Pretty simple question... How can I block fortnite? I want it dead and gone from my network.

Do you other Sophos Products in your network?

We can block Apps (and even more apps with Synchronized App Control in Case you use Sophos Endpoint). 

Are you a home user or is this a business appliance? 

Personally speaking, i block apps on Device Level, not Gateway level. 

This is for a home use with many devices and it's just become too cumbersome to go to the device level. I am not currently running the Sophos endpoint. My network consists of a unifi usg, but it does not have much blocking capabilities. I want to block it entirely from the entire network.

This is for a home use with many devices and it's just become too cumbersome to go to the device level. I am not currently running the Sophos endpoint. My network consists of a unifi usg, but it does not have much blocking capabilities. I want to block it entirely from the entire network.