Cities of Myth: Isle of Endless Fog (5e)
"This is a b eautifully bleak hex crawl around an island smothered in oppressive darkness and fermenting wickedness. The Sluagh and their foul fog and maddening miasma are inscrutable and unknowable¸ but you must investigate the Island; discover the secrets buried within and without. Collect the scraps of information and open your heart and help these people tearing each other apart and worse¸ or become dark and hard as flint; indulge the mercurial machinations of men lost to madness of the mists and consent to cruelty. Worse still¸ lose yourself completely in the blanketing fog of yore; stumble blankly into the eternal night of truly annihilating nihilism...
There is still faint hope that your investigation can illuminate the mist's mysteries¸ lifting Man to the light¸ but it's not for the fainthearted."
- Curse of Sebs