You can run Half-Life: Opposing Force on Windows operating systems. Half-Life: Opposing Force is a game developed by Valve and it is listed in the category. Half-Life: Opposing Force is licensed as Half-Life: Opposing Force.
Minimum Requirements: 500 mhz processor, 96mb ram, 16mb video card, Windows XP, Mouse, Keyboard, Internet Connection
Recommended Requirements: 800 mhz processor, 128mb ram, 32mb+ video card, Windows XP, Mouse, Keyboard, Internet Connection