Half- Life 2 was the first title to use Valve' s Steam content delivery system, a system that eventually led to Valve falling out with publisher Sierra Entertainment. Half- Life 2 ( stylized as HλLF.
Half- Life 2 is a science fiction first- person shooter developed , published by Valve Corporation, released on November 16, stylized as HλLF- LIFE following an extended development period of five years. Half- Life 2 ( стилизованное написание — HλLF- LIFE 2 разработанный Valve Corporation, издаваемый ими же , сиквел Half- Life, научно- фантастический шутер от первого лица, сокращенно HL2) — компьютерная игра Sierra. The major installments feature protagonist Gordon Freeman, a theoretical physicist who battles an alien invasion.