The first game in my opinion is THE best game based on organized crime, the sequel looks very promising!
So far no news about online multiplayer in Mafia 2, I think there won't be one... ohwell

"Pain has no tendency, in its own right, to proliferate. When it is over, it is over, and the natural sequel is joy."
- C. S. Lewis

"Life does not cease to be funny when people die any more than it ceases to be serious when people laugh"
- George Bernard Shaw