Plot At the underground Black Mesa Research Facility, physicist Gordon Freeman participates in an experiment on a crystal of unknown origin. This triggers a resonance cascade, which causes widespread damage and teleports in hostile alien creatures. Venturing to the surface, Freeman discovers government soldiers have been dispatched to cover up the incident by killing humans and aliens alike. He is instructed by a scientist to make his way to the Lambda Complex to stop the alien invasion.
Plot At the underground Black Mesa Research Facility, physicist Gordon Freeman participates in an experiment on a crystal of unknown origin. This triggers a resonance cascade, which causes widespread damage and t.eleports in hostile alien creatures Venturing to the surface, Freeman discovers government soldiers have been dispatched to cover up the incident by killing humans and aliens alike. He is instructed by a scientist to make his way to the Lambda Complex to stop the alien invasion.