Sean Z P Harris at 2012-10-19 02:02:09:
Reminds me a bit of the 1998 classic PCgame, Half-Life:
The game's protagonist is the theoretical physicist Gordon Freeman, an MIT graduate. Freeman becomes one of the survivors of an experiment at Black Mesa that goes horribly wrong, when an unexpected "resonance cascade"—a fictitious phenomenon —rips dimensional seams, devastating the facility. Aliens from another dimension known as Xen subsequently enter the facility through these dimensional seams (an event known as the "Black Mesa incident").[11]
As Freeman tries to make his way out of the ruined facility, he soon discovers that he is caught between two sides: the hostile aliens and the Hazardous Environment Combat Unit, a United States Marine Corps Special Operations division dispatched to cover up the incident by eliminating the organisms, as well as Dr. Freeman and the other surviving Black Mesa personnel