BioShock Infinite Game Keys

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.

See the world through Elizabeth’s eyes in BioShock Infinite: Burial at Sea – Episode Two. Set immediately after the conclusion of Burial at Sea – Episode One, this final episode puts you in the role of Elizabeth as she journeys through Rapture in an effort to rescue the little sister she abandoned. Developed by Irrational Games, the studio behind the original BioShock and BioShock Infinite, this continuation of the Burial at Sea saga features parts of Rapture you’ve never seen before, incudes modified stealth-oriented gameplay that brings you new weapons and plasmids, and involves nearly every major character from the original BioShock and BioShock Infinite. BioShock Infinite: Burial at Sea - Episode Two is the last of three BioShock Infinite add-on packs and it concludes the storyline of BioShock Infinite and Burial at Sea. This pack is included in the BioShock Infinite Season Pass and will contain new Achievements.