Dark Matter is a 2.5D side-scrolling survival horror game, set in a derelict spaceship besieged by a sinister alien presence, and infested with deadly parasites. As the Ensign, you must explore fetid hallways and abandoned facilities, scavenging for parts and blueprints, expanding your arsenal to up to four deadly weapons and freely...
Open the Steam client, login and locate the Games tab on the top menu. Click this and then select “Activate a Product on Steam…”
Enter your unique code that's displayed on the 'Orders' page of CDKeys.com and follow the prompts to activate.
Your game is now viewable in the “Library” tab and is available to download/install when you’re ready. You can find additional support for the Steam client here: https://help.steampowered.com/en/wizard/HelpWithSteam