The storyline for Mafia II is a gritty drama and chronicles the rise of Vito Scaletta, the son of Sicilian immigrants. As the game progresses, Vito joins the Falcone crime family and becomes "a made man" along with his best friend Joe Barbaro.Go to: http://store.steampowered.com/ and download STEAM client
Click “Install Steam” (from the upper right corner)
Install and start application, login with your Account name and Password (create one if you don’t have).
Please follow these instructions to activate a new retail purchase on Steam:
Launch Steam and log into your Steam account.
Click the Games Menu.
Choose Activate a Product on Steam…
Follow the onscreen instructions to complete the process.
After successful code verification go to the “MY GAMES” tab and start downloading.