I just finished replaying FF VIII since it came out on Steam and came to a realization... Triple Triad is an amazingly addictive minigame. Its simple concept makes it easy to pick up and then it's so much fun. All the different rules keep the game versatile and fresh (although some of them can go die in a fire) and FF VIII has enough sidequests and rewards for Triple Triad to keep you busy for quite some time if you enjoy it.
Also, THAT THEME.
http://youtu.be/74ZXp_5M_7c
I've spent many many hours in FFVIII doing nothing but playing Triple Triad. Discuss the awesomeness of this minigame.