Europa Universalis III delves deeply into the areas of exploration, trade, warfare and diplomacy. This epic strategy game lets players take control of a nation and guide it through the ages to become a great global empire. Unparalleled in its depth and historical accuracy, Europa Universalis III gives the player unprecedented freedom in how they choose to rule their nation from an impressive choice of over 250 historically accurate countries.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.