kazucrash:Half-LifePublisher: Sierra On-Line (1998 Windows), Valve Corporation (2003 Windows, Mac, L
kazucrash: Half-LifePublisher: Sierra On-Line (1998 Windows), Valve Corporation (2003 Windows, Mac, Linux)Developer: Valve Corporation, Gearbox Software (PS2)Platform: Windows, Mac, Linux, PlayStation 2Year: 1998 (Windows), 2001 (PS2), 2013 (Mac, Linux) Happy 20th anniversary, Half-Life! -- source link