CATTACOMBLitRPG Author
Demonic City Builder

A Base & Kingdom Building LitRPG · by Cattacomb

He filed 101 support tickets.
The System turned him into a demon.

Kairon is a system clerk that finally gets his own city charter. So he does what any good bureaucrat would. He reads the entire Terms of Service, identifies a loophole, and exploits it.

Read Book 1 on AmazonPre-order Book 2
The start of the hit litrpg series with over 350,000 views on Royal Road!
Demonic City Builder Book 1: The Fine Print, cover
Book 1
Demonic City Builder Book 2, cover
Book 2

Reader Reviews

Demonic City Builder is what happens when a rules lawyer gets turned into a demon and handed a city. Darkly hilarious, and the prose sings. If you ever wondered 'What if Sauron was actually reasonable?', this is for you.
Sivrehn · Royal Road
It literally feels like a day at my job but heaped on top of Heroes of Might and Magic.
Dave Ogles · Royal Road
Scratches a couple itches that aren't normally addressed in progression fantasy.
Garry Anderson · Royal Road

The Books

Demonic City Builder Book 1: The Fine Print, cover
Book 1

Book 1

Out now

The Fine Print

Unfortunately doing so ended up calling down a pillar of hellfire that roasts him, all his villagers, and everything else within a league alive.

Now he's a demon that's got ten confused imps, a tower with a giant floating eyeball, and a rudimentary system that raises buildings through rends in reality.

A MC that wins through competence, scheming, and middle management.

Anti-hero MC

Dual progression system: LitRPG city building & demonic power.

4X Elements: City rings, demonic rituals, spawning grounds, and buildings torn through from another plane.

Satisfying city progression & good business sense

No Hero. No harem. No saving the world. Instead, a ruthless clerk that neither the demonic plane nor the church saw coming.

Read Book 1 on AmazonBook 1 page
FormatsKindlePaperbackAudiobook

Published August 16, 2026 · 507 pages

Demonic City Builder Book 2, cover
Book 2

Book 2

Pre-order

Middle Management vs. The World.

Armed with finally understanding what his sigil does, Kairon begins preparations for war. As a true bureaucrat, he won't just use his sword, but the fine print and schemes to claw his way to victory.

New and far more powerful buildings lay the foundation for growth. Some might even say that his city is... evolving.

Join Kairon in the next leg of his adventure. One that's starting to get more and more attention from his enemies.

Tentative release date: October 18, 2026. Available now for pre-order.

Audiobook expected late November / early December.

Pre-order Book 2 on AmazonBook 2 page
FormatsKindlePaperbacksoonAudiobooksoon

Tropes Include

Anti-Hero LeadMonster EvolutionSystem ExploitsKingdom BuildingNon-Human MC

A base building litrpg perfect for fans of CivCEO, Life Reset, and Chrysalis!

Also on Royal Road

Demonic City Builder is on Royal Road too. Read it there and follow along with the story.

Read on Royal Road

From the Author

The inspiration for the systems behind Demonic City Builder came from pouring thousands of hours over the years into my favorite city builders and colony management games.

As for the characters and book itself... That's more my take on a genre that doesn't give nearly enough love to characters that use the fine print instead of swords to do their fighting. Well, most of it!

About the Author

Building a demonic city with the power of middle management!

When I'm not writing, I'm playing video games that require more thinking than clicking, entertaining my bengal cat that might as well be a dog, and helping small business owners achieve their dreams!