Theater of the Mind. Not only is he going to rap about games in an effort to legitimize them as an actual cool thing to be into, he's going to rap about every game. This is the H-bomb of social hits, and Ludacris is taking it for you after the break. There are, it should be noted, several bad words.
If you're unable or unwilling to separate the game nods from profanity, our pals at Wambling Gamer are going to walk you through it.