This is a project of the message I sent you. Please let me know your comments:
Create a game that looks for 3 other opponents in Game Center.
There is a card set of twelve cards. Each card has a number from 1 to 12. Each player receives 1 card when the game starts and he shows it to the rest of the players after pressing a button in the middle of the board. The turns of the players are clockwise and the player with the highest card wins.