Ubisoft has said it hopes to "redefine piracy in entertainment" with Assassin's Creed 4.
"We're staying away from clichés," lead content manager Carsten Myhill told MCV. "Things like walking the plank, parrots on the shoulder and hooks for hands.
"We are giving pirates the HBO, reality treatment. And that allows us to redefine piracy in entertainment. No longer is it for kids."
Myhill added: "It's one thing having good naval combat, but combining that with good boarding and land-based gameplay in a seamless way, is hard to do."
Ubisoft has confirmed an Assassin's Creed 4 release date of October 29 in the US and November 1 in the UK.