This game is basically where people alternate between saying fortunately and unfortunately in a story. I’ll start the story with a sentence, and then people will add on, first with a unfortunately, then the next with an fortunately, etc, etc.
For example:
Me: Once upon a time Kaladin was walking in the woods.
Person 1: Unfortunately, he tripped and fell on the ground.
Person 2: Fortunately, when he was on the ground he found some buried spheres.
Person 3: Unfortunately, ...
You get the jist. So, I’ll start off with...
Once upon a time, Dalinar was fighting a chasmfiend.