the whole book.

Would and should definitely read again.

[Kay]

It's so beautiful that it made my looking balls leak.

Now that I've had some time to think it over, here are some more thorough thoughts.

This book is a series of short stories tied together by the overarching themes of the "maturity" of civilizations and objects left behind by "The Big Sisters," a "mature" civilization. Items left behind by the Sisters have tremendous impacts on the humans who encounter them, often causing the titular Sublimia Syndrome - essentially having your mind blown by something that shouldn't be possible.

The creativity of the artifacts and the twists surrounding them are the strong points of Sublimia Syndrome.

The weak points are characterization, and really most material aspects of the story. Ask me what any of the characters look like, I can't tell you other than saying the whales look like whales and the old woman is old. Ask me what the planets we visit are like - idk. What do the whales' homes look like? No clue.

I can confidently say that I will never think about them outside of the book.

I still found it enjoyable.

[Max Savenkov]

I don't quite get this book. It provides a number of pictures from a distant future, where people try to solve the mystery of Big Sisters - a possible human, very advanced civilization that disappeared and left behind impossible artefacts and ruins. But I don't think the book is really about this: by the end, we don't really have much more information about Big Sisters than at the beginning. If so, then I'm missing a point of it all: to me, this set of stories seems largely meaningless, and while each story in isolation have some interesting elements, they're not really clever or novel enough to warrant a high mark.

And frankly, I find the whole "sublimia syndrome" stupid. So what if Big Sister tech seems impossible to understand? Lightning and thunder were impossible to understand to cave people, and they didn't have any such syndromes.

[Vaughan James]

This is a profound exploration of humanity, through the expanse of time, and history of knowledge. It could be a dialogue of philosophy, a poem or a large question to our past and future. I can’t think of a book that I have highlighted so many quotes, and indeed will have to revisit them. It avoids the clichés and obvious references to history, but in a poetic sense, we get the universal truths. It gives you a profound sense of intellectual relaxation in that one need not worry, about the unexplained. It feels, almost Buddhist in its intensions.

It poses questions of the benefits of science, and the interpretation of philosophy..
But ultimately, the more we know, the less we know, all, while we are trapped in our flesh computers.

[Josiah]

Exurb1a's writing is so readable while touching on ridiculously complex themes within captivating plots.

This book is some of the best work that science fiction has to offer. The use of the distant future reminds us of what makes us human. Reading these books is an important reminder that no matter how advanced technology made my human hands gets, there is more complexity in the mechanics of how a thought moved that hand in the first place. These stories made me cry because this book, no matter how complicated the physics, is just a wonderful attempt to process and share very human, scary, oftentimes sad, feelings.

Oh and and the bits of Persian poetry strewed among the physics babble? Perfection.

[Anca]

A brilliant work, as always! wish I could re-experience all the books as if reading for the first time again, it's truly a sense of Sublimia.

"Not the heart, but the mind. We were told that minds are made of neurons and atoms and quarks and loops. None of these are the case. Minds are made of ideas, and ideas are made of words. And in the subtle manipulation of those words, one either dominates or liberates a person or an entire culture. The first technology was language.”
“I think the first technology was fire...” I murmured.
“Because you’re an idiot.”

[Steven]

fye per usual, a mind trip but very engaging. Definitely need to have to have a good energy to follow, but I really enjoyed it. Was cool to see the previous characters come back in the final chapter, which kind of ties everything together on the theme of the book. The last chapter being a reverse of the son and father was very revealing (i’m sure there’s a term for that) and was just overall a joyous experience. I’m sure i’ll read again someday (although I’d imagine i’d read the fifth science again first).

[Bryan Frantz]

“I saw into my bones and my heart and found two new truths waiting there: that people are flawed, and that some things will always be beyond understanding. And I knew that if we could all live with those horrors, then the rest of life would be ours since no disaster could ever come by surprise, and no revelation could ever disappoint us with its failure to materialise. It would always be now, and we would always be lost, exactly where we should be: in the dirty broken perfect of the mystery of the world.”

[Matthew Anderson]

It kind of expands on perhaps my favorite story from the fifth science, with the idea that some very advanced knowledge can be too much for human brains to handle. There are plenty of sci fi concepts you're probably familiar with done in a slightly different way, plenty of bizarre scenarios that almost feel more like fantasy than sci fi, and overall pacing and characters that make it a thoroughly enjoyable book from start to finish.

[James W.]

Worth its Weight in Gold

Exurb1a’s best work, in my opinion. We seek final answers to questions we haven’t even asked yet. Always yearning and wanting more, never satisfied. Does it go on forever or do we eventually mature and learn? This book seeks to offer the writer’s views on this topic through 5 individuals wondering the same. It’s wonderfully well written and incredibly insightful

[alex climie]

definitely feels like an amalgamation of many of the ideas from his youtube channel, and that works pretty well. it's interesting to see the evolution of characters' archetypes between his stories; like the old woman master is clearly drawing on a very similar character as the old lady witch in "and then everything will be okay" video (the entire last story has very clear parallels to that video actually). as someone who loved that video, that's cool with me

[Chance Harvey]

Beyond incredible. A gorgeous, perspective altering book. An absolutely stellar read. This book speaks deeply to my core. 4 semi-interconnected stories throughout time. The final story is groundbreaking for me. This is probably the best ending to any book I’ve ever read. I highly recommend it to anybody. Listen to this playlist along side :) https://open.spotify.com/playlist/0mr...

[Innireads]

this was a great read. the whole time I was reading it I couldn't help but make connections to Exubr1a's "Then Next Comes" video. I was super surprised to see Metodi making an appearance. I finished "The Fifth Science" just as this book was announced so it was a welcomed surprise. looking forward to his next drop.

[Connor Ringling]

Ahh, yes. Another healthy dose of existential angst.
Exurb1a blesses us once again with a glimpse into a distant spacefaring human civilization that leaves us with grand ideas too strange and abstract to talk about with friends. To hells with them anyway.
This is a must read for the fans who love his other popular works. And for the ones who haven’t, this is as good a place to start as any. Happy travels

[Colin Patrican]

I love Exurb1a’s imaginative writing, and this one went deep. My only hang up is the lack of grounding. It felt like Neuromancer at times where he’d throw you into a situation or action without setting the scene or giving any kind of explanation. I’m all for obscurity but untangling his far-reaching futuristic concepts came as a struggle. At least for me.

[Dylano Arkie]

well written, nice story.
went in thinking it was a whole story so I was kind of disappointed the first story ended so quickly. that's more of a me problem and less of a book problem though.

the stories are nice. the twists are somewhat predictable but that doesn't mean they're not enjoyable.

[Filip]

I liked the ideas, the twists, and the general vibe. I liked that even though there were separate stories they were connected. But it was difficult to remember everything sometimes, especially with deliberately obfuscated text