In 1968, the Motion Picture Association of America (MPAA) instituted the first iteration of our modern-day movie ratings system: G, PG, R, and X. But because the organization didn’t copyright the X rating, it was soon co-opted by the pornography industry to promote its adult films in theaters. This continued until 1990, when the MPAA finally decided to replace the X with NC-17: not for children under 17. Basically, it was a way of saying “This isn’t an ‘adult film,’ but it’s definitely for adults.”

With a smaller demographic of people interested in seeing (or even allowed to see) NC-17 films in theaters, they can’t exactly compete with Avengers: Endgame (2019) at the box office. But some still manage to do pretty well. Below are Box Office Mojo’s top 25 highest-grossing NC-17 movies ever released, based on domestic earnings.

A few entries, like Bernardo Bertolucci's Last Tango in Paris (1972), premiered years before the NC-17 rating existed, and were retroactively rated upon re-release. That film, starring Marlon Brando as a grief-stricken widower involved in an intense new romance in Paris, took the top spot with just over $36 million in revenue. It also earned Oscar nominations for both Brando and Bertolucci.

The runner-up is much more of a guilty pleasure than a critics’ darling. Showgirls (1995) nabbed an impressive six Razzie Awards, including Worst Picture, Worst Director for Paul Verhoeven, and Worst Actress for Elizabeth Berkley. Verhoeven actually showed up to accept the awards in person.

Other movies run the gamut from irreverent comedies—1997’s Orgazmo, for example, from the team behind South Park—to psychological dramas like David Cronenberg’s Crash (1996). The list even features a documentary all about the MPAA’s ratings system: This Film Is Not Yet Rated (2006).

Read on to find out what other movies made the top 25.

  1. Last Tango in Paris (1972) // $36,144,000
  1. Showgirls (1995) // $20,350,754
  1. Henry & June (1990) // $11,567,449
  1. The Cook, the Thief, His Wife & Her Lover (1989) // $7,724,701
  1. Kids (1995) // $7,412,216
  1. Bad Education (2004) // $5,284,284
  1. Lust, Caution (2007) // $4,604,982
  1. Tie Me Up! Tie Me Down! (1989) // $4,087,361
  1. Shame (2011) // $3,909,002
  1. Crash (1996) // $2,664,812
  1. The Dreamers (2003) // $2,532,228
  1. The Evil Dead (1981) // $2,400,000
  1. Blue Is the Warmest Color (2013) // $2,199,787
  1. Bad Lieutenant (1992) // $2,000,022
  1. Wide Sargasso Sea (1993) // $1,614,784
  1. A Dirty Shame (2004) // $1,339,668
  1. Whore (1991) // $1,008,404
  1. Young Adam (2003) // $767,373
  1. Inside Deep Throat (2005) // $691,880
  1. Dice Rules (1991) // $637,327
  1. Orgazmo (1997) // $602,302
  1. Broken English (1997) // $541,377
  1. Bent (1997) // $496,059
  1. This Film Is Not Yet Rated (2006) // $306,845
  1. Matador (1986) // $279,394