derpapp.com
Derp for iOSA silly, fast-paced, two-player game for iPad, iPhone, and iPod touch. Is a fast-paced test of reflexes that you play with a friend sitting across from you. Launch a ball at your opponent, trying to get it past his or her paddle. Keep both balls from getting past your paddle as you try to score points against your friend. As you play, the balls move faster and faster, and the first person to score ten points wins. Watch out for when the balls hit each other!
http://www.derpapp.com/