Includes: The Dark Knight Pack Man of Steel Pack Batman 75th Pack Access to 3 additional DLC Packs Save money on content for this game by purchasing the Season Pass. The Season Pass will include six DLC packs each with a unique themed mission level with story and free play modes. Players will be able to unlock a total of over 40 characters, vehicles, achievements and more.

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.