Game: Mafia Wars

Zynga has been quietly closing a lot of games of Mafia Wars's vintage lately, with both Street Racing and Roller Coaster Kingdom gone in the span of the past few months. Mafia Wars might have become a relic of an earlier era in social gaming in the hands of a lesser developer, but Zynga has steadfastly refused to abandon Mafia Wars and its 24.1 million active users, 8.7 million of whom are playing every day. Instead, Mafia Wars has seen a series of updates and upgrades roll out in the past year that try to bring this old text RPG into the era of more interactive, graphically rich games like FarmVille. Mafia Wars: Las Vegas is possibly Zynga's greatest success to date.