Taking inspiration from http://persinetteinthetower.tumblr.com/post/113953...

Let's look at fairy-tales from before the brothers Grimm sanitized and modified them. Exploring the castle as one of the servants, uncovering the original story - although you'd probably have to sanitize those too. I guess this would work similarly to Gone Home, and could cover other fairy-tales as well. The (one of the, depends which version) author of Bluebeard left a moral condemning the curiosity of women. Lets expand on that - play as one of Bluebeard's wives, see how long you survive before your serial-killer husband gets bored. Or, discover the other bodies and hope you can run fast enough.

Sourced from https://en.wikipedia.org/wiki/Bluebeard, 19th century illustration by Gustave Doré