It didn't take long after the massive success of 20th Century Fox's R-rated adventure Deadpool for rumors to surface about future superhero movies aiming for an R rating. Just last week, it was confirmed that Wolverine 3 has begun shooting, and it will be R-rated. But many feel that another X-Men spinoff the studio is developing, X-Force, should get an R rating as well. As it turns out, producer Simon Kinberg feels just the same way, teasing in a recent interview that the studio would be open to an R-rated X-Force.

X-Force has been in development since 2013, when Kick-Ass 2 writer-director Jeff Wadlow came aboard to write the screenplay. While we haven't heard much on the development of this project since then, Deadpool's post-credit sequence teased that X-Force leader Cable will be introduced in the upcoming sequel Deadpool 2, with actors such as Stephen Lang (Avatar) and Dolph Lundgren (The Expendables) expressing their interest in the role. During an interview with Den of Geek, producer Simon Kinberg teased that X-Force should certainly be R-rated, if it ever gets made, but he doesn't think the flagship X-Men franchise should get the restrictive rating.

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"When there are films that want to be raunchier, want to be darker, want to be violent or R-rated, [Fox will] be open to it. And not every movie should be. I don't think that the main X-Men movies should be R-rated; I don't think they're R-rated stories. But if we were to make an X-Force movie, that probably should be R-rated. And what we're doing with the Wolverine movie... that wasn't impacted by Deadpool. We'd made the decision for Wolverine to be R-rated before Deadpool came out. But I think there's even more confidence about having made that decision now that you see that an R-rated Deadpool movie can do better than any X-Men movie's ever done."

Deadpool has taken in $362.5 million domestically and $762.3 million worldwide since its release in February, becoming the highest-grossing R-rated movie ever, although its $362.5 million domestic total is just short of The Passion of the Christ's R-rated domestic record of $370.7 million. Still, Deadpool proved that there is a huge audience out there who will pay to see R-rated superhero fare, although it remains to be seen how this will affect other superhero movies from Marvel and Warner Bros., if at all. The current blockbuster Batman v Superman: Dawn of Justice will be getting an R-rated extended cut on home video later this year, and there have been rumors it may get a theatrical release as well.

As for the X-Force movie, we still don't know for sure whether or not this project will move forward anytime soon, but Deadpool star Ryan Reynolds has teased that he wants to reprise his role as the Merc With the Mouth in that movie. Deadpool writers Rhett Reese and Paul Wernick have teased that Deadpool will in fact cross over into the X-Force movie, but that may not happen until after the release of Deadpool 2, which still doesn't have a confirmed release date at this time. We'll continue to keep you posted with all developments from the X-Force movie and the X-Men universe at large, so stay tuned.