by: fishdog.net • 12
Play the card game Speed with a friend or one of three robot opponents. Play a card one less or one more than the number of a card in the center of the table as fast as you can. Play a 3 card on a 2 or 4 card, a 7 on a 6 or 8 card, a 13 on a 12 or 1 card. First player to play all cards wins.
Also available in the App Store: Speed Gold (same app but with no ads).