This book review is about 'Dungeon Crawler Carl' by Matt Dinniman, the first book in the series. The book is a LitRPG genre, following a classic DnD scenario with a former marine technician, Carl, as the protagonist. The book is mostly about the game mechanics, monsters, NPCs, locations, etc. with some subtle parallels to 'Hitchhiker's Guide to the Galaxy'. The book is less inventive and less funny but still very good. The review provides a brief overview of the book's plot and characters.