The Mafia Boss Mafia Game, Play Online Mafia Role Playing Game of real Mafia Wars. TheMafiaBoss is a FREE web based massive multiplayer online game, based on the Real Mafia Life so called La Cosa Nostra. You wanna be a real Mafia Don like Al Capone, John Gotti and have all the little mafiosos Kiss Your Ring ... or Die, then you are at the right place!.