A massive demonic invasion has overwhelmed the Union Aerospace Corporation's 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.
GunmanProductions™ says
Still playing this game, I love the atmosphere in it.
Technical side: Very flexible user-friendly engine. Allows me to build/implement almost anything I want to, with awesome results in return.