The long-awaited fourth installment of the RAMBO franchise will be the goriest yet, filmmakers have promised. John Rambo producer John Thompson reveals he had to "raise the stakes" in the latest movie which stars action hero Sylvester Stallone, in a bid to compete with other "gory" movies, like Saw III. He tells Empire magazine, "We're up against films like Saw III, where people were being sick in the aisles, so we've raised the stakes too." Stallone adds, "If you thought other movies were extreme, John Rambo's gonna knock you for six."