Tapulous has released Tap Tap Revenge 4, the latest iteration of the developer's long-running music game series for the iPhone and iPod touch. Players rack up high scores by tapping onscreen targets in time with beats. TTR4 includes over 100 free tracks from the likes of No Doubt, Megadeth, The Killers and Benny Benassi. "Premium" tracks are extra, however, as are accessories for a person's in-game avatar.
