Mafia

Mafia is a popular game played by people from Board 8 on AIM

Learn more about it here

If you get randomly invited into an AIM chat group playing Mafia, you should probably check out the Newbie Guide first

How to play certain roles, illustrated by Bidoof comics:
How to play a Vigilante:

http://img171.imageshack.us/img171/554/00vigqn9.jpg

How to play a Mafia member:

http://img177.imageshack.us/img177/5529/00mafct1.jpg

How to play a Cop:

http://img443.imageshack.us/img443/821/00copww6.jpg

How to play a Bomb:

http://i14.photobucket.com/albums/a340/Dark_Random/bomb.jpg