Esso x Def Jam Rapstar. Def Jam and game developer 4mm games continue to tease out their upcoming rap battle game “Rapstar” since they still don’t have an official launch date. So far their campaign has been pretty “abstract” focusing more on emotion and personality of hip-hop in general vs. actually showing any footage of the game. The latest teaser ad comes courtesy of Esso who pays respect to all that’s great in hip-hop.