There is a clear distinction between procedural vs walking simulators. The main difference lies in the level of restriction. As procedural games let you go wherever, walking simulators have a path laid out. Essentially, procedural games provide a universe for exploration while walking sims prioritize feelings of emotion.

In the beginning of Gone Home, the house is portrayed in a way that invokes the normal horror survival game. Players initially think that danger is behind them, but as the game goes on, it becomes clear that the true horror of the game is the family. This shift away from fear leads the player to play the game to understand the family.

I’ve never thought about the shifts from generic characters(king, wicked stepmother), to a more realistic character. I also agree that when the story is tied to a more historical event it can be more relatable and have a stronger emotional connection.