Boundless Dungeon of Sexual Misadventures

Publisher's blurb:

There is a whisper, told with a nervous laugh. A story recited at dinner parties and illegal raves, at dockside parties and glittering banquets. Tales passed between lesbian couples and trans polycules. You know friends of friends who have visited there. You've heard of people who have not returned, or came back much later, or returned transformed. Tall tales, perhaps...

This is a single-player card-based journaling and creative writing 'game'. (Game is in quotes, because even played most strictly, there is plenty of wriggle room.)