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.

The creator-writer of the Netflix dystopian series takes a closer look at the new episodes, explaining why he wanted to revisit "USS Callister" and how he has ideas for more sequels.