A lot of other reviews focus on gameplay or service but where this game really shines and is the crazy story and experience of the whole journey. This is the best sci-fi experience I ever had. I'd rank the experience above any of the classic books too because this game is inspired by them but gives you an open world to explore it in. The story they crafted is awesome and there are actually multiple futures you can lead mankind to-- some terrifying depressing. No other game I have ever played has had so much thought blended into its story and immersive environment. In addition they blended real life thinkers, philosophy, science and politics into this fictional world so well its almost as if the writers were creating prophecy.
