Final Fantasy VII
I never played any ff game until Final Fantasy XIII, which is according to many fans of this franchise one of the weakest, considering how linear playability is. They very often mentined how great FFVII was, so I decided to try it out. I don't regret I did it, it was a fantastic experience even today. Aeris death was by far one of the saddest moments in the game, and you actually get to like all of the main characters even though the game is quite old for today's standards. Perhaps I would take a look to the remake as well, but with all that said, this game is a "must play" for all veteran ps1 players who haven't started with the final fantasy series yet.