Games often bind skills or other game mechanics to the function keys.

Anecdotally, I switched from `ctrl+shift+i` to F12 for opening the web inspector due to many websites capturing that keybinding for their own purpose (claude and code editors) if I didn't have a function row I'd have to find an even more arcane hotkey.

They're just a nice set of purpose-undefined keys that you or the application can bind to useful functions.