If the zip contains .iso files, you may need to "mount" them using a virtual drive tool or Power ISO to make the computer think a physical disc is inserted. :
Depending on where you sourced it, the zip file generally contains: File: Nancy Drew Shadow at the Water's Edge.zip...
This 23rd installment in the series can sometimes be finicky on newer operating systems: Shadow at Waters Edge _ Save File Request : r/nancydrew If the zip contains
Extract the specific save file (usually ending in .sav or similar) to your game's data folder, typically found at: Documents\The Shadow at Waters Edge . If the zip contains .iso files