Apparently Def Jam is developing a videogame called Rapstar, that allows players to be a rapper in the same way Guitar Hero allows players to be guitar players. The game isn't out until this winter, but there's a new trailer commercial for the game making the rounds now. As someone who has spent an inordinate amount of time perfecting my flow on "So What'cha Want" on Rock Band 2, I'm moderately excited to give this game a whirl. [Daily Swarm]