To be honest, I had forgot about this book until the release of Seiple's second book in the series was released. And I'm kicking myself for putting off reading this one for so long.
This is a great execution of dungeon core mixed with a futuristic setting. For the uninitiated, dungeon core books feature a POV of a 'dungeon' or a building that defends itself from attack. Now, reading a story from the perspective of a building is an interesting concept (if not weird) but it's something that can be a huge challenge to make engaging. Buildings don't have heads to nod, lungs to sigh, or eyes to blink so it's hard to relate to such a character. In this book, the dungeon POV (or rather the bunker) is the electric copy of a human brain, so we can have a virtual equivalent to a character to relate to. This not only helps the reader understand the bunker core, Wynne, but also is integral to the futuristic setting of the book.
The choice of a scifi setting is fairly unusual for the dungeon core genre, but it adds a lot of interest to the reading. Fantasy settings are the typical backdrop for dungeon core books and the common conceit for these stories is magic of one kind or another. Here, technology takes the place of magic and sets up the mechanisms through which Wynne interacts with his work. This choice, along with the post-apocalyptic setting, lends the story a tone different than its peers, which I found very interesting.
The various character side-stories add a lot to the setting and plot, while presenting interesting vignettes into the bleak far-future. Overall, the book reads fast and fun while still having enough interesting ideas to engage the reader to think about the setting. The characters are compelling and really elevate the story despite its short word count. Highly recommended.