The Witcher 3.
A good 8/10 game? Sure. THE GREATEST GAME OF ALL TIME? Not even close.
Generic fantasy world 101, average gameplay, generic story (Main game), tear-inducingly boring start, one of the most awfully-written, counterintuitive choice systems of all time (Again, I'm talking main game and not the DLCs since HoS is awesome).
People praise it because of things like the Bloody Baron quest (which I think is one of the most well-executed questlines ever), but those top-tier things makes up 10% of the game and the rest of the 90% is just a generic RPG which is vastly inferior to many games.