I felt truly invested in Aloy's story as she goes on her mission of self-discovery in a post-apocalyptic future filled with strange civilizations and robotic creatures that have the forms of animals from Earth's history (including prehistoric history). I played the game with its expansion--The Frozen Wilds--which added several interesting substories to the larger epic.
This video game was one of few cases where a game's world becomes more and more believable as the game continues. Elements that I thought were plot holes ended up being deeper avenues of story in a world more complex than I had expected. Best of all, the game led me to reflect on our own world and my own life.
The game itself has some interesting mechanics, as well as some frustrations. However, despite its size and those few frustrations, I think I may play it again at some point in the future. I certainly would like to play earlier portions now that I know where they lead.