I just started my first campaign of Ironsworn. Ironsworn is a tabletop roleplaying game. What makes it special is, that it has rules for solo-play. So it is lke playing out a personal movie or reading other people's diaries.

The setting takes place on the big fictional Island of Ironland - which resembles something like Iceland. How you detail the world is up to you. The ruleset gives you good advice on how to create a good fiction that works.

My fictional me is Elstan a warrior whose main job is to protect his village from intruders and wild beasts. He is a warrior like his father.
And he bears a dark secret: As a kid he has seen his father slaying the clan leader of the village in the woods. He can't remember the exact circumstances - he was 8 years old at the time - but there was afterwards a big fight in the village and up to date, Elstan has never told of the guilt which is on him, knowing the murder of the clan leader and effectively protecting his father from law enforcement; instead he always tried to be overly loyal to the actual clan leader to compensate for that.

The interesting part of solo play is to write everything down: actions, decisions, thoughts etc. Everything which makes a nice story.