On Mac how do you open the app after unzipping
I had the exact same problem but managed to fix it. So apparently for macs, the zip file goes into the bin and an app (which doesn't even have the actual logo for the game, it looks like a weird grid iirc) pops up. So I just deleted that app, took the original zip file out of the trash, expanded that instead and then voila. The actual app is in my desktop. Then I could move that to the applications folder and now it is available for playing. Hope it helps.