Friday night, eh?
and which one were you, Jono-chan? I was most likely the judge at some point during your game.
In answer to the other question, Mafia is a game by which one small, coordinated team with lots of information tries to manipulate the other, larger uncoordinated team with less information into destroying itself. It's like being a ninja, but without all the swords and smoke and thousands of american posers thinking someone will teach them.
There are few rules, but there is strategy out the wazoo.
If you'd like, streetz, i can go into a more in-depth review of the mechanic of the game and some of the basic strategies thereof, i just don't want to bore anyone.