Yes, it's the same social setting as the one where the player lives. Of course, with fictional characters, but they can be real anyway.
The sci-fi elements have nothing to be with technology or even with human evolution, but with human nature. In the real world (this is, outside the novel) there are people that trust in it, others don't, but nobody can demonstrate it's existence or non-existence. Like you can't demonstrate that God exists or not.
The protagonist/player has, initially, a very limited knowledge about this, but events happen in a way that he has a chance to investigate and follow clues to reach a deeper knowledge.
Also, there is a horror touch in what the protagonist can take decisions that will make him fear for his life, suffer nightmares, have dreadful visions...
Onibaba is my favorite one.