High Quality Content by WIKIPEDIA articles! Half-Life is a science fiction first-person shooter video game developed by Valve Corporation, the company`s debut product and the first in the Half-Life series. First released by Sierra Studios, the game was also released for the PlayStation 2. In Half-Life, players assume the role of Dr. Gordon Freeman, a theoretical physicist who must fight his way out of a secret underground research facility whose research and experiments into teleportation technology have gone disastrously wrong.