Final Fantasy, definitely.
Started with VI (still my favorite entry), then played all of the other entries which I enjoyed to varying degrees (X, IX, XII, VII and V being my "best of the rest", in no particular order). I gave FFXI a wide berth as I don't play MMORPG's, so I don't count that. Still a big fan at this point.
Then FFXIII happened.
Then XIII-2.
Then Lightning Returns (purchased on a deep Steam sale out of curiosity, was still not worth it)
The next sequential numbered entry was yet another online game (FFXIV). Skip.
Type-0 was atrocious.
I held out hope for FFXV, and fully intended to give it a punt on day 1, but playing the Duscae demo killed whatever hope I had that I would enjoy it.
That is an absolutely abysmal track record over the past decade, at least for me personally, and I've finally come to accept that whatever Final Fantasy has become nowadays, it bears little resemblance to the games I used to love. Some people still enjoy it of course, I'm just not one of them.
I AM in for Zodiac Age, however, but only because I already know what I'm getting with that game. Any new, non-remake game in this franchise will face serious scrutiny from me before I make another purchase, no blind buys ever again.