The answer to that question depends on your tastes, your current situation (amount of free time, mood, etc…) and many more. There’s no such thing as the “best” when it comes to a subjective piece of media.

I can’t even decide on my favourite game, because what I like and what I want to play depends on the aforementioned factors. I may be interested in a strong narrative today, on puzzles tomorrow, and on a crazy platformer game next. Different games resonate with me differently depending on when I play them.

Games that really stayed with me are (in no particular order) Xenogears, Metal Gear Solid, CrossCode, Digimon World, Oddworld Abe’s Odyssey, Ace Combat 4-6, The Talos Principle, Ori and the Blind Forest, Threads of Fate, and I also spent a crazy amount of hours on Stronghold, Advance Wars: Days of Ruin and Medieval II Total War. There’s, like, at least half a dozen different genres in that list and all those games are very different from one another, but all had different qualities that resonated with me for one reason or the other.