First-person walking sims have taken the environmental lessons, the same ideas of architectural structure as a form of storytelling, and diverted the focus from action to introversion. They leave the player alone in a world with their own thoughts.
First person walking games take away the violence from the similar first person shooter game and leave the player in a space where they are able to deeply understand the plot of the game. There are no outside focuses like survival, so it allows the player to deeply think and uncover the story of the game for themselves.