In a desperate war for Earth’s survival, against an unrelenting enemy, the only
way to defeat them is to become one of them. Armed with advanced weaponry and vehicles
and aided by an elite squad of marines, you take the battle to the heart of the Strogg
home planet and become earth’s only hope for victory.
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System Requirements
Key Activation
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 “MY GAMES” tab and start downloading.