I'm looking for a decent preferably free chess or cribbage or poker wifi game for the iPhone. I would like to be able to play turn type games like that with my fiancé while I'm at work where one of us takes a turn and then can wait for the other to take a turn. Anyone have any ideas? I only have to 200mb plan so hopefully something that won't chew up a bunch of data when I'm not around a wifi network.