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The Fallen World #1

Dungeon Engineer

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They thought sacrificing her would further their own goals. Instead, they changed an engineer into the single most powerful fabricator in existence, a dungeon core.
Alexandra Rousseau, an engineer from the European Federation Star Navy with a past darker than the void between the stars, is unexpectedly launched into hyperspace when an FTL jump goes horribly wrong.

She wakes in a world of magic and monsters, encountering a mysterious Order with plans millennia in the making. When the Order makes a catastrophic mistake, transforming Alexandra into a dungeon core, they inadvertently give her the power to bring back technology long since thought lost on this world. With it she’ll make the Order pay and avenge the friends they’ve taken from her.

But first, she must survive those who would steal her core for their own benefit while keeping her true identity a secret from the adventurers looking to delve into her dungeon. If they knew the truth, the Adventurer Guild would seek to end her, and the Order would stop at nothing to finish what they started…

378 pages, Kindle Edition

Published November 22, 2022

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184 people want to read

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Alex S. Weber

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5 stars
409 (53%)
4 stars
209 (27%)
3 stars
100 (13%)
2 stars
34 (4%)
1 star
17 (2%)
Displaying 1 - 30 of 48 reviews
2,482 reviews66 followers
November 25, 2022
This fails to deliver on ALL fronts.

And engineer turned dungeon core promises ingenuity and creativity. What you get is everything is broken, nothing is challenging, and by the end of the book not one real group has run through the dungeon. The building sections are dull and repetitive. The main character is interesting during the prologue, but boring once turned into a core. The politics are somewhat intriguing if incredibly convoluted. The author has no idea how to write a dungeon core book, first book is done and still no dungeon. Just a few cheap golems and pointless traps.
Profile Image for Sydney.
1,339 reviews67 followers
March 24, 2024
4 Mudamudamuda Stars

Dungeon Engineer is the first book in the Dungeon Core Fantasy series tilted The Fallen World by Alex S. Weber.

What a truly fascinating book. The intermingling of sci-fi and fantasy tropes, with dungeon core flair, really places the basic premise behind this book in a convoluted league of its own. While enjoyed the many aspects that twisted this book into being so far from predictable. There were also moments where long explanations were terribly difficult to parse, or the overlay of two very different systems of power was difficult as well.

Sadly, nothing in this first book even touched on reaching back out to her friends from when she first woke up in leather armor. We didn't even make much progress along the dungeon progression path. This book was entirely backstory and world building, in my opinion. I'm not even sure whether this book will touch upon the normal dungeon core structure given how much it's been modified with fantasy and space travel aspects.

My hope is that the difficulty in understanding how the technological advancements of different nations and organizations connect will settle relatively soon. It's still difficult to understand how, if at all, her Earth relates to this new world and varying sources of power and defense capabilities. Magitech, adventure classes, guns, plasma weapons, aircrafts, and spaceships. It appears as a jumble rather than well thought out of explained, at this point. I am, however, excited to see where the author takes this.

Also, there are so many characters I already hope to see become a more prevalent presence within this story. Or perhaps at least the individual groups don't outright become enemies.
122 reviews
December 14, 2022
Couldn't get into it (not likeable characters)

I only read the first 3/4 of the book, and it was a slog... there were some interesting aspects to the story, and the world things were put into is awesome. I like the connections hinted between magic and technology, but I just couldn't connect to the characters. I don't like them, and I don't care how things turn out. It doesn't matter if the dungeon gets stolen, I don't care if the murderous Rouge or the buxom elf thief get caught and have to pay for their crimes (the author tries to make them victims, the poor elf who was being held down by the evil count, the misunderstood Rouge who accidentally murdered her cousin for real, instead of just for pretend, who then turned into criminals for real for years...)

And then the way things were forced to turn out this way, the bad guys always know where the 'good guys' are, and the good guys don't really even acknowledge that a threat is real, a few low grade bodyguards, when the bounty is big enough to entice the big boys to come and play, a hunted murderer who walks right into a big city and announces her name, and then instead of going into hiding (as she is hunted and just announced herself) she just goes to the local bar and gets wasted and sleeps with her hot elf friend (also annoying)

I don't like any of the characters, which made me hate the book.
Profile Image for Amber Kluttz.
117 reviews9 followers
July 4, 2023
Falls short.

Very little new here. A lot of the same cringe tropes that fill the genre, Isekai, mentions of anime and RPGs that the MC should have little to no knowledge of, genre references. It's just... Old. Tired. What could have been an excellent story is just bogged down in unnecessary excess.

Also, the book has poor editing. A lot of words are misused, or misspelled. Like the difference between martial and marshal. Stuff like that is pretty common here.

Some people that are diehard core fans will probably like the book, but to my personal tastes it's just meh. Nothing inspiring.
7 reviews1 follower
December 28, 2022
A Space Navy Engineering Officer gets isekai'd. Alexandra quickly becomes an adventurer in this new world. She is working on learning the ropes when people attack her and her new party. They plan to capture and turn her into a dungeon core under their control. Things go sideways, and she ends up free with plans for revenge.

This story reminds me of some of the works I've read by Benjamin Medrano. Overall this is a decent first book of a dungeon core series. The fact that Alexandra starts out experiencing the world a bit before becoming a dungeon core adds more to her motivations than most books in this genre get. The characters all have interesting backstories and plenty of room for growth. My favorite aspect, however, is how often Alexandra fails when trying to build things as a dungeon core. Most cores have everything given to them and only have a few failures in R & D.

The author spends a decent amount of time doing world-building in the background without overloading us with information dumps. Each country in this story felt distinct to me and not just simply cookie cutters of one another. The idea that the reason for technology and magic comes from them being uplifted in the distant past by aliens is fun. People, of course, ruin things themselves to the point the aliens come back and stomp down the problem makers and leave behind watchdogs.

Any world that gets many visitors will have protocols for when this happens. So it was nice to see something like that here. However, I can't entirely agree with how friendly these people were to Alexandra. Still, a harsher reception would have changed the whole tone of the story to something darker than the author was going for.

This sort of magitech system is always interesting to me. I believe that a magic-based society would develop towards a magitech society given time if magic is ordinary enough. However, I also enjoy hard magic systems with strict rules. Book two comes out in march, and I will be reading it.
190 reviews4 followers
December 27, 2024
Pretty good world building +minor complaints/trigger warning

>debated to give it 4 stars. Trigger warning at the end.<

As stated, the world building was surprisingly good. Considering how little of the world we really know, what we do know is very interesting and decently dynamic. Different countries and cultures, while not vastly different, feel distinct and real.

The characters are similiar.

I wanted to really dig into the tech/magitech rigged dungeon building. The novel's name sake. But it kind of didn't commence. The book was more concerned with setting up the world and everyone other than the MC. I almost know more about other characters than I do the MC or her new friend. That changes to definitely know more if they're added up together at all.

I'm kind of miffed at the set up, like I'm supposed to be, but I'm unsure if I will like where the story is going at this rate. That it might take too long or get too side tracked is a distinct possibility.

I'm also a little displeased that there was no hint (that I noticed) of the ubiquitous existence of lesbians. Not necessarily that there were any but that this is almost like an inverse harem light novel. If there is a female and she is attractive or described in detail she WILL love the mc in harem lit; or in the case of this novel, she WILL be a lesbian and probably is or will be soon in a relationship. And you are supposed to like it. Now it definitely wasn't as in your face as others, hence why I was mostly fine with it. But it is kind of everywhere. I just wished that a unique element of such prevalence would have been mentioned for both those who seek it and those who want to avoid it.
Profile Image for Lana.
2,711 reviews57 followers
November 15, 2022
This is a dungeon core fantasy adventure, and the first book in the series The Fallen World, in which we find Alexandra Rousseau, a topnotch navy engineer who finds herself transported out of her own world into a world of magic and monsters. She is told by the Nardria Guild Hall that she is an extradimensional. This seemed to make her very powerful, and she was warned that there would be many trying to get her by hook or by crook into their own team. Being extradimensional meant she could passively generate mana, would never run out of money and grow ever more powerful thus turning into an ideal adventurer. However after she got herself accepted as part of a team she got on with, she was captured and turned into a dungeon, however she refused to act as one. She was given an assistant called Emilia who was to also act as her advisor and who was a vampire. Alex was out for vengeance for what they had done to her team of friends, she would not follow her mission and comply and act as the terraform she was supposed to be. Her first priority was to build her dungeon, to protect her dungeon core, as once the word was out that a new dungeon had appeared in the wastelands, adventurers would flock to try to steal her core and she needed to remain intact if she was to save her team. However poor Alex had no clue how to go about being a dungeon in a world which seemed hellbent on killing her. This is an exciting first book, I loved the characters and the world building but found some of the nitty gritty details a bit too long winded.
106 reviews1 follower
May 13, 2024
I read the book almost 2 months ago and stopped halfway through the 2nd volume. After her ‘death’ (?), Alexandra Rousseau finds herself in a medieval fantasy world where she tries to survive (20% of the first book). That was my favorite part. However, I was much less pleased with the rest because I found Alexandra’s behavior hard to believe.

As the book’s summary suggests, she gets captured and sacrificed to become a dungeon. These initial 20% of the book serve to create an emotional bond between Alexandra and other adventurers… who will presumably appear in a later volume, maybe even in volume 20.

My issue arises because the very long-term objective clashes with immediate and ‘urgent’ needs. Additionally, Alexandra not only accepts her situation but also embraces it IMMEDIATELY and constantly has fun. Perhaps too much fun.

I didn’t like the experience and energy system, nor did I appreciate the protagonists’ attitudes. Even though Alexandra is the main character, she’s the least interesting of the bunch. Lastly, I reached my limit after yet another sexual reference that seems to punctuate chapters. After 10 references to relationships between women, we get the point. There is no need to talk about it again and again. Just like this comment, you get the point right? If only it were romance…
Someone needs to evacuate some sexual energy elsewhere.
51 reviews1 follower
June 1, 2023
The story sound good but the implementation is sloppy

I had high expectations for this book, but gave up somewhere 1/2 of the book.

Spoilers in the review:

The MC comes from the future where Earth has colonized and expanded. New technology, AI, implants, etc. She is whisked to a medieval magical planet. That's where things get sloppy.

She arrives in the middle of nowhere in her body but different clothes with armor, a sword, and conveniently money. Immediately, she finds civilization, speaks the language, recognizes a dwarf and realizes there are elves etc. and asks directions to the adventure guild. No mechanisms or explanations. How did she end up dressed there? How did she understand the language? How did she immediately realize this is a world of dwarfs and elves and magic?

Overall, things continue the same way. The author drops things and takes shortcuts without explanations. A 3* because of the potential.
990 reviews13 followers
September 18, 2023
Interesting mix of tech and magic

So the basic Is an engineer from the future Gets Killed reincarnated in a World of magic and technology. Then she is sacrificed to become a dungeon core. Main character Alexandra aside there is a lot of world building in this book. A lot of point of views are access which if you don't like POV changes it's probably a good book for you. There is a whole lot of politics and a whole lot of history to be Processed and absorbed in this book. And that's not even including the fact that there is Lots of magic and lots of magitek mixed in. So if you're a pure dungeon core lover this book does not dwell on that as much as I expect the later books do. However it is a good start for a series and a solid foundation And setting. Well I enjoyed the book so far I wouldn't consider it my Favorite in the genre yet. We'll have to read the second book To see how I feel about the series.
25 reviews
September 24, 2024
A good start, with a few small issues

The book has an interesting premise, and develops the world while leaving plenty of room for the story to grow.

The main character is developed mostly through flashbacks or discussions of her memories, but doesn't feel as though she grows much in the present. The supporting characters range from undeveloped to developed enough to seem like a potential deuteragonist.

My main critique is that the author uses a lot of pop culture references via the protagonist that don't really make sense for a space naval engineer from the 22nd century to use, as they are all references from the late 20th or early 21st century. It's not an insurmountable problem, but it does detract from the authenticity of the protagonist as a character to have her go from remembering a war crime to comparing something to D&D.

Overall I think it's an interesting story, and there's a decent chance I'll read the next volume.
Profile Image for Charles Daniel.
578 reviews6 followers
May 8, 2023
Die, Fall Into A Fallen World, Die Again, Fall Into Core Gem, And Then Things Get Interesting.

Alexandra's career, and life, in the IUS Space Navy ends with the explosion of a FTL engine. She was understandably surprised when she opened her eyes to find herself standing on a grassy hill on a world she didn't recognize. Her uniform and sidearm had been replaced with more civilian attire and a longsword. The discovery that magic existed and that her profession as an engineer made her a proficient mage was an even greater surprise — unfortunately her status as an "extradimensional" makes her a target for many power hungry people, organizations, and governments who would seek to control and use her for their ends. One organization succeeds in sacrificing her to make her into a Dungeon Core.

Which may be the greatest mistake they ever make.
Profile Image for Kevin.
1,710 reviews29 followers
December 6, 2023
I was enjoying this book until it reached the part that secrets were being shared.
If we have a secret, or you're trying to hide your face, and you are surrounded by people that can hear a pin drop in a crowded room. Won't you wait till you are in your bedroom to discuss these things?

Why is the trope still around that has people that are sharing an Inn room, discuss their secrets in a dinning area with strangers about? I'm sure this will come back around and be some big event cause.

Other than the multiple POVs of so many, after starting the book with one person, I enjoyed this.
Will pick up the sequel.

The book was very similar to Ancient Dreams. That book was going through my mind while reading.

3/5 Stars
908 reviews18 followers
April 18, 2024
This book actually made me angry. The MC, a space marine and engineer, is sent to a world with magic. MC has some pretty good advantages, joins a team, starts leveling up only to be kidnapped by the bad guys, killed and have her soul trapped in a dungeon core. So the MC goes from a space marine kickin' butt to a victim. If I want to read about victims I will read the news.

A secondary problem is the author claims the "bad guys" who kidnap and murder are actually good guys but doesn't give the reader enough information to know which is the case. Obviously this info will come out eventually but the bait and switch story telling method the author chose offended me to the point I could not continue reading. (I got a little more than a quarter of the way through the book and boy do I wish I would have spent that time better.)
Profile Image for Johnny.
2,153 reviews76 followers
October 15, 2023
Book one

When this book first came out I started reading it and ended up setting it aside. This was due to the MC's apparent lack of emotion.
Just recently I picked it back up to give it another shot. I'm glad I did.
The MC does have emotions and it is explained a little further in the book why she has none on arrival.
This is a good blend of technology and magic.
Lots of female characters. Some may be put off by reference to same sex, (female) relationships.
There is one minor plot hole that I mentioned on Goodreads. Otherwise the editing is top notch.
I did not find this series continued on Royalroad, but there are more books published in the series.

9/10 I think that the plot hole was made in order to give the reader information they might need.
631 reviews9 followers
February 27, 2025
Very interesting story from an engineers perspective

The MC, an engineer is isekaied from a spacefaring culture to a medieval magi-tech land. Soon afterwards she is kidnapped by a cult and transformed into a dungeon. Interestingly, dungeons are equivalent to a virtual reality engineers dream. Unfortunately, she is relatively low power, but learns fast. The dungeon location is in a wasteland, but a crossroads of 3-4 polities which is a receipe for a large upcoming conflict that wil end in war.

I really enjoyed the magic system explanations as they were concise but not overpowering. The mystic system was an integral part of the story along with the intrigue and cultivation progression.
Profile Image for Marcy Sorenson.
1,172 reviews38 followers
March 6, 2024
𝑫𝒖𝒏𝒈𝒆𝒐𝒏 𝑬𝒏𝒈𝒊𝒏𝒆𝒆𝒓 𝒃𝒚 𝑷𝒍𝒂𝒚𝒘𝒂𝒓𝒔 𝒂𝒌𝒂 𝑨𝒍𝒆𝒙 𝑺 𝑾𝒆𝒃𝒆𝒓

⭐️⭐️⭐️⭐️
4/5

This is the first book in 𝑻𝒉𝒆 𝑭𝒂𝒍𝒍𝒆𝒏 𝑾𝒐𝒓𝒍𝒅 𝒔𝒆𝒓𝒊𝒆𝒔.

I’m not a fan of the extremely long chapters, and wish it had been broken up more. There are only nine chapters total, which made parts feel really drawn out. I did like how the prologue was done though, I liked that we got all the background and world building basics out right then and there.

I love Alexandra, and how bada$$ of a character she is. I loved the military aspects of this book as well. Alyssa is another character I adore, she’s funny, and sarcastic. I look forward to seeing where this story is going.
58 reviews
February 7, 2025
Best new world of the year

The intro of the story looks good but actually left out information so I was surprised and excited as the story unfolded. I love books about apocalypse worlds and how they recover, and I also like lit RPG stories. I also prefer Sci-fi over fantasy. This story takes all my likes and preferences and serves them on a silver platter. Another twist was that all the main characters seem to be women and are attracted to other women. But they never discuss it in any detail. I'm left feeling like I want to know more. Maybe in the second book. I can't wait to get it.
Profile Image for Roarke.
50 reviews1 follower
February 16, 2025
Good overall, but weird romantic sub plots

Enjoyed the dungeon building, and the political stuff made sense and only went as deep as needed. No slowing things down for imaginary politician rants. But the dialogue and inner monologue of the flirtatious sort was weird. It was always teenage awkward when it was cringy, it was ALWAYS between two women, and the vibe had both “pure love” and “harem” undertones.

Don’t know the author, I think this was their first novel so they might just be learning as they go, but the romance/s*x anything, felt like a man doing his best to write a “realistic” lesbian relationship when all he really had to go on was a yuri fetish.
11 reviews
February 17, 2025
Overly wordy

The book is overly wordy with long dissertations on fantasy mechanics, character history, and fantasy technology tchnobabel. As an editor I would cut a third of the book's length due to this. World building is great but it needs to be organic to the story, not info dumped. The random but few references to current culture were made even more out of place by the author's insertions explaining why the character from over one hundred years in the future knows them. Also, for a dungeon core book there was very little dungeon core. By the second half of the book I was questioning who the main character was because she got so little attention.
Profile Image for Youssef.
247 reviews6 followers
November 26, 2024
1- False starts. Two of them before we get to the real story beginning. I didn't like that.

2-Telling. The author is authorsplaining all the time. Some of it it nice to know but it's mainly boring and irrelevant at that moment.

3-Exploitative. The cast of main characters is mostly women and end up in relationships with each other. What are the odds but Fine! Where it becomes blatantly exploitative is when random minor characters turn out to be an all female harem and we are exposed to their sex life and genitals flashing ways.
58 reviews2 followers
February 7, 2023
Good start

What if magic was really programming challenge, and mana the ultimate material? Apply the engineer's moto:If it's broke, fix it; If not, improve it. Nice addition to this line of dungeon core world building lit. Definitely helps if earlier books from other authors have been read. Well edited, easy to read, good character development, enjoy seeing motivations drive behavior, and all from a young author.
Profile Image for Erica Hernandez.
261 reviews5 followers
July 3, 2023
W book

It's pretty good book I enjoyed a book I enjoy Dungeon core literature and have not read some in a while I approve This book was pretty cool isn't quite as dunge and core e But it also doesn't put as many weird restrictions on dungeon chores that some books do Like there's no cap to the amount of resources Or mobs the dungeon can't create And there's no cap to the Area of influence. Mana is only issue. It's cool
Profile Image for Richard.
231 reviews
December 7, 2022
Interesting first book, although a bit slow for my taste. While the MC is sacrificed, it's not clear why though but I suspect this is justd to make it more interesting and to add a bit of mystery to the book.

Another thing that doesn't help is the story from different, although interesting, persepectives. I have hopes for the next itteration of this series.
319 reviews4 followers
January 1, 2023
Too many explanations

Way too many explanations ans parentheses in the middle of dialogue. The book seems to be more of a begining and introduction to the series, but it's overall pretty decent. What is absolutely annoying are the long explanations and figurative parentheses everywhere, breaking the flow of the story and the dialogue.
312 reviews4 followers
February 28, 2023
A fun read

I was surprised by this book, I did not fully understand what awaited me. I like the characters and enjoyed the world. I don't usually enjoy books that jump around between different characters, but the way it is written was a joy for me.thanks for your hard work. I can't wait to see the next book
508 reviews4 followers
March 2, 2023
A truly unique combination of high tech and high magic. The only thing I've read remotely close would be Glynn Stewarts various "Mars" books. Interesting protagonist and its nice to have a dungeon with long range goals even while necessity focuses on the now. Most readers should find this book interesting regardless of their genre preference. Well done Mr. Weber.
932 reviews5 followers
July 25, 2024
I was bamboozled. Taken for a mug. This was not good. The writing made me want to tear my hair out.

What should have been a wonderful fantasy w an older female protagonist ended being so tedious I have a headache.

This book needs a good edit bc the info dumps in this were TOO DAMN MUCH. ugh I’m going to bed
92 reviews
June 16, 2025
Fun read. Started out pretty interesting, but then in the middle of the book the main character just changed all of a sudden. There is one chapter of the orginal Main character and then just three of a different one. The writing style is also pretty weird at some points. Instead of building full sentences (The author is just randomly inserting brackets with Info dumps.)
66 reviews2 followers
December 4, 2022
Excellent start

I love how many interweaving plot threads are occurring in this story. Isekai from military sci-fi to magical post apocalypse. Mysterious organizations and politics of many flavors. Dungeon building and magical experiments. More lesbians than I expected.
Displaying 1 - 30 of 48 reviews

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