Cocked, loaded and ready for action, Duke delivers epic ass-kicking, massive weapons, giant explosions and pure unadulterated fun! Put on your shades and step into the boots of Duke Nukem. The alien hordes are invading and only Duke can save the world. Pig cops, alien shrink rays and enormous alien bosses can’t stop this epic hero from accomplishing his goal: to save the world, save the babes and to be a bad-ass while doing it. The King arrives with an arsenal of over-the-top weapons, non-stop action, and unprecedented levels of interactivity. With hours and hours of action, and a range of bodacious multiplayer modes, rest assured knowing the fun goes on and on.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.