The best R-rated horror movies make the most of their rating to deliver scary and intense scenes, from modern films like Smile to classics like Child's Play. R-rated films often have difficulty selling due to the barrier to entry, but the horror genre is a perfect match for the freedom of being able to tap into audiences' deepest fears with unfettered gore. Combine that with the fact that horror movies have one of the most stable built-in audiences of any movie genre, and it's no wonder they excel with the rating.
