The classic card game "Cheat" for iPhone.
It is also called "I doubt it".
The game is played by 4 players(you and 3 AIs) with 52 cards in this application.

Once the game starts, you play a card(or cards if you choose it from "settings") in order but the cards should be face down.
When you play a card, you need to claim "what card you played". The first player claims "A", and the second player claims "2", and the next does "3"... After "K" was played, the next player have to repeat it from "A".
It is important that you don't necessarily have to play a card as same as what you claimed. For example, you declare "A" and you can play a card of "J".
When a player plays a card with his claim, every other player can check the card by calling "Cheat".
When the "Cheat" is called, the card is turned and to be face up.
If the card doesn't match the claim, the player who played the card should take all the cards played on the pile.
If the card turns out to be same as the player claimed, the player calling "Cheat" should take all the cards.

Have fun!

Special Thanks
Frame design http://frames-design.com/
Silhouette design http://kage-design.com/
Maoudamashii http://maoudamashii.jokersounds.com/
The matchmakers http://osabisi.sakura.ne.jp/m2/
"Illustrations for free".com