If this is an "Update Only" file, you must have the base game already installed. You typically copy the contents of this zip into your existing game folder and replace the old files to apply the "piece" of the update.

If you are looking for a related to this specific file, it typically refers to one of two things:

: If the .zip file is asking for a password to extract, common passwords for files from major third-party distribution sites (like F95zone or similar) are often the name of the site where you downloaded it or the developer's name (N_K_R or NLT).

If you are stuck on a puzzle piece in this version, it likely involves the or Police Station areas which were focal points of early updates.