Question regarding zed behaviour

I’ve recently came back to the game for B42, I played it for a solid year almost exclusively over 5-6 years ago, life gets in way and you can’t play games as much etc.

Is there a mode or a mod that will cause roaming hordes of some kind?

I’m asking as I’ve setup outside Irvington on a small farm and I’ve put up log walls to build up carpentry then built stuff inside, I know these walls will likely never be actually tested by a zed as the closest they got is a 30 second drive away.

Just curious for my next play through.