Batman: Arkham Origins Blackgate - Deluxe Edition amplifies the 2.5-D game with new maps, enemy encounters, difficulty levels, batsuits, and enhanced visuals. A companion game to Batman: Arkham Origins, players can continue the storyline of the console version and discover more details of the Dark Knight’s past. Featuring stealth gameplay, free-flow combat, and Batman’s famed arsenal of gadgets, the genuine Arkham experience is reproduced in a deep, action packed side-scrolling adventure.

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.