Thousands of years ago a meteor crashed into Antarctica and the shockwaves of its impact are being felt in the modern age. Lara Croft will follow clues leading to a deadly secret, boldly leaping chasms and blasting monsters that no one has leaped or blasted before.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.