With the release date of "Uncharted 4: A Thief's End" locked in for March, Naughty Dog revealed that the upcoming game could potentially be the last for the story's protagonist, Nathan Drake.

Lead game designer Robert Cogburn reportedly said in an interview, which was reported by PlayStation Lifestyle how the upcoming game would be the last of the series for the main character, citing how hard it is to create this kind of games.

"This will be our fourth 'Uncharted' game," Cogburn said. "These games are hard to make. Particularly with a character like Nathan Drake in a world that's fairly grounded, it's a challenge to consider how much more we can expand the universe while adhering to those sorts of rules."

Furthermore, he revealed how they are at least planning to release an expansion for the game series in the future to at least continue with what the studio has started, as people wait for "Uncharted 4: A Thief's End."

"You struggle with having to answer the same questions over and over again in any franchise," he said. "This is gonna be the fourth time we start answering stuff like, 'How do we make hand-grabs visible? What do we do to scale the combat experience? What are the interesting puzzles we can be introducing in the moment-to-moment as the player's experiencing this narrative?' That's not to say the questions will be the same in games we make going forward, but as a studio we grow tired of answering those same types of questions in the same fiction. It's gonna be fun for us to really embark on new ideas and start fleshing those out [in a new series]."

With the graphics on "Uncharted 4: A Thief's End" impressing a lot of people as seen on Nathan Drake, Naughty Dog community strategist Arne Mayer revealed in an interview, which was reported by SKNR, how the graphics of the game came into play.

"There are far too many things to list," Meyer explained. "Not to mention many things we can't talk about right now, either. We saw a glimpse of what was possible with games on the PS4 when we developed The Last of Us Remastered and we were excited with what we could do when fully focused on developing a game from the ground up for the system."