I had an idea before but I have my actual idea now: Every Room A Mouth.
EVERY ROOM A MOUTH invites the player to step into the shoes of a house—watchful, rotten, and full of hate—that will never be a home, as it seethes and growls and feeds on mortal flesh and tragedy. You’ll feel the centuries bear down upon you as horror festers in your heart, walls crumbling and roof sagging as you wait for your next victim.
It’s all about haunted houses, baybee!