The Ritual is a monster movie with psychological ambitions and seemingly a decent budget. The jötunn monster is actually quite good and so are the cyclic re-enactments of the early on liquor store trauma. Unfortunately the rest of the movie is as bland as the title and relies too much on exotism of the deep Swedish forests. Sadly even that component gets watered out and the endgame cultists seem to be some recycled wiccans from Scotland rather than pre-christians of northern Scandinavia.
Under 17 requires accompanying parent or adult guardian 21 or older. The parent/guardian is required to stay with the child under 17 through the entire movie, even if the parent gives the child/teenager permission to see the film alone. These films may contain strong profanity, graphic sexuality, nudity, strong violence, horror, gore, and strong drug use. A movie rated R for profanity often has more severe or frequent language than the PG-13 rating would permit. An R-rated movie may have more blood, gore, drug use, nudity, or graphic sexuality than a PG-13 movie would admit.