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Dungeon: A place full of monsters, traps, treasure, and death. Those are the Great Dungeons, with unplumbed depths below the roots of the mountains.

That's not for me.

Dungeon: A place of rape, torture, and death, to control and corral enemies and slaves. These are the Red Cores, from which the mage-kings draw their power.

That's also not for me.

I don't like monsters. I don't want adventurers. I want to stay well away from enemies and slaves.

Fortunately, there are alternatives...

(Includes explicit and consensual sexual content. Chapters containing such will be marked.)

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Word Count (17)
3rd Anniversary
Top List #2
Premium Member
Table of Contents
250 Chapters
Chapter Name Release Date
Day 2 ago
Day 3 ago
Day 4 ago
Day 5 ago
Day 12 ago
Day 20 (Explicit) ago
Day 21 ago
Day 25 ago
Day 42 ago
Day 55 (Explicit) ago
Day 56 ago
Day 56 - Shayma ago
Day 59 ago
Day 61 - Shayma ago
Day 70 ago
Day 71 ago
Day 72 ago
Day 73 - Ansae ago
Day 75 ago
Day 76 - Shayma ago
Day 76 ago
Day 77 - Shayma (Explicit) ago
Day 77 ago
Day 78 - Shayma ago
Day 79 - Blue ago
Day 79 - Iniri ago
Day 79 - Ansae ago
Day 80 - Blue ago
Day 85 - Shayma ago
Day 85 - Blue ago
Day 90 - Shayma (Explicit) ago
Day 91 - Blue ago
Day 91 - Taelah ago
Day 94 - Blue ago
Day 94 - Dyen ago
Day 95 - Blue ago
Day 97 - Blue ago
Day 98 - Annit ago
Interlude - Ansae Contemplates ago
Day 99 - Shayma ago
Day 99 - Blue (Explicit) ago
Day 99 - Ansae ago
Day 100 - Annit ago
Day 100 - Blue ago
Day 100 - Iniri ago
Day 107 - Blue ago
Day 107 - Keri ago
Day 107 - Iniri ago
Interlude - Taelah Catalogues Blue (and other stuff happens) ago
Day 108 - Blue ago
Day 108 - Ansae (Rashomon) ago
Day 108 - Annit ago
Day 109 - Blue ago
Day 109 - Iniri (Explicit) ago
Day 110 - Shayma ago
Day 111 - Blue ago
Day 112 - Annit ago
Day 113 - Blue ago
Day 114 - Blue ago
Day 114 - Shayma ago
Day 114 - Taelah ago
Day 115 - Blue ago
Day 115 - Ansae ago
Day 116 - Blue ago
Day 116 - Iniri ago
Day 117 - Blue ago
Day 117 - Harold ago
Day 117 - Blue, Part Two (Explicit) ago
Day 120 - Shayma ago
Day 121 - Blue ago
Day 121 - Keri ago
Day 122 - Blue ago
Day 122 - Ansae ago
Day 123 - Blue ago
Day 124 - Taelah ago
Day 128 - Shayma ago
Day 128 - Blue ago
Day 129 - Shayma (Part One) ago
Day 129 - Giorn ago
Day 129 - Shayma (Part Two) ago
Day 129 - Blue ago
Day 130 - Iniri ago
Day 130 - Blue ago
Day 131 - Iniri (Explicit) ago
Day 131 - Blue ago
Day 131 - Iniri ago
Day 131 - Annit ago
Day 132 - Blue ago
Day 133 - Blue ago
Day 134 - Sienne ago
Day 134 - Blue ago
Day 134 - Taelah ago
Day 134 - Iniri ago
Year 864, Day 138 - Tarnil ago
Day 134 - Iniri (Part Two) ago
Day 135 - Blue ago
End of Book One and Character AMA (not a chapter) ago
Day 136 – Iniri ago
Character AMA Answers ago
Start of Book 2 | Day 136 - Blue ago
Day 136 – Harus ago
Day 137 - Ansae ago
Day 137 – Blue ago
Day 137 – Keri ago
Day 138 - Blue ago
Day 138 - Taelah (Explicit) ago
Day 141 - Blue ago
Day 142 - One-Eye-Green ago
Day 142 - Blue ago
Day 143 - Iniri ago
Day 144 - Blue ago
Day 155 - Shayma ago
Day 156 - Blue ago
Day 161 - Iniri ago
Day 162 - Blue ago
Day 163 - Blue ago
Day 163 - Annit ago
Interlude - Andis Reports ago
Day 164 - Blue ago
Day 165 - Iniri ago
Day 165 - Blue ago
Day 167 - Shayma ago
Day 167 - Blue (Explicit) ago
Day 170 - Blue ago
Day 171 - Blue ago
Day 171 - Iniri ago
Day 171 - Shayma ago
Day 172 - The Hurricane ago
Day 173 - Blue (Part One) ago
Day 173 - Blue (Part Two) ago
Day 174 - Blue ago
Day 174 - Taelah ago
Day 174 - One-Eye-Green ago
Day 175 - Blue ago
Day 176 - Blue ago
Day 176 - Iniri ago
Day 177 - Ansae ago
Day 177 - Blue ago
Day 177 - Blue (Explicit) ago
Day 177 - Blue, Continued ago
Day 178 - Uilei-nktik ago
Day 179 - Piping Hot Pies ago
Day 180 - Blue ago
Day 183 - Blue ago
Day 183 - Wright ago
Day 184 - Keri ago
Day 184 - Piping Hot Pies ago
Day 184 - Taelah ago
Day 185 - Blue ago
Day 186 - Ansae ago
Day 187 - Blue ago
Day 187 - Shayma ago
Day 188 - Blue ago
Day 188 - Iniri ago
Day 189 - Sienne ago
Day 189 - Blue ago
Day 192 - Blue ago
Day 194 - One-Eye-Green ago
Day 196 - Blue ago
Day 199 - Blue ago
Day 202 - Blue ago
Day 204 - Iniri ago
Day 204 - Blue ago
Author's Notes - End of Book 2 / Character Q&A ago
Book 2/3 Intermission - Character Q&A ago
Book 3 | Chapter 1A: Day 204 – Flight-Alpha Tlulipechua ago
Chapter 1B: Day 204 – Blue ago
Chapter 2: Day 206 – Blue ago
Chapter 3A: Day 207 – Annit ago
Chapter 3B: Day 207 – Shayma ago
Chapter 4A: Day 207 – Girul Ell ago
Chapter 4B: Day 208 – Blue ago
Chapter 5A: Day 209 - Blue ago
Chapter 5B: Day 209 – Taelah ago
Chapter 6A: Day 210 – Blue ago
Chapter 6B: Day 210 – Blue (Explicit) ago
Chapter 7: Day 211 – Blue ago
Not a chapter - ebooks ago
Chapter 8: Day 215 – Blue ago
Chapter 9A: Day 218 - Taelah ago
Chapter 9B: Day 220 – Blue ago
Chapter 10: Day 222 – Blue ago
Chapter 11A: Day 226 – Shayma ago
Chapter 11B: Day 226 – Iniri ago
Chapter 12: Day 227 – Blue ago
Chapter 13A: Day 230 – Shayma ago
Chapter 13B: Day 232 – Blue ago
Chapter 14: Day 233 – Blue ago
Chapter 15A: Day 233 – Shayma ago
Chapter 15B: Day 233 – Blue ago
Chapter 15C: Day 233 – Port Anell ago
Chapter 16A: The Tree of Eschaton ago
Chapter 16B: Year 1, Day 234 – Shayma ago
Chapter 17: Year 1, Day 235 – Blue ago
Chapter 18A: Year 1, Day 235 ⁠- Blue ago
Chapter 18B: Year 1, Day 236 – Iniri ago
Chapter 18C: Year 1, Day 237 – Blue ago
Chapter 19: Year 1, Day 237 – Shayma ago
Chapter 20A: Year 1, Day 237 – One-Eye-Green ago
Chapter 20B: Year 1, Day 238 – Ynikrik Sapphire-Facet ago
Chapter 20C: Year 1, Day 238 – Blue ago
Chapter 21A: Year 1, Day 245 – Keri ago
Chapter 21B: Year 1, Day 248 – Flight-Alpha Tlulipechua ago
Chapter 21C: Year 1, Day 250 – Wright ago
Chapter 22: Year 1, Day 252 – Blue ago
Chapter 23: Year 1, Day 254 – Blue ago
Chapter 24A: Year 1, Day 257 – Taelah ago
Chapter 24B: Year 1, Day 258 – Shayma ago
Chapter 25A: Year 1, Day 259 - Blue ago
Chapter 25B: Year 1, Day 259 – Shayma ago
Chapter 26: Year 1, Day 259 – Shayma ago
Chapter 27: Year 1, Day 260 – Blue ago
Chapter 28: Year 1, Day 261 - Shayma ago
Chapter 29: Year 1, Day 264 – Tor Kot ago
Chapter 30: Year 1, Day 268 – Blue ago
Chapter 31A: Year 1, Day 272 – Nillaren Diamond-Star ago
Chapter 31B: Year 1, Day 275 – Cheya ago
Chapter 32A: Year 1, Day 290 – Blue ago
Chapter 32B: Year 1, Day 291 – Shayma ago
Chapter 33A: Year 1, Day 300 – Taelah ago
Chapter 33B: Year 2, Day 3 – Blue ago
Chapter 34A: Year 2 Day 15 – Blue ago
Chapter 34B: Year 2 Day 20 - Annit ago
Chapter 35: Year 2 Day 25 – Blue ago
Chapter 36A: Year 2 Day 35 ⁠— Blue ago
Chapter 36B: Year 2 Day 35 – Blue (Explicit) ago
Chapter 36C: Year 2 Day 35 – Ansae ago
Chapter 37: Year 2 Day 40 – Blue ago
Chapter 38: Year 2 Day 48 – Blue ago
Chapter 39: Year 2, Day 50 - Blue ago
Chapter 40: Year 2, Day 51 – Blue ago
Chapter 41A: Year 2, Day 52 – Shayma ago
Chapter 41B: Year 2, Day 52 – Ansae ago
Chapter 41C: Year 2, Day 52 – Blue ago
Chapter 42A: Year 2, Day 52 – Blue ago
Chapter 42B: Year 2, Day 52 – Ansae ago
Chapter 42C: Year 2, Day 52 – Shayma ago
Announcement - Paranoid Mage now on RR ago
Chapter 43A: Year 2, Day 53 – Blue ago
Chapter 43B: Year 2, Day 53 - Shayma ago
Chapter 43C: Year 2, Day 53 – Ansae ago
Chapter 43D: Year 2, Day 53 - Blue ago
Chapter 44A: Year 2, Day 53 – Annit ago
Chapter 44B: Year 2, Day 57 – Iniri ago
Chapter 44C: Year 2, Day 61 – Shayma ago
Chapter 44D: Year 2, Day 70 – Taelah ago
Epilogue: Two, Twenty, Two Hundred ago
Author Afterword ago
Book Three available on Amazon ago
Blue Core Book One Audiobook available! ago

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Consentacles + Dungeon = good

In a darker take on the Dungeon LitRPG genre, the author posits a setting where Dungeons are a lot more organic than usual; rather like giant hollow sedentary magical tentacle monsters. Another novel addition is the Depletion mechanic, that lets Dungeons steal lifeforce from nearby creatures, permanently weakening them in the process. Oh, and in keeping with the 'organic' theme, Dungeon monsters aren't created from thin air, but must be gestated in a host.
By implication, the typical Dungeon in the setting is a creeping engine of destruction, sluggishly ravaging the countryside around it for building material, lifeforce and unwilling hosts - while under the control of a ruthless Mage King that feeds it slaves in exchange for magical and military power. 

So far, so evil.

If the background is dark, the foreground is a bit lighter, though. 

This is the thrilling tale of the MC - presumably a reincarnee from Earth - growing to be the nicest Dungeon around, taking in refugees from the rest of the crapsack setting, and, presumably, starting to make some badly-needed changes to the world. 
This is also the thrilling tale of beautiful women finding themselves in situations where it makes sense to volunteer for a torrid time with twenty-or-so tentacles, something that just so happens to align nicely with their secret desires. (Or so I extrapolate.)

The story is told well, and is interesting and engaging - with the occasional explicit scene, clearly marked in the chapter title. As for the style, my only complaint is that occasionally setting and character descriptions are a bit too bare-bones. 

The grammar is excellent, averaging less than one typo per chapter, with only the kind of mild grammar issues that makes me go 'eh, not really worth commenting on'.

The characterization lags behind a bit, simply because not many characters have been introduced yet, and there hasn't been much time to develop them. I'm willing to take it on faith, though, that future chapters will catch up on that front. 

It's early days yet, and it remains to be seen whether the story will be an epic tale of a world in change, or just a framing device to marry the Dungeon construction to the smut scenes with a minimum of fuss - but 23 chapters in, I'm optimistic.


One of those stories where you March along devouring chapter after chapter. Then the most terrible of things happens.. The next chapter button is greyed out.


Never thought I'd like a tentacle dungeon story.

Well written story, the world is interesting, and incredibly, the tentacle porn didn't turn me off.

 Let me start by saying that this story had everything to end up in the garbage bin for me. Rapey tentacle dungeon could've ended up terribly, but it didn't. Thats what surprised me.It starts off pretty generic as your dungeon stories go, but it was well written and concise thus I kept reading. The first "explicit" chapter was the breaking point for either dropping or continuing it.

I wasn't disapointed, not being a huge fan of tentacles I was pleasently surprised by how "good" the explicit chapters were. Specially because mr.author took the "willing shared pleasure" instead of the "rapey vore" route (which was what made me drop Everybody loves large chests).

So far the story was to my liking, the background story is interesting, the Sex scenes were well written and not "sanity decreasing", and although the characters haven't been fleshed out yet (well except for fox girl, we know plenty about her "flesh"), the story is good and I'm interested to see whete the author will take it.


Fresh take on a dungeon story, well-written sex

Reviewed at: Day 176 - Blue

Good start so far for this dungeon story which does things in a different way.

I really like how the author has done the world of this story, its a unique take on the otherwise stale dungeon genre.

The world is a dark world with mage-kings ruling all through the power of their red dungeon cores, commiting dark acts in the pursuit of power . There are the great dungeons, with their incredible size, unclaimed by other powers, being a danger to all who delve in their depths. The denizen of this world suffer from the power of the dungeons and the mage-kings behind them, with them losing their strength due to the dungeons draining them and filling their depletion.

In this dark world the MC is reincarnated as a dungeon core, and through a series of events, he becomes a blue core, the implications of what he is are massive, and could bring a change to the world and all its denizens.

The author has gotten a good balance between plot, and explicit scenes, even if i personally wish there were more of such scenes in the story! The acts are quite well described with it being a different type of sexual scenes. This is not simply sex just because, it does matter to the overall story, with some of the important powers of the MC revolving around sex, i cant go too far into this, since that would be some spoilers, more interesting to find out while reading the story, and the scenes are worth it anyways!

I have to agree with another reviewer that the characters while being good so far, still have to be developed much more, but i guess that will be solved over time as the author writes more of the story.

Consistent grammar in this story, it wont be a problem at all for the majority of readers.

Im interested in just where this story can go, it has so much potentional because it does it own take on the dungeon genre. I can already recommend people to read it, not only for the dungeon setting, but also for the explicit scenes (with added tentacles, if you need any more reasons to read it)



Runs out of steam

Reviewed at: Day 163 - Blue

It's a fine dungeon core story with some (skippable and labled) erotic chapters sprinkled in. Unfortunately it runs out of steam after the Tor Kot battle and further chapters have become increasingly difficult to get through. Blue Core seems to have fallen into the same trap a lot of these dungeon core stories do which is that when they are focused and smaller scale they can be quite compelling, but as they grow larger and introduce more characters they become increasingly unfocused and lose their momentum.

The bones of this story are good. The harem characters are more diverse and interesting than usual. The antagonists are far better than usually found in dungeon core stories and the hints that the mage kings are actively fighting an existential threat make for what could be a very interesting dynamic later. If only this stuff wasn't burried underneath so much content that doesn't seem to be driving the story at all.

I think the story could be revitlized by liberal self editing. The main problem is just that there is too much inconsequential content in each chapter. Trim the fat, tighten up the plotting, and work to start building that momentum again.


Well-written story with unnecessary filler

Reviewed at: Day 202 - Blue

I would like to preface this by saying InadisablyCompelled is far more skilled than most Royal Road authors. This review is primarily going to be for the author, given the amount of positive feedback when the story first came out, which isn't entirely representative of its state today. These reviews, while certainly correct in a lot of ways, haven't acknowledged a single glaring issue I've had an issue with for quite a few chapters.

Let's start with the good parts of the story first.


Arguably the strongest part of this book. The characters are all believable and engaging. Despite there being multiple perspectives, the story doesn't fall into the trap of having a confusing and unnecessary amount of characters. The only issue is that the main character can be somewhat bland at times, but that's shored up by the presence of more interesting perspectives. Most other reviews have said the same things I have, so I'll be moving on.


Almost impeccable.


Although the story has laid a good foundation, its direction is inconclusive. Much of it is episodic. Each arc has a general goal, and then we move onto something entirely different. There are a few plot threads that have been put out there, but the pacing of the story means we won't get to them for another year. As far as I can see, the plot has no end goal, and that concerns me.


By the gods, I can't force myself to enjoy it anymore. The amount of filler kills me. When the author is writing plot-relevant content, and social interactions, it grips you from the start. I feel engaged and interested in the world or its characters. Yet, the author doesn't seem to know how to write things that happen between the relevant parts. There was a period of multiple chapters that was just the main character info-dumping pseudo-science concepts on the reader as he talked about the development of his dungeon. When someone can skip an entire chapter, and still have a complete understanding of what's going on, there's an issue. The general formula of the book is 10 chapters of interesting and engaging plot developments, and then we'll have to sit through another 10 chapters of all the main characters preparing for the next plot development. These chapters are often filled up with unnecessarily detailed descriptions and monologues about things that don't matter. At times it's felt like I'm going through a middle-school grade science lecture, except the knowledge is about how to use a magical anvil to create beta metals using mana leylines in the metaphysical currents of reality, without altering the basics of Akasha runesmithing. The author could use that entire made-up description in place of sections detailing the long and complicated crafting process, and in my opinion, it wouldn't change the story at all. The combat is much the same. Often unnecessarily descriptive and boring to read. Although the shorter, more concise fights are interesting, there's not a lot of incentive to read through the longer ones.


Once again, I love this book and its characters. It's an amazing story in almost all aspects, but the filler between plot developments is often unnecessarily long and bogs down the pacing of the story to the point where I can barely read it.

Oh, the sex scenes are also great.


blue core is complicated. what it does right it does really well but, when it does things wrong you're going to notice. if you can move past characters semi-regularly making choices you disagree with (whether that be from your own morals or just how you percieved a character) you'll do fine.

protagonists are protagonists. they are never actively malcious and if a choice is questionable it is questioned even if they do try to justify it. without spoiling there is something in there worthy of a war crime that does get treated with seriousness. maybe not quite as focused as I would like but, it's acknlowedged and approached approprietly.

speaking of focus. that's probably going to be the biggest issue you might have with this. there are a lot of plot threads. by the end I'd say too many. they are all addressed but, not necessarily when it would be best to do so. the plot and themes tend to spread out quite a bit. not enough to make the story flow terribly or anything but, you might forget about things fairly easily if you don't binge it or aren't all in on the story.

finally I'll say that this is pretty much a serial escalation story. you can think of progression like Dragon Ball Z. numbers get real big real quick. if you are looking for a slow dungeon story this isn't it. Blue Dungeon is as tagged very much action and adventure. the stakes only grow higher with each milestone.


Too much internal monologues

Reviewed at: Day 155 - Shayma

Another victim of the Telling Syndrome.

Way too much telling, not enough showing. There's also a TON of useless thoughts being thrown around, biggest offender being Blue wondering to itself what to do with this and that, only for it to not have any impact on the story whatsoever.

Still, I've learned how to skip over the filler paragraphs (they can easily take up more than half the chapters) and what I'm left with is an okay dungeon story. 

And for RR standards, 'okay' is pretty damn good for this site.


Good power-fantasy where main character is base-building with game like system, sex, magic-tech exploration, satisfying end, but quite a bit lose ends on the story's periphery. But still worth to read if you like this stuff.

Blue Core is trying to be too many things all at once and author is going in too many directions with no real plan how to wrap it all up. Too many "side stories" and side characters are touched, but not followed up on. In the story's defence it goes in one direction in the end and the main things are wrap up quite satisfactory. The ending didnt face palm into the dirt and actualy saved it. Actually one of the few good (but raw) gems in the dungeon novels (probably because the dungeon-building is turned into local-diety-management kinda things).

Main character is bland, but simpatic, and his companions are interesting. Side characters and villans are forgetable and slowly pushed aside to make space for our hero's way to allpowerfullesness. Standard stuff for power-fantasy. Nothing bad, but nothing special character-vise.

Over all the novel is something special, mostly because Dungeon novels are big garbage pile where this piece of raw quartz shines like a clear diamond. If someone ask me for good Dungeon novel I will point them here and who know's maybe I may go for a reread someday.


Besides that it's a fairly interesting dungeon core story, too early to tell where it'll end up but there's plenty in place already to lead to something good with a few wholly unique world mechanics already introduced. 
-edit- with the most recent chapters it is clear that a lot of thought has been put into things, I stand by my 5* rating and can't wait to see where things go.