Description from Wikipedia:
Ready or Not is a 2019 American black comedy horror film directed by Matt Bettinelli-Olpin and Tyler Gillett from a screenplay by Guy Busick and R. Christopher Murphy. The film stars Samara Weaving as a newlywed who becomes hunted by her spouse's family as part of their wedding night ritual. Mark O'Brien portrays her husband, with Adam Brody, Henry Czerny, and Andie MacDowell as members of his family.