Mafia Wars, Slotomania on This Week’s List of Fastest-Growing Facebook Games by MAU

This week’s list of fastest growing games on Facebook based on monthly active users is dominated by Mafia Wars. Zynga’s mature mobster title grew by 3.6 million players in the last week, which was more than double the second game on the list — Monopoly Millionaires. According to AppData, our metrics tool for analyzing the top games on Facebook, Mafia Wars had a suspicious random spike in traffic over the weekend which could be due to a cross-promotion or ad spend.