In a Twitter thread, the company announced that it will be releasing such lists on a weekly basis from here on out. To compile them, “we look at the most-watched individual season of a show, film or special (regardless of when it launched). ‘Watched’ means members finished at least 70% of one episode.”
“It’s a test as we want to make sure this information is useful for you,” Netflix added. “So we may tweak it in the weeks ahead. eg. we’re not including kids right now.