The opfordemofull.exe file you have requested: Official Demos / Opposing Force Demo (Dont need Halflife) - 71.25mb is not available. Perhaps try browsing all files for the game Half-Life: Opposing Force and upload any files you want to share or are missing. This is the only information we could locate:

(download this if you don't have Half-Life) Half-Life: Opposing Force is the official game expansion for Half-Life. In Opposing Force (Op For), players return to the Black Mesa Research Facility to experience an entirely new episode of single-player actio

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