Historically, one of the main differences between developer Naughty Dog's two flagship series was stealth: the "Infected" (i.e. zombie)-filled world of The Last of Us required quiet and careful sneaking, while the pulp fiction swashbuckling action of Uncharted relied mainly on loud, flashy shootouts.
With Uncharted 4, however, those worlds have collided, and Nathan Drake now has some honest-to-goodness stealth abilities. The result is a set of levels that could be pulled straight out of a really great James Bond game. (Beware: some light spoilers ahead).