Disclosure: I was one of the playtester.
Chris wrote a fascinating setting for cosmic horror ttrpgs with a fresh approach to the mythos, as Romanian history and folklore isn’t much represented in role playing publications. The sourcebook aims towards game masters and gives a broad overview of Romania and its history and folklore. Additional new mythos entities, spells, and rules wait to be put on the table. From ancient times to today, you find hooks, important NPCs and fractions. One can either use the sourcebook for an ongoing campaign, having a one-shot in the Palace of Parliament during the communist era or creating a generation wide campaigning in Romania. My tip, the tunnels are always fascinating ;)