Card Play
Another great feature of this game is the use of the iPhone accelerometer to control the visibility of cards in your hand. When the device is tilted toward the player, the cards reveal themselves for selection and play.
This happens in two stages. First they shift out from their pile into a “frown” shape, then they flip over, tilt and enlarge. Simply touch a card to select it or deselect it for play. Tilt the device back down to the first stage to make sure your cards are hidden, then all the way down to play the card(s).
The cards will flip only during the discard and play phases and only for real players. If you try to display the machine player’s cards, you will be disappointed twice: Once because you can’t cheat, and once because you tried to cheat. 
Two warnings:
- If you are the red player, tilting the device on a table may cause the ringer volume button to be pressed
- Watch out for the tab buttons as you tilt, you may hit one and be forced to press the Game tab to get back to your game
