Multiplayer game via Game center with Invite friend and Auto-match. Game should look like that: Left up corner should be my score, center should be 30 seconds timer, right should be my partner score. At the center of the screen should be a UIButton, when I press, my score should be +1, so every touch on button = 1 point for my score. If my partner will touch the button on his devices, i should see on my device his score. Like a normal multiplayer game. When time is up, a new uiview should appear with my score, my partner score, and text you win or you lose, depends of score.