A pilot episode of the series "Z Nation" has been released, with some outlets reviewing the episode itself, while others are comparing it to other shows in the zombie genre, such as "The Walking Dead" and a prequel series called "Black Summer". The reviews of "Z Nation" and "Black Summer" are mixed, with some finding "Black Summer" to be dull. The context and relationship between "Z Nation", "Black Summer", and other mentioned shows are not entirely clear.