itch.io

A little bit late(well a lot)
This is not the game's fault. Mac denies access to apps downloaded from the internet, especially Itch.io because it may contain virus that could harm the computer.  To get the game running, u have to open Terminal(it's a software on every mac).

Then right the following commands:

 - cd application path( If you don't know what that is search it up, it should look somthing like this, cd Users/User/Downloads/Foxhunt_v1.1.03_Mac)

 - cd Contents/MacOS

- chmod +x *

then open settings -> security and privacy -> general  and there u should see the option to open Foxhunt_v1.1.03_Mac.app anyway

And that should let the game run

Edit: found a good reply on one of the apple discussion threads that explains this more easily, https://discussions.apple.com/thread/7586240