This is another game that is made to be replayed. And the player can choose how many times they want to replay, or how much of the story they want to uncover. I tagged it "mystery-ish" because, while it's not a puzzle game with a mystery and clues in the traditional sense, the player uses the previous play-throughs to know how else they can interact with the setting and, therefore, uncover more back-story and characterization. You put a small amount of effort into the game, and receive an increasingly rich back-story and characterization.
It's a game that can function as an accessible introduction to IF but the beauty of the narrative is for anyone. I consider that I've "played" the game but I haven't yet reached a point where I feel I've "finished" the game. I'd consider it a short game though I haven't yet reached an "end" and I don't know if there is one.