Doom 3 (v1.3.1) [gog] -

: As you fight through the facility, you discover ruins of an ancient Martian civilization that once fought the same demonic forces. They created a weapon called the Soul Cube , which you must recover from Hell to seal the portal.

: You eventually learn that Dr. Betruger has defected to the side of Hell, orchestrating the invasion in exchange for power. DOOM 3 (v1.3.1) [GOG]

The story of DOOM 3 (v1.3.1) serves as a gritty, horror-focused reboot of the original series. It is set in the year 2145 on the Mars Research Facility owned by the . The Setting and Premise : As you fight through the facility, you