Includes: Heroes of the Inner Sphere DLC In Heroes of the Inner Sphere DLC we've opened up the Mercenary experience with the new Career mode and packed the Inner Sphere with new content to discover.Whether you start a career from scratch or import your progress from the original Campaign you can establish your Mercenary Company as you please while exploring the completely rebalanced Inner Sphere.Follow your chosen career path from War Dog to Treasure Hunter in the new Career Mode.Explore new warzones, new quests, new missions that span the full breadth of the Inner Sphere.Hunt the Heroes - special Hero quests tell the story of 7 new heroes and their lostech mechs.Find new mech chassis and variants, new weapons, new equipment, as well as blueprints to quirk your beloved mechs.…and much 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 "LIBRARY" tab and start downloading.