The Black Mirror "Playtest" episode is one of the most heartbreaking ever, but its final kicker didn't originate in the mind of creator Charlie Brooker. Black Mirror is an anthology series that explores the dark possibilities of where technology is heading. However, though the show looks into the future with its storytelling, some of its inspiration comes from the real world. The "Playtest" Black Mirror ending is certainly devastating but the origins of where the story comes from are likely funnier than any viewers could have expected. Black Mirror season 6 dropped a new batch of episodes in the popular anthology story, but "Playtest" still stands out as one of the most emotionally impactful ones.

https://screenrant.com/black-mirror-playtest-ending-true-story-inspiration-explained/