What can I say about Gone Home that hasn't already been said? The game launched in 2013 on PC and set new standards for environmental storytelling and progressive topics in gaming.
Gone Home, from The Fullbright Company, tells the story of Katie, a college student who returns from a summer abroad to her family's new home in Oregon, set in 1995. The family is still in the process of moving, so there's a lot boxes and disarray around the home, and her parents and sister are nowhere to be found. Once again it's hard to say much more without spoiling the game for anyone.
Gone Home, in a way, put "walking simulators" on the map. Even though the term is often used in a derogatory fashion, the sub-genre is alive and well, in large part thanks to the brilliance and success of Gone Home.