Heya yeah we have no true Mac support
There is videos on youtube I found in the past of people playing the mod on macs, But I don't have one myself to try.
I can release a .zip version for people but that'd be all I can do they would be the same files that are in the .exe but I'm sure a couple of things would need to be changed to get it to launch
You'd probably have to replace the GameX86.dll with the Doom 3 mac equivalent from it's base folder,
But GameX86.dll and DoomReborn.exe have some things that Brent added that aren't found in the Doom 3 .dll and .exe
And this is probably the reason the Exit switch wasn't working for Alexia at the time
Do you own the original Doom 3 for your mac?
I will put a .zip before the next version