The episode, revealed to be titled "Promortyus" on April 14, 2020, was directed by Bryan Newton and written by Jeff Loveness. The episode was broadcast by Adult Swim on May 10, 2020. According to Nielsen Media Research, "Promortyus" was seen by 1.34 million household viewers in the United States and received a 0.74 rating among the 18–49 adult demographic. Jesse Schedeen of "IGN" awarded the episode with a 6 star rating out of 10 saying that the episode "is an amusing addition to Rick and Morty's fourth season, but certainly not one of this season's better episodes. Like so many installments of the series, the plot veers in some pretty wild and unexpected directions. However, the early momentum starts to fade after Rick and his grandson return to their killing grounds in search of Summer. "Promortyus" either needed a few extra plot twists or a good subplot to add more variety." Steve Greene of "IndieWire" gave it an "C+" rating, who felt that the episode in "borrowing a page from a handful of films in the long-running franchise (and a few outside of it), this is an episode that's mostly on sci-fi reference cruise control."