Set in a dystopian world, Final Fantasy VII's story centers on mercenary Cloud Strife who joins with several others to stop the megacorporation Shinra, which is draining the life of the planet to use as an energy source. As the story progresses, the situation escalates and Cloud and his allies face Sephiroth, the game's main antagonist.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.