As far as story, Horizon zero down develops into such an interesting and mysterious piece of fiction. Although the game is so heavily diluted with too much dialogue, there is a good amount of action found in between when fighting the machines.
Being an open world game that invites you to explore the world on your own may be a slight overstatement. The map is full to the brim with fast travel points and markers for everything, it's as if the devs have no faith in you discovering anything on your own at all.
Overall though, Horizon zero dawn is worthy of a playthrough as it is such an inspiring and interesting piece of fiction