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Half-Life: Opposing ForceMods

Half-Life: Opposing Force

Half-Life: Opposing Force mods

A mod changes the game itself. It needs something to load it, it may need other mods first, and it only works on the versions its author built it for.

739 mods · newest update 18 Sep 2026

Maps631 Single player44 Menu Background27 Resources14 Sprites14

739 mods

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739 mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.