https://www.youtube.com/watch?v=DBzSEw3JmRE
This is an incredibly badass story on how open the sandbox experience is to the point it becomes a movie where you as a player have full agency with. Games that the likes of Uncharted and any other AAA title would spend millions on pre-defined set-pieces now given unlimited scope to how the player choose to engage with. *no spoilers*, but this is the kind of thing that is literally the direction Deus Ex and Thief have laid the groundwork on if they were given next-gen specs to work with. Many other reviews also attest to their own personal sandbox experience narrating their own stories:
NO QTEs.
NO SCRIPTED EVENTS.
PURE 100% PLAYER DRIVEN EMERGENCE.
Fucking boss! The true open-world experience that I've been waiting for all this time.