There’s a handful of “Playtest” Easter eggs in this episode referencing Saitogemu, the gaming company from that episode.
In the mean time, brush up on Easter eggs from the first three seasons below.
And as much as I love enjoying Black Mirror as an anthology show of separates narratives, the Easter eggs are just begging fans to tie them all together.
We also know “The National Anthem” takes place about a year before the present-day events of “The Waldo Moment.”