Fun game, delivering nice open-world exploration.
The world is well crafted. It's not too small nor too big. Here and there you solve a puzzle, find a more or less hidden new weapon, some water or ammo supplies or some tool unlocking a couple of locked area, dying a lot in the process to radiations, mines and various enemies.
As you find notes and alien artifacts you uncover the story of the world while also uncovering your past and crafting your own story.
The game is fun from start to finish ; note that it is also very stable.