The player takes the role of taxi driver Thomas (Tommy) Angelo, who, while trying to make a living on the streets of Lost Heaven, unexpectedly and unwillingly becomes involved in organized crime as a driver for the Salieri crime family, led by Don Salieri.
Through the events of the game's story, Tommy begins to rise through the ranks of the Salieri 'family', which is currently battling the competing Morello family, led by the sharply-dressed Don Morello. Eventually becoming disillusioned by his life of crime and violence, Tommy arranges to meet a detective (Detective Norman) in order to tell him his story, to be given witness-protection, and to aid the detective in the destruction of the Salieri crime family. The 'Intermezzo' chapters of the game depict Tommy sitting in a cafe with the detective, relating his life story and giving out important pieces of information at the same time.
To run Mafia on high graphics settings your PC will require at least a 0MB GeForce 7300 LE / Radeon X1270 with a Pentium 4 1.8GHz or Athlon XP 1600+ CPU. The RAM requirements are at least a 128 MB memory. Finally, Mafia will need hardware that is a 13 year old PC or younger to run recommended.