The 600-page novel follows four generations of a lighthouse-keeping family.
Early reactions on social media have been overwhelmingly positive, with fans highlighting the soundtrack and a handful of memorable scenes.
Industry watchers say the success is another sign that audiences reward originality and strong word of mouth over big marketing budgets.
A follow-up has not been confirmed, but the creators hinted in interviews that there are more stories to tell in the same world.
Sample story created by OrbitDeck setup. Replace it with your own reporting.
