This has been around for a little while, but I’ve just now been reading through it.
It’s the story of 2 homeless sims in Sims 3. The writer set up a man and a girl (father and daughter) to live on an empty plot of land in the neighborhood. With just their personality traits programmed into the game, the posts on this blog catalog their interactions with one another and the surrounding community.
Creative writing angles like this can get me stoked to try any game. I remember that guy on Twitter posting in the first-person about his experiences in the Wasteland in Fallout 3. Every tweet I read made me want to go play it. Also similar was the Living in Oblivion blog, where a guy used certain mods and play styles to try to survive as an NPC in Cyrodiil.