Omniball is a casual arcade/sports game designed specifically for the iPhone and iPod touch. Omniball expands the 2D multiplayer ping-pong genre in all directions. Choose a color and score points by spinning your paddle around a circular arena using the simple and intuitive sliders to deflect the color-changing ball back at your opponents.
What really stands out in this particular game is that you can play with another device user over Bluetooth.
Here's a video showing off a little of the game play - please check it out!