I recently ran a game that focused on the Commonwealth, the tier three Conspiracy.

The player characters awoke, with their minds all foggy and confused, in a hidden Commonwealth city were kindred and mortals live out in the open, side by side. It was an exploration about gaslighting on a large scale, where the players characters didn't know if the city was the norm or their foggy memories of living hidden among mortals was something that really happened.

Somewhat inspired by that M Night Shyamalan film, The Village....