This is a game kind of like the stories Ethan Frome or the Yellow Wallpaper, where you have a kind of growing sick feeling in your gut, not from gore or sex or anything like that, but from a disturbing psychological predicament.
This game is set in medieval times, and deals with faeries and the fey. Or does it? It's hard to tell. You are outside gathering eggshells, and soon you discover what purpose they are for.
This game has stuck with me for a very long time. It creeped me out. I don't want to give away too much, so suffice to say that you can make strong moral choices.