The studio behind Rock Band has a new rhythm game out for the iPhone and iPad that creates its levels around each players own music collection. Record Run, which was released last week, is a fairly simple game as far as those that come from developer Harmonix go: the game involves swiping up and down and side to side in order to dodge, jump over, or slide under obstacles blocking a characters path as it bounces down the street to the tune of whatever song a player is listening to.