Dark Souls 3 may be the continuation of a series, but you shouldn't be turned away if you haven't played the other games, as the stories are unrelated. Nor should you be turned away by this game's incredible difficulty, as, much like its predecessors, it is an incredibly frustrating game at times. For while it may be hard, it's still incredibly satisfying to eventually overcome the hurdles put in your path.
I started off with mentioning the two things which may make you, or someone you know, hesitant to play Dark Souls 3, because once you do sit down and play it, you'll realize it's one of the best action RPGs of this generation. It does everything the first two Dark Souls games did right, and just adds onto it.
Dark Souls 3 is available on PC, PS4, and Xbox One.