Dying Light 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.

Includes: Dying Light - Gun Psycho Bundle (DLC) Get crazy about guns! Put on the exclusive Gun Psycho outfit, excel in precision shooting thanks to the reflex sight on your shiny new Marksman Rifle, and conquer the countryside driving the Wasteland Cruiser. The Gun Psycho Bundle includes: a new buggy paint job, a new character outfit, and a new weapon blueprint. Note: This content requires Dying Light: The Following expansion pack. Dying Light is a first-person, action survival game set in a vast open world. Roam a city devastated by a mysterious epidemic, scavenging for supplies and crafting weapons to help defeat the hordes of flesh-hungry enemies the plague has created. At night, beware the Infected as they grow in strength and even more lethal nocturnal predators leave their nests to feed on their prey.