The goal in Tap Tap Revenge is to tap at the bottom of the screen in time with bubbles that descend from three colored beams of light that snap and crackle with energy. The more bubbles you can pop in time, the higher your score. You’ll also get points for shaking the iPhone or iPod touch left and right or up and down in time with arrows that descend down those light beams.
Four difficulty levels keep your fingers tapping–and kept mine tapping enough to wear out my wrist. I need to ice it.–Peter Cohen