, you need to manually replace or add the specific file into the game's directory. Installation Guide for PC Locate your game directory : Go to the folder where you installed the game (usually
However, if you only play modern, maintained maps (like those from UGX or Rezzurection ), you do not need this patch. The file is a relic—a piece of modding history that represents the chaotic, global passion for Nazi Zombies before official tools were robust.
If you are looking to create or implement a custom feature using this file, the process generally involves modifying game scripts (GSC) and compiling them into a new patch file. How the Patch.ff Feature Works
If you simply want Call of Duty: World at War in English with all Zombies maps:
(If the map is named slightly differently, check the exact folder name inside usermaps .)