I love texas hold 'em, it's teh best thing ever to come out of texas. :P

Make the deck of traditional cards look a little final fantasy-ish, and it would fit right in... just replace the old suits like diamond and spade with stuff from the ff world, like crystals and swords, make the face cards stuff like tonberries and goblins, and presto, and call it some cheesy rip off name like uldah hold 'em, and presto, lore friendly texas hold 'em.

That would be so fun if you could play that in FFXIV, with gil wagers no less.