How do I download on mac

I have a mac and when i download it becomes a .exe. i try to extract it but it says it can’t. What do I do?

Horizon and Infinity are for Windows only.

As Frank said “Horizon and Infinity are for Windows only.” However you may be able to use a vm set to windows to get it to work. (But i am not to sure if it will work)

Just found a post that you may want to look at: