I am reading Game Center programming Guide
In a turn based game, the Current Player is the only one making move that will affect the game.
While the current player si playing, it is possible for other players to make move that only affect them, like moving card in their hand.
I am tring to choose between the new session way or the turn-based one. i think that most of the time, all player will be connected at the same time but it could be nice to have the flexibility of turn based.
I am builing a card game for my mother , so we can play while being in different city :-)