Have you played a game that stayed in your head long after you played it?
For me, Outer Wilds would be that game. I feel like I haven’t stopped thinking about it since I beat it a couple years ago.
The Talos Principle - for me, the puzzles hit the sweet spot of being hard enough to be on my mind all day, but never feeling like the solution was out of reach. But even more than the puzzles, the philosophical elements made me reflect on life, civilization, and personhood in a way nothing else has. It was a peaceful, tranquil experience of just me, a serene soundtrack, and thought provoking text and puzzles.