Half-Life: Opposing Force
- Developer: Gearbox Software LLC
- Genre: Arcade/Action
- Originally on: Windows (1999)
- Works on: PC, Windows
- User Rating: 6.5/10 - 4 votes
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System Requirements
Processor: PC compatible, P-100
OS: Windows 9x, Windows 2000 Windows XP, Vista, Win 7, Win 8, Win 10.
Game Features:Single game mode