As slasher / home-invasion / crazy-as-hell horror goes, the Purge movies have brewed up a great formula to get audiences in seats.
Even though the story was more or less wrapped up at the end of The Purge: Election Year, we should probably get used to these movies, much like the Purge itself, happening about once a year.
The story has expanded exponentially installment to installment, starting with a small-scale slasher and ending up at the war for America’s political conscience it became in Election Year.
The Hollywood Reporter notes that the studio has set a release date of July 4, 2018, which is probably an extremely deliberate choice, given the timely release of the most recent installment.