Disobeys hostile alien abductors and struggles to escape the huge Nodriza Zeta Ship, orbiting the Earth many miles above the Capital Wasteland. Mothership Zeta leads Fallout 3 in a totally different direction - outer space. Meet new characters and join them in a desperate attempt to escape the clutches of aliens. For this you will have at your disposal new and powerful weapons such as the Alien Atomizer, the Alien Disintegrator and the Drones Canyon. You will also have new clothes, such as the Era Gemini space suit and even the Samurai Armor.
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