Holy geez, I actually remember playing that FF8 card game years ago. Feeling oddly nostalgic now...
I have no idea why both Square and CD Projekt chose to include card games within their respective RPG titles, but you won't hear me complaining. Sure it makes for some hilarious story development ("I know the world is about to explode, but did you wanna play a quick round?"), but the value-add seems more than worth it.