Card games can be fun to pass the time.
One obstacle to having fun though is that sometimes the rules are too complicated for a new-comer; I mean if you want to play Texas Hold 'Em with a total beginner then it can be a little awkward.
Recently I discovered the card game 'uno', and honestly I think it's the perfect mixture of a fun game that isn't too complicated. A total beginner can learn how to play in just a minute or two.
If there were a casino somewhere that played 'uno' then I'd have to go play at least once.