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Doom System Survivor

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A new apocalyptic LitRPG perfect for fans of Primal Hunter, Dungeon Crawler Carl, and Dawn of the Void.

A glitching System. Rules changing daily. Time to fight back and survive.
When the Doom System appeared, it shattered reality overnight. People gained superhuman abilities—the only defense against a world that no longer made sense. But just as humanity began to adapt, the System changed the rules.

Now, survival isn’t just a struggle. It’s a competition.

For Hiro Johnson, navigating post-apocalyptic New York City isn’t just a grind, it’s a full-time nightmare. He’s armed with a katana, a werewolf form he didn’t ask for, a regenerative dog companion, and a time-traveling teddy bear that might also be a bomb. The rules change daily. So do the monsters. And the System?

The System is failing. It glitches, hallucinates, and makes up rules as it goes...

Now Hiro’s dodging Hunters, fighting sentient architecture, and trying to survive a multiverse AI bent on rewriting what’s left of humanity.

But as the world spirals deeper into chaos, one thing becomes the Doom System isn’t just insane, it’s evolving.

And if Hiro can’t find a way to fight back, there won’t be anything left to save.

Don’t miss the start of a new action-packed Apocalyptic LitRPG by bestselling author Harmon Cooper, where the odds of survival are constantly undermined by rules changing on the fly. Perfect for fans of Primal Hunter, System Apocalypse, and Defiance of the Fall!

502 pages, Kindle Edition

Published July 29, 2025

242 people are currently reading
62 people want to read

About the author

Harmon Cooper

139 books358 followers
Harmon Cooper is the author of over sixty fantasy works. His bestselling series include Pilgrim, War Priest, Cowboy Necromancer, and Tokens and Towers.

His series, The Feedback Loop, is one of the earlier GameLit works first published in 2015. An earphone award winner for the series Death's Mantle, Harmon won the LitRPG/GameLit Audiobook of the Year award for Sacred Cat Island, narrated by Legends and Lattes author Travis Baldree.

Harmon write progression fantasy, cultivation fantasy, and LitRPG/GameLit.

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5 stars
38 (40%)
4 stars
25 (26%)
3 stars
13 (13%)
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11 (11%)
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6 (6%)
Displaying 1 - 22 of 22 reviews
Profile Image for J.T..
Author 1 book4 followers
July 31, 2025
No Country for White Men

I'll start off with the pros here. The book isn't AI written drivel like we're having to become accustomed to. But it still isn't great. The story is essentially about a bouncy werewolf that can go back in time when he hugs a teddy bear. It's irreverent all over the place and not particularly as fun as it wants to be. Most of that can be attributed to the fact that there's very little character for any of the characters. Instead of giving them personalities with interesting motivations, flaws and goals, we get bombarded with a bunch of diversity described characteristics. Puerto Rican, black, lesbian, half Asian dual citizenship the descriptors used instead of making any one interesting. Weirdly, there are new white men in this book, at least up to the 50% Mark that aren't evil.
303 reviews8 followers
July 31, 2025
What a great start to a new LITRPG series for this author! Hiro is just your average human trying to survive on the post-apocalyptic streets of New York. But then the system forces him to play a game, he had been refusing to play.

The author did a great job creating so much tension with the fighting while Hiro was alone or in his encounters with other survivors. Hiro leans on words from his family about asking the right questions, and we see him figure out answers that I didn't see coming. The imagination and clever lines and humor balance the darkness of what the characters face so well. I am glad that the dog lived, I may have rioted. Thank the author for that. I am really interested to see where the author and the system take level two for the intensity and the characters.

"I’d say something like fortune favors the bold, but that’s what madmen tell themselves before they commit atrocities. It’s definitely bait, whatever this is.”
Profile Image for Kay.
1,721 reviews18 followers
July 29, 2025
What a cracking start to this new series from Mr Cooper, and a wonderful piece of storytelling, world building and imagination.

The reader is right in the action from the get-go - and it never stops! Things change every interim and you can't take all your accumulated skills, accessories or weapons into the next one. You never know what's going to happen next, particularly with the Doom System - it's evolving and it's bloody bonkers! ANYTHING can be a sentient enemy.

I love our hero, Hiro, and I adore Bianca. (You'll see why as you read it.) Absolutely absorbing reading!
Profile Image for Elizabeth Fowler.
163 reviews2 followers
August 1, 2025
While some of the issues with this book might be to my own personal taste, others are glaring grammatical errors or obvious mistakes the author should have caught while editing. 

There are several instances of things being written in bold that do not need to be. There are a few times where the author attributes quotes to one source which came from another. Additionally, it seems that the author doesn't even keep track of their own skills because the character doesn't list things they have or says they have used things they haven't.  
Profile Image for Scott.
1,480 reviews11 followers
July 29, 2025
Exciting & Novel Series

It's not everyday you come across something new in LitRPG but this new offering from Cooper is a great mesh of the old & new. The main character Hiro is an engaging person and the story progresses well with game (if unusual) mechanics as everyone competes for support and survival.
This is from Aethon so you get to enjoy the multi release which looks like that be something else I add to my collection.
270 reviews3 followers
August 6, 2025
I listened to this book and I think the narrator ruined it in part. He went for the over-the-top, overly excited style akin to DCC and Noobtown, but it just didn't work in this case. It was too much too often.

The story was decent. Fun mechanics. Absurd in all of the ways. Characters that could be fun. The descriptions were a bit lacking, but I did appreciate the faster pace. This book probably would have been too tedious if it was slowed down.
Profile Image for Loren Foster.
62 reviews18 followers
July 23, 2025
Hiro my Hero!

If LitRPG is now a Dime a Dozen, Harmon Cooper is the Baker!
It's a Got to Read 13!

The Doom System generates Twisted Threats and Tasty Tweeted Treats Galore!

If New York is the Big Apple then has Hiro Bitten off more than he can Chew?
Or is he merely contemplating all the Wriggling Half Eaten Worms?

Chomp On!
581 reviews4 followers
July 27, 2025
This book was absolutely amazing! I found it so difficult to put down. There wasn't a single lull, just action action action. I really like the main character, and most of the characters, really. There were a few really sad parts, but that's to be expected in an apocalypse. Super excited for the next book in this series!
Profile Image for Jp.
308 reviews5 followers
August 9, 2025
I wanted to give this a chance, but I guess it wasn't for me. I'm not sure if it was the voice of the narrator or the way that the System just seemed to be very antagonistic. But I gave it 20% of the book and then passed.
Others seem to like it, I may try it again, when I'm ready for something a little darker.
Profile Image for Matt.
27 reviews6 followers
August 2, 2025
Non_stop but ending here

The book is non stop. Like a cross between the Animaniacs and the Illuminati and tripping acid. It was a fun read but I don't think I'll read the next one.
2 reviews
August 7, 2025
Meh

Boring MC that seems to have no real skill set despite having lived in an apocalyptic setting for a year and he has to constantly be saved and the whole book seems to be more of a diversity thing
5 reviews
October 4, 2025
Doom System Survivor- Five stars! five stars, of course five stars

Funny, fast paced, unexpected. Fun read.

Incredible amount of pop culture and strange but true references. Thoughts and prayers for you people who haven’t read this book
43 reviews
April 24, 2025
What a crazy ride! This book was a perfect blend of exciting and touching, and I'm left wanting more!
Profile Image for Tiffany Taylor whiting.
93 reviews2 followers
July 29, 2025
loved it

Harmon wrote another great book. I loved the ghostbuster references in this one and can’t wait to read the sequel
2,455 reviews17 followers
July 31, 2025
I found Hiro a bit boring and the system annoying. Can’t win them all I suppose.
751 reviews5 followers
August 1, 2025
Great book

The system is crazy. AI experiencing hallucinations. This is the book for you. Even an interesting start of the system with a reset.
778 reviews9 followers
August 4, 2025
Very good book

This is a fine gamelit adventure novel. It is well written and. I especially like Bianca. I anxiously await the sequel.
2,179 reviews7 followers
August 22, 2025
Very good read

I enjoyed reading this book very much and I recommend this book to anyone who likes LitRPG and progression type of books with lots of action.
14 reviews
August 26, 2025
Really really good!

Compares favorably to Dungeon Crawler Carl. Interesting setting & characters, dark, crazy AI. Can’t wait for the next book in the series!
32 reviews2 followers
November 17, 2025
Awesome book

This book was imaginative and complexe with it system storyline but awesome to read lol can't wait to see where the writer goes from here.
Profile Image for Aaron Eichler.
748 reviews
August 13, 2025
Don't smite me

This was an amazing story about some humans needing to survive at all cost, but the better part was a few banded together to survive and live. I loved Hiro's journey even though it was hard, and he lost several friends he and the few who made it through are stronger than ever. I loved the battle of the doors because they were speaking in Latin, and I just had to know what they were saying. I am ready for the next Interim only if it is from this side of the screen.
Displaying 1 - 22 of 22 reviews

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