Final Fantasy VII, I remember back in 97 back when I was in School, I saw this picture of Cloud with his massive Buster Sword and thinking "Wow.... I really wanna play that" so as Christmas was around the corner I asked for it and BAM! I got it... took me over a year to complete it, then after that came VIII and I was convinced it was sooo much cooler then VII at the time (you know that feeling you get when your young and impressionable, you think the game that you are currently playing is way better then the previous one) but after I completed it I was kinda meh and it seemed to happen that way with all the other FF games that came out.

Of course since then I have played at least 1 version of every numbered entry that has been made, most of them on the PSone.