You are the High Priest of a small, isolated island village dedicated to preparing for the rise of a sleeping sea‑god. Every season you must root out heresy, maintain the Fervor of your people, and ultimately choose one of your own advisors as a sacrificial offering. With the free Sunken Sins expansion, you get a deeper investigation system, a longer campaign, a brand‑new purification tower mechanic, added events, art and animations, fresh personality traits (and even hints of madness), plus a dramatic cinematic ending to strive for.