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A journey that was a lifetime in the making….

Milton Frederick never had the chance to live out his life as a professional gamer on Earth, mainly because he was abducted by aliens. Unfortunately, he wasn’t returned home after the typical probing associated with such things to tell an unbelievable story to his friends. Instead, he was summarily killed and his consciousness was inserted into a Station Core, a giant metal egg-shaped object that could use technology to create traps, Combat Units, and other defenses to protect not just himself but those he cared about.

Despite killing him and sticking his mind in what was essentially a giant computer, the aliens that went by the name “The Collective” weren’t actually a bad group of people. Ultimately, what they had done to Milton had been to save themselves from the incessant attacks of a different group of aliens called Heliothropes; sadly, he never made it to where he was supposed to end up. Rather, his Station Core ended up crash-landing on a foreign planet named Proctus, as far from The Collective as it was possible to get.

However, through many difficult scenarios and by adapting to his new form, Milton was eventually able to leave Proctus with some new friends and new ships he had built with the help of his versatile drones. Now bound for Collective space to fulfill a promise to his personal AI guide, ALANNA, Milton and his crew use their trans-dimensional drive to journey there through a strange dimension that cuts down on their travel time.

What they find waiting for them when they emerge is not what any of them were expecting.

Dimensional Dungeon Cores is a continuation of the Station Cores series, though it can be enjoyed without having read the previous books. This story contains LitRPG and GameLit mechanics, Dungeon Core elements including dungeon construction and defense, and optional stat tables in the form of footnotes. Contains no foul language and no harems or sexual content.

472 pages, Kindle Edition

First published October 2, 2021

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About the author

Jonathan Brooks

94 books524 followers
Librarian Note: There is more than one author in the Goodreads database with this name.

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5 stars
330 (59%)
4 stars
140 (25%)
3 stars
60 (10%)
2 stars
17 (3%)
1 star
12 (2%)
Displaying 1 - 30 of 45 reviews
Profile Image for SVETLANA.
435 reviews69 followers
November 18, 2024
You can read this series as a stand-alone one, but for better understanding, I recommend you first read the Station Cores and the Dungeon Crafting Series because Milton meets Sandra in this book.

I like both these characters very much and it is interesting to see how they, being from two completely different worlds, are working together to save the world.

Profile Image for Draim.
33 reviews4 followers
December 30, 2021
It would be really nice if somewhere was mentioned that this book contains interactions/spoilers for Crafters Dungeon series and since foreword talks about other semi-related books, it could have been the best place to do that and everything would be good (the element of surprice is not really worth it). Book summary/description on Amazon is also bare.
I am not yet finished with Crafters Dungeon and i really liked it (much more than this so far), and suddenly 3/4 into this book there are spoilers for series i supposed was not realted? Really not happy about that.
And since I'm not going to finish this, before Crafters that is, I'll leave review as I stopped reading, about 3/4 of the way, exacly at the first mention of name "Sandra".

Is this a kind of crossover book for multiple series Avangers style?
If so, list out the prerequisite books, please.

REVIEW ITSELF
Having stakes being high is good, the time skipping is also kind of refreshing (jumping over tidious and repetitive parts) and leaving out the whole "humble beginings" of the core is also good in some way.
Main character being a semi-idiot is a bit worse, enemies are extraordinary boring and most of the allies feel like thare is a lot of character development missing and they just pop out of nowhere and after a little while I did not even bother trying to remember their names.
Another minor thing that iritated me was reffering to every star as "solar system" instead of "star system", i might have not minded except the main character actually had a thought like "Sol is the name fo Earths star", meaning solar. Nevermind that, just a minor thing that just hammered in the back of my head all the time. Same can go for Heliotropes, but that is not that bad.

Two stars feels about right rating this, if i finish it somewhere in the future, might push it up to three if the ending is any good.
Profile Image for Gandalfus-The-Colorful.
162 reviews
June 28, 2026
I come directly from the Station Core series, which I found stupidly written, 2 stars, but necessary to slog through in order to read this series. I had hopes Jonathan got better after writing that series. It's been a couple of years after all. But sadly, no.
It starts stupid. Already. :(
You -NEED- an editor, Jonathan. Just someone who questions you. Someone who can stop you. xD

Dude, you are writing a sci-fi story and you don't even know that you don't freeze in space so fast? Vacuum is an insulator. It takes 10 to 26 hours to freeze a human body in full exposure in space. But you lose consciousness within ~20 seconds and die in ~2 minutes due to the loss of pressure/gas bubbles in your blood. But you wrote they freeze within seconds...

Why would he dismantle the colony on Mars? It is as if one of the old colonists once stumbled upon Curiosity and decided to take it apart to build a lawn mover out of it: That is an atrocity, destruction of a historical significant site, a crime to humanity! Like those assholes who carve their name next to 64,000 Years old cave drawings in Spain. (Maltravieso Cave) Grounds for execution, imo. /s xD (Those are ~4700 year old ruins after all!)
It's not like he has to process minerals he mines or something like that. He just has to throw the raw materials into an open hatch and is done with it! Why destroy part of the colony then? Just mine on one of Mars's moons!
But not only that, they are also evidence that humanity was attacked by the Heliothropes. All gone.

This is just another piece of proof that Milton went insane at some point. Just like all the anglicisms and gamer-phrases he used in front of the aliens in the Station Core series, thinking they would understand, even after probably being told 50 times they don't. - Or the author just doesn't care to think things through; Which is actually what is happening.

Omg, and after doing so, he doesn't have enough stuff to build two people their bodies?? (Now it's three) I thought he can transmute matter! Just transmute Mr. Pickertons underwear, from 123 Mars Street, into someones balls! You just dismantled a huge colony, is what I'm saying! It had domes full of soil and shit! (Both literally and figuratively) You just don't think things through!

And using 5000 year old information they dismantle their weapons and fly up to the Heliothropes for a talk or some Tea. They don't have a lick of evidence that they still think this way! Cultures aren't immutable! In fact they just came here after almost being destroyed by their ships in a freak accident of cosmic coincidence and Author-Wants-A-New-Start-Syndrome! The whole fleet is gone except Milton! And why didn't Alana warn them they'd get attacked if they have weapons on their ships? She forgot... more like the author just now came up with it.
... and that was chapter one or two only!

Why would a government official give them a transponder, an identifier for a ship that never before existed, with a probably non-standard naming scheme, and isn't in their database???!? Aaaah! It's like going to DMV without valid proof of identity and trying to register a car AND a new drivers license because you lost your old one, AND THEY JUST GIVE IT TO YOU without even any forms or whatever!
Imagine the consequences: "Oops, you lost it? That's fine! Here is your new social security number, your house, your yacht, your dog, your wife, your toilet, your bank account, your Coca-Cola, your gun ... Just go up to the old residents and shoot the home invader. But not your wife, silly! It's your right by law! Haha" (Stand-your-ground law or whatever, who cares.)

Oh, so you say Heliothropes have conquered the whole galaxy, but for some reason forgot the Proctologists planet? The one unprotected planet with all the technology they ever wanted on it? Which, btw, neither Milton nor Alana or anyone realizes is an extreme danger! Sure, dude.

Oh, so you say regular old and blue Heliothropes are stronger than magically enhanced immortal warriors from Procto, who can rip those also magically enhanced Bearrillas apart with their hands? Sure, dude.

Oh, so when they take Trinket The Mouse to the planet they flee to, nobody thinks to help her by boosting her strength with magic? She is too weak to even stand up! Sure, dude.

Oh, so you NEED to kill animals to get biological mass? Trees, plants, soil, bacteria etc. aren't "biological mass"? Didn't you know that, for example, 99% of the human body's mass is made off of these six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus, which are also all found in stones in abundance? But you need "biological mass" from fucking WHALES to make more bodies? Sure, dude.

Oh, and don't tell me they forgot the transponder that was attached to their ship ... please ... well, it's not like it could transpond over interstellar distances. Why would that be the case? Haha, that would be ridiculous! ... Oh, they found you? Weird how that happens sometimes.
But not because of the transponder? Because of a network of sensor satellites that communicate FTL over the galaxy and just detect any ship? But not once Milton reached a derelict space station and builds a nest inside for his egg? Why aren't they looking for them anymore? Why aren't they questioning why the ship hasn't turned up anywhere else, why there is no dimensional rift in that system that indicates they exited, why there is suddenly work done on the space station, why the last recorded position of that ship is identical with the space station, bla bla bla bla. Sure, dude.

Oh, so the dimensional drive rips the ship apart if used within the gravitational influence of a planet? Did you forget that gravitation reaches infinitely far with speed of light? Just because you're 100km over the surface of a planet doesn't mean you're not experiencing 96.8% of its surface value gravity. But the drive rips the ship apart if used - what? - within that region but not outside of it? They didn't have much time to fly away after all. And there are also no safeguards of any kind? Sure, dude.

...
How and why the fuck did you make it so that he builds a dungeon on a space station to protect them from invaders? Metal spikes in the ceiling!! That is just so fucking stupid!
He could've gone full Von Neumann probe and build billions of ships in millions of star systems in order to eradicate the Heliothrope. Scaling, dude! It grows exponentially and all you have to do is just build one of them. (Haven't you learned anything from the Bobs?) You could've make them build rockets with dimensional drives that appear inside the enemies ships, drones that FTL-around the galaxy to scout and disseminate seeds that grow into drones that scout, etc, until you find the big red galaxy boss that is their leader and just D-drive into his face with a super-nuke. That would take ... what? Maybe the same six month he takes to build his fucking egg nest?
But no! He has to build some fucking video game dungeon to kill them one-by-one with CEILING SPIKES AND LIZARDS! It is so stupid! I can't anymore!!!

It's as if there is a layer of abstraction over everything you write: A layer that reduces detail, accuracy and intelligence. "Stones", "metals" and "biological mass" and even "wood" are basically the elements of the universe. Gravity and time don't quite exist relatively. Whole species are reduced to one or two properties that never change: The collective are meek pacifists that kill, the Heliothropes are overpowered, apathetic warriors with god complexes. (None of them is in a resistance or has different political opinion or something like that.)
It's a testament to stupidly trying to make a story out of an immutable premise, without putting in the effort to think things through. It's unintelligent creativity. It is the result of a single "What if?" question and brutally squashed together story elements for padding - without oversight.

It's not even the end of chapter 17, and all I want to do is skip to the last book to see what the fuck he came up with so that I can be done with Jonathan. *Update: He came up with a literal deus-ex-machina. Great... really great... shakes head.
And in the end his delusions made him turn the entirety of existance into a video game. Nothing is real anymore and he is god of all...

Anyone who's thinking about reading this: Please try "We Are Legion (We Are Bob)" by Dennis E. Taylor instead. That is a good and intelligent series. Not some washed up amateur writing like this. Sure it's not "dungeon core", but you really don't want this. You want something that doesn't betray your intelligence. You're a nerd after all. To some degree at least.

Write what you know, they say.
Profile Image for David Campbell.
320 reviews4 followers
March 27, 2022
Updated my review down to 2 stars after reading 50% book 2.

In most dungeon core books, there's some sort of drama, or interesting event - usually because the "heros" attacking the dungeon have some quirk or humor or something that lets the author play off them and the core. Here? The enemy is completely stupid and the plot armor to set up a tower defense in space is quite strong...

Let me sum up every "attack" for the next two books.

Attack 1: 50 fodder, 5 elites showed up and walked in a straight line into the defenses. Things shot at them and they made it to room 3!
Attack 2: 100 fodder, 10 elites and 1 boss showed up and walked in a straight line in the defenses. Things shot at them and luckily they were stopped in the last room!

Plot armor happens!
Attack 3: 500 fodder, 50 elites and 5 bosses showed up and walked in a straight line into the defenses. They got to room 2 this time.

I finished this book because I was interested in the characters from their original series, but in reflection, they were already getting pretty OP by the end of those. Now this series tries to make them start over and as such, it really doesn't work and I can't Care enough about the characters to even skip the "fights" to see if I care about plot profession (sadly there also isn't much of that either)

Original review
I'm glad the author put the stats at the end of the book, but even then, it's gotta be hard to write a book about tower defense and make the building/design descriptions interesting to read.
320 reviews5 followers
October 29, 2021
Bad

The MC is an idiot with attention deficit disorder bumbling his way through the world. He is supposed to be a gamer but has none of the knowledge and instincts for it. Things that should take a couple of sentances take 3 or 4 pages if useless information. The book is not fun to read, it's annoying.
Profile Image for Charles Daniel.
598 reviews6 followers
January 19, 2022
Milton Goes Dimension Hopping.

Milton and ALLANA depart Proctus; only to discover that Proctus is not in the Dimension of their origin. Worse yet, when they drop out of the "travel dimension" into their home Dimension they discover that they do not have a record of the Proctans' Dimensional Signature and are thus unable to return there, or access the resources they have accumulated there. From that starting point things really devolve into quite desperate straits for the Station Core and his advisor.

This novel may be of interest to fans of the wider Fantasy genre and to those who enjoy playing RPGs.
10 reviews
October 1, 2026
Core Establishment is… okay. Brooks mixes sci‑fi elements with the usual dungeon‑core fantasy framework, and it creates a world that’s interesting in theory but never quite settles into something coherent. The blend isn’t bad, just a bit odd, and I never fully connected with it.

The progression is straightforward, the mechanics make sense, and the pacing moves well enough. Nothing wrong with it, but nothing that really grabbed me either. I finished it without effort, but I didn’t come away feeling invested in the series or curious about what happens next.

Decent for what it is. I’m probably not continuing.
Profile Image for Angie Watson.
41 reviews
October 8, 2021
Wow!

Another great great from Jonathan. The storyline welds previous elements together and introduces Milton to a potential love interest! It is best to have read the previous series already, otherwise it probably won't make sense. Not a problem for me, as I devour the books as soon as they are released! The story flows well, with sympathetic characters. I never give spoilers! My only problem is that I have to wait for the next book. Please write it quickly Jonathan! I highly recommend the book.
Profile Image for Johnny.
2,288 reviews87 followers
March 26, 2022
Book one

Mistakes: I know that I found one. It and any others will be listed on Goodreads.
The true reason for the lost star is that this series ties in with his crafter series. So you need to read it first before this series or you won’t understand the end of this book.

Plot: The Station Core finally gets his space station. Protecting the collective has just gotten a whole lot harder.

Characters: The tie-in with another of this authors series makes it a bit rough to grade this part for you. What if you don’t want to read the other series?

7/10
Profile Image for Casey Winters.
115 reviews10 followers
October 11, 2021
An actual masterpiece

Neatly ties together the author's half finished dungeon core stories, adding a twist that breathes actual genius unto the Author's work - completely re-imagining the books that I've been reading as a guilty pleasure for years.

With this single book the Author has turned his previously desperate writing from multiple King-esque litrpg series, to must-read, genre redefining material.
Profile Image for Shane Sport.
39 reviews
October 29, 2021
Plot armor is strong with this one

I’ve read the previous five books and while I found them entertaining they were a bit verbose when not necessary. The main character continues a series of mistakes already made in the first 5 books while continuing to survive somehow. I don’t want to continue reading to watch the character grow all over again in the same manner.
Profile Image for Charles Owens.
50 reviews
March 20, 2023
Core Establishment up the Ante !!!!

Jonathan Brooks has done it again and with a crossover to boot... the beginning of the Latest Station Cores series finds Milton and his crew running for their lives... across not only the galaxy but now new dimensions... Hold on, it's gonna be a bumpy ride !!!!!
Profile Image for Nick Rizzo.
452 reviews7 followers
February 24, 2024
I am so happy I read the crafting dungeon series before this! The cross over is fantastic!! I do really like the premise of this dual sequel series with Milton fighting a guerrilla warfare against the helio-whatever’s that conquered the galaxy. The mix of magic and technology is my favorite sub genre. Overall really looking forward to the rest of this series
22 reviews
October 7, 2021
Awesome read

That said, you aren’t going to understand a lot of the references without having read both the Crafter’s dungeon (Sandra’s) series and the Dungeon Station (Milton’s) series.
Profile Image for Victor Tempest.
168 reviews1 follower
October 8, 2021
Milton is back!!

This was a nice little fun read. I had thought that the author was done with this series. I am glad to see that I was wrong. The station core series are some of the best Dungeon core books out. Would definitely recommend.
301 reviews2 followers
October 14, 2021
hahahahaha and so it begins!

Love these series and now they are all coming together like they were hinted at the end of the prior ones. Can’t wait to see what the 2 cores cook up together now.
112 reviews2 followers
October 16, 2021
So happy this exists

This is an amazing book that brings two different series together. I'm not ashamed to say the ending gave me literal tears of joy from me. I love this book and can't wait to see if\when the author brings his other series into this one.
3 reviews
October 19, 2021
Great to see more Milton, love where this is going.

If you're a fan of Jonathan Brooks previous dungeon core book, your gonna love this. I recommend reading Station Core and Crafters Dungeon series first, probably Hapless Fairy too.
Profile Image for William.
130 reviews2 followers
October 24, 2021
Loved It, Really Enjoyed The References/Different Tie In’s

Great continuation/expansion of the Station Core series. This continuation into a Dimensional Dungeon Cores series is really fun and entertaining. Can’t wait to see where the whole gang goes next.
Profile Image for Elaina Myers.
386 reviews2 followers
November 5, 2021
Great story and an interesting joining of protagonists!

This is an excellent follow on series from the Station Core series, as Milton has now made it back to his original dimension.

Even better though is that he eventually meets another core from another series! I am so very happy and excited about their meeting and what that could mean for the future for both of them, their people and their dimensions.

Definitely looking forward to the next book in this series. :)
Profile Image for Erin Paxinos.
38 reviews1 follower
November 7, 2021
Squeeeeeee

Not to give anything away, but if you have read some of the authors other books there is a huge squeeeeeee moment about half way through this book. The only sad moment was finishing and realising the next book wasn't out yet!
444 reviews1 follower
November 12, 2021
Good book

Very good , the story was very good and I. Looking forward to seeing were the relationship with the dungeon goes . Definitely looking forward to reading more from the author and the series 😀
Profile Image for Zerdath.
94 reviews
November 20, 2021
Great continuation of a fun story

While I think this book can stand on it's own, you will greatly benefit from reading some of the other series he's written, like Station Core and Dungeon Fairy.
140 reviews
Read
December 9, 2021
Haven't read all previous books so when said don't need read them for this series was thinking Great I'll give it a look. But then found it very hard to follow especially at beginning as was missing who is who and what is what and just hard to get into so found frustrating.
78 reviews2 followers
December 25, 2021
amusing new series with crazy odds stacked against them.

I’m enjoying the return of Milton and the gang. A crazy series of events. I can’t wait to see where he goes next. I had to pause my reading and dive into the Crafting Dungeon series. Which I also enjoyed.
Profile Image for Aaron Eichler.
933 reviews
June 8, 2022
Now I understand

I was one of the Beta readers for book two. Now I wish I had finished this book first. I really enjoyed it. The bring of Crafter’s and Station Core together. Now I have to listen/read to all those books, I have them, but just have not gotten to them yet.
8 reviews
October 4, 2021
Zoom we have awesome

This book is amazing. Johnathan Brooks had given us the reason to reach for the heavens. Buck Rogers eat your heart out we have Milton! If you wish for an even more immersive experience I suggest reading the Station Core and Dungeon Fairy series as-well by Mr.Brooks. It’s worth the read or listen!
Profile Image for unknown.
13 reviews
October 11, 2021
Marvel meets dungeon cores

The book is amazing. Something I’ve hoped to see forever and it stood up to my exspectations a thousand ton. Can’t wait to see who he meets next.
2,543 reviews8 followers
October 13, 2021
Very good read

I enjoyed reading this book very much and I recommend this book to anyone who like LitRPG and dungeon core type of books.
17 reviews
November 6, 2021
I recommend this book

I have read all of Mr. Brooks series and see the crossover points he has set up in at least three of them. I look forward to the Avengers, dungeon core style.
Displaying 1 - 30 of 45 reviews