NOTICE: Activation key must be used on a valid Steam account. Requires an internet connection.
About the game
A massive demonic invasion has overwhelmed the Union Aerospace Corporation's (UAC) Mars Research Facility, leaving only chaos and horror in its wake.
As one of only a few survivors, you must fight your way to hell and back against a horde of evil monsters. The path is dark and dangerous, but you'll have an array of weapons including a pistol, a chainsaw, grenades, and more--to use for protection.
1. Register an account
2. Download Steam
3. Click 'Games' at the top of your screen and select 'Activate a product on Steam'
5. Confirm the code and install the game
6. You can access your games by clicking 'Library' at the top of your screen.
7. After the download is completed, you can enjoy your game!
Now on Startselect!
Now available at Startselect: DOOM 3. At Startselect you can purchase your digital games and gift cards anywhere and anytime. All of our products are fully authorized and supported by the publisher or developer.
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