According to Egyptian legend, Horus, son of the light, outwitted the evil God Set and imprisoned him in a secret tomb. Five thousand years later, Lara Croft discovers the lost tomb and unwittingly unleashes the evil God Set, fulfilling the ancient prophecy of his return to plunge mankind into darkness! In a race against time, Lara must use all her wit and skill to re-imprison Set and save the world from Armageddon.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.