iPhone and iPod touch have become “serious competitors to Nintendo’s DS handheld and Sony’s PlayStation Portable,” report Nick Wingfield and Christopher Lawton (online.wsj.com). And for good reason. Says one gamer who “sold his PSP and may get rid of his DS soon”: “‘I can listen to my iPod and play games at the same time, and when I’m done I can just put it in my pocket.’”

Tapulous has brought a new rhythm section to its highly popular Tap Tap Revenge. The first special edition of the music game — Nine Inch Nails Revenge ($4.99)— lets you tap and shake to the beats of 13 Nine Inch Nails tracks. Play solo or against a friend in head-to-head two-player mode.