There's only one game that still defines as my favorite and also defines my level of enjoyment with every succeeding game I have ever come across. If a game gave me the same feeling I felt like this game did, then to me, it was a great game worth remembering.
That game, is Chrono Trigger.
Now you might think "Oh great, another Chrono Trigger junkie", now now, hear me out first.
I don't base it on mechanics, gameplay, or other technical stuffs. I base it on the "feeling". That tingle on your spine after completing a game for the first time. That moment you finally relaxed and laid your back on your chair, after hours and hours at the edge. Thinking to yourself "Man, that was an amazing ride". Of course, for 2 decades after CT was released, I have felt that with the plethora of games in my lifetime.
This may sound cheesy, but
My only wish, is that the same feeling will be with me when my life comes to an end someday. That I could also say "Man, that was an amazing life".