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.
OS: Microsoft® Windows® 2000/XP (Does not support Windows Vista/7)
Processor: Pentium®IV 1.5 GHz or Athlon® XP 1500+ processor or higher
Memory: 384 MB RAM
Graphics: 100% DirectX® 9.0b compatible 64MB Hardware Accelerated video card and the lateset drivers
Storage: 2.2GB of uncompressed free hard disk space (plus 400MB for Windows® swap file)
Directx: DirectX® 9.0b (included)
Sound card: 100% DirectX® 9.0b compatible 16-bit sound card and the latest drivers
To activate the game, you need a Steam Account
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
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