It’s 2741 and the universe is at war. The Terran Empire is laying siege to the NSA, a treaty of colonies that upholds freedom and democracy. After losing the battle in space, the NSA is forced to retreat to its last stronghold. Can you snatch victory from impending doom?
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