Dead Space is a 2008 science fiction survival horror video game developed by EA Redwood Shores (now Visceral Games) for Microsoft Windows, PlayStation 3 and Xbox 360. The game was released on all platforms through October 2008. The game puts the player in control of an engineer named Isaac Clarke, who battles the Necromorphs, reanimated human corpses, aboard an interstellar mining ship, the USG Ishimura.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.