Whoa whoa now. Scribble brings up an interesting point. Let's say this game IS based on Dante's Inferno, maybe not all of us are "Circles of Hell". Maybe someone is Dante, Virgil, or one of the souls Dante spoke with or saw. Perhaps Mafia are Lucifer or one of the demons written about in the story?
Just throwing out some theories.
P.S.: I love Dante's Divine Comedy so this shit is right up my alley.