What game makes you feel old?

Just a simple question. I was watching some reviews yesterday, and I realized that Red Dead Redemption 2 is already 5 years old! I still feels like it is one of the newest game. And RDR 1 is like... released 13 years ago??? really?? Time really flies. So I just wanted to share this feeling; what game made you feel old, or make you realize that the time really flies, all the sudden?