The Dark Souls series is incredibly popular amongst gamers, but it will take a lot of time if someone wants to experience all three games.
How long is Dark Souls II?
Dark Souls 3 review
How long is Dark Souls II: Crown of the Ivory King?
Dark Souls 3
Game Progress Route
How long is Dark Souls III: Ashes of Ariandel?
How Long Does it Take to Beat Dark Souls 3? - VGKAMI
How Long It Takes To Beat Every Soulsborne Game Back To Back
How Long To Beat Dark Souls
Demon's Souls