I feel like most people who have been playing video games since childhood have one or more of a select few games that they go back and replay every few years.
For me I’ve been replaying Pokémon Emerald Version recently. Nothing like nostalgia and being able to better enjoy aspects of a game you didn’t understand as a kid. ☺️
I played the RE4 remake in its entirety four times in a row when it came out. The original is a good answer for this too.