The technological Singularity has arrived, and has decided the human race needs to be deleted. But has very kindly given us a week's notice to get our affairs in order first. You're a writer in a new town, deciding each day whether to knuckle down and write your final masterpiece, or go out and experience the sights, sounds and people of your neighbourhood as they come to terms with the approaching apocalypse. Essentially, this is two separate narratives that require you to go "all in" on one route to experience the stories to their conclusions. Trying to alternate between writing days and going out days simply yields two half-completed stories instead of one full one when your time runs out. Which mechanically fits with the central theme of Blackout: you can't do everything, there just isn't enough time. This is either intended as a broad life lesson: "life is more satisfactory when you can focus on what you know you can achieve rather than what society says you should achieve", or a darkly comic metaphor about writer's block and missing deadlines.