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| Component | Minimum Requirement | |-----------|----------------------| | OS | Windows 95/98/ME/2000/XP, or Windows 10/11 (via compatibility) | | CPU | 133 MHz Pentium processor | | RAM | 24 MB | | Graphics | SVGA, 16-bit color | | Storage | 400 MB free space | | Sound | Windows-compatible sound card | Half-Life- Opposing Force PC Game Free Download Direct Link