https://www.howtogeek.com/342016/how-to-shrink-your-pc-game-files-with-compactgui-and-save-drive-space/
 
Developers of PC games, you’re getting kind of sloppy. Game installations have ballooned into drive-filling behemoths. Maybe 10 gigabytes for Far Cry 3 doesn’t sound like too much…until you add 67 gigabytes for the new DOOM, and 80 freakin’ gigabytes for Shadow of War. Pretty soon, even the most capacious drives start to feel a little snug.
 
They sure are.  I am gaming less since system requirements are getting out of hand.  To game on a PC I can't see how anything less than a 500gb SSD would work.  Fallout 4 is 90gb.  Plus major Windows 10 updates will keep older files from a previous update temporarily and that can add up.