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DEFCON ONE PUBLISHING

Cobalt City

Books set in the Cobalt City universe are published by both Nathan Crowder and DefCon One Publishing. For your convenience, we’ve collected them all here.

Published by DefCon One Publishing

Femmes Fatale

Book Cover for Femmes Fatale
Femmes Fatale
Bad Intentions, a Cobalt City Universe Story. Erik Scott de Bie. Amanda Cherry.
Bad Intentions

Kensei Series

Book Cover for Kensei
Kensei
Kensei 2 - The Love of Danger
The Love of Danger
Cover for Kensei Tales: Offensive Driving
Kensei Tales: Offensive Driving
Cover for Kensei Tales: It's the Great Yule Cat, Jamie Hattori
Kensei Tales: It's the Great Yule Cat, Jamie Hattori
Cover for Kensei Tales: Live and In Concert
Kensei Tales: Live and In Concert
Cover for Kensei Tales: Unorthodoxy
Kensei Tales: Unorthodoxy

Mad World Cycle

Warlock Rising, Nathan Crowder, The Mad World Cycle, A Cobalt City Universe Story.
Warlock Rising
The Carcosa View, Nathan Crowder, The Mad World Cycle, A Cobalt City Universe Story.
The Carcosa View
The Mad World Cycle: Throne of Heaven, Nathan Crowder.
Throne of Heaven
The Mad World Cycle. Vote for Stardust. Nathan Crowder.
Vote for Stardust
The Complete Mad World Cycle
The Complete Mad World Cycle

Ruby Killingsworth

Book Cover: Rites & Desires
Rites & Desires
Illustration of a red-headed woman in front of a cityscape with stylized clocks behind her. At the top it has green eyes with the words "Time & Again". At the bottom it says "Amanda Cherry" and "A Cobalt City Universe Story".
Time & Again
Afoul & Affairs, Amanda Cherry.
Afoul & Affairs

Other Cobalt City

Cover for The Devil, You Say
The Devil, You Say
Cover for Snowflake War Journal
Snowflake War Journal
Sparx and Arrows
Sparx and Arrows
Cover art for Ride Like the Devil
Ride Like the Devil
Cover art for Cobalt City: Ties That Bind
Cobalt City: Ties that Bind
Cover art for Eye for an Eye
Eye for an Eye
Book Cover: Coast to Coast Stars
Coast to Coast Stars
Sure Shot in Las Capas - The Case of the Absent Star
Sure Shot in Las Capas - The Case of the Absent Star
Cover art for Cobalt City Dragonstorm.
Cobalt City Dragonstorm
Avatar of Freya.
Avatar of Freya
We are the Champions, A Cobalt City Universe Story, Erik Scott de Bie
We Are the Champions
Brother's Keeper, Dawn Vogel.
Brother's Keeper
Wrecker of Engines – Tales of Cobalt City’s Adventurers Club, Rosemary Jones.
Wrecker of Engines - Tales of Cobalt City's Adventurers Club

Published by Nathan Crowder

Cobalt City Christmas

Book Cover: Cobalt City Christmas
Cobalt City Christmas
Cobalt City Christmas Christmas Harder
Cobalt City Christmas: Christmas Harder

De La Vega Mysteries

Greetings from Buena Rosa by Nathan Crowder
Greetings From Buena Rosa
Cover art for Ride Like the Devil
Ride Like the Devil

The Protectorate Trilogy

Chanson Noir by Nathan Crowder
Chanson Noir
Cobalt City Blues by Nathan Crowder
Cobalt City Blues

Other Cobalt City

Cobalt City Timeslip
Cobalt City Timeslip
Cobalt City Dark Carnival
Cobalt City Dark Carnival
Cobalt City Los Muertos by Nathan Crowder
Cobalt City: Los Muertos
Cobalt City Christmas Christmas Harder
Cobalt City Christmas: Christmas Harder
Cover art for Cobalt City: Ties That Bind
Cobalt City: Ties that Bind
Cobalt City: Resistance by Nathan Crowder
Cobalt City: Resistance
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News

  • February 2026 Recap!

    By the numbers: Stories out at the beginning of the month: 33 Acceptances received: 2 Rejections received: 14 Stories withdrawn: 0 Resubmissions: 23 New Submissions: 0 Stories out at the end of the month: 40 February turned out pretty good on the resubmissions front, as I managed to send out more pieces than I received

  • Fun for Friday: March 2026 Writing Prompts!

    It’s almost March, so it’s time for the March 2026 writing prompts! This month, we’re starting with a throwback or two. Column 1 (and the image) is from my March 2018 writing prompts, and column 2 is from my March 2019 writing prompts. I figure those are plenty old to bring them back. (And we

  • Review of The Iron Below Remembers by Sharang Biswas

    The Iron Below Remembers by Sharang Biswas (Neon Hemlock, 2025) is a charming novella that mashes up academia and superheroes with a largely LGBTQ+ cast of characters. Professor Laxman Yadav, who specializes in art history and archaeology, is brought in to examine a recently unearthed artifact, a rare example of a fully intact technology from

  • Fun for Friday: DCO Instagram Prompts Are Back!

    I’m back with prompts from the DefCon One Instagram account! These are from late September and through October, so some of them have a bit of a fall theme. Write a piece about someone using a fork as a rake … or vice versa? Write a piece featuring a new candy trend. Write a piece

  • This Book Has Ghosts in It Cover Reveal

    My next collection, filled with spooky stories and poetry, will be called This Book Has Ghosts in It, and it’s available for pre-order in ebook now! Ghosts of the modern era aren’t always those of the deceased. In this collection are ghosts of ideas, creatures of death, and creepy plants and places, in addition to the

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