There comes a point in single-player games where we can feel utterly alone with ourselves. It's not just that no one else is around in the game, but everything is obscured from our perception. The finite levels begin to close in as you feel their limitations stop you from doing what you really want to do. We even feel trapped within the very mysteries we're meant to solve as we question what the point of it all is. This only really affects us because it mirrors how life treats us a lot of times. Why are we doing what we're doing? Is there a point to living, some grand design that makes our work worth it? This exact sense of isolation is explored in The Talos Principle, a contemplative meditation on the nature of humanity wrapped in an excellent first-person puzzle game.
Not that you're human to begin with. You awaken in a Grecian garden with no memory of what came before, armed with only the sophisticated communication skills that an adult might possess. You then hear what claims to be the voice of God, who commands you to gather the multitude of tetrominoes scattered throughout. You have free rein to enter and unlock every area within your sight, but the voice forbids you from ascending the tower at the center. Collect all the pieces, and you earn life eternal. And yet you're not entirely blind to the circumstances around you. Your form is robotic in nature, so you immediately deduce that you're not a biological human being. Sometimes the details of the world around you turn blurry and fuzzy, as if the world itself is glitching, so it's not hard to figure out you're inside some kind of computer simulation.