Season 7 brought Black Mirror back to the storytelling that has always made it so compelling, telling a suite of sci-fi stories that run the gamut from bleak to heartwarming to melancholy. But while its individual tales are diverse,

Have you checked on your Nintendogs lately? They might be plotting world domination.

Much of the tech that makes up the seventh season of “Black Mirror” boils down to a small device, no larger than a marble, being placed on the side of a character’s head and transporting them to a hyper-realistic, simulated landscape.