: Any "loose" files (uncompressed files placed directly in the /base folder within the correct subdirectories) will always override assets contained within any .pk4 archive.

: Technical definitions (e.g., .def , .af , and .fx files) that govern game behavior and physics. Modding and Optimization

: Because they are ZIP-based, you can browse, extract, or modify their contents using standard utilities like 7-Zip or WinRAR.

: A massive demonic invasion erupts, slaughtering or transforming most of the base's personnel into zombies and nightmarish creatures.

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