In the beginning, there ws Half-Life, Valve's blockbuster debut. With its engrossing story line, skeletal animation system, and so-good-it's-scary AI, Half-Life blew away the gaming world. The Half-Life universe grew with the release of Team Fortress, Opposing Force, and, most recently, Counter-Strike. These games pushed the Half-Life engine to its limits and beyond, adding exciting new story lines, weapons, enemies, and multiplayer challenges. See for yourself why PC Gamer declared Half-Life "The Best PC Game Ever".