Instructions to Install the Game for Mac Users:
If you're unable to open the game because "the developer cannot be verified" with options to either Move to Trash or Cancel, don't click on any of the options yet and head over to System Preferences -> Security & Privacy -> Click the lock to make changes -> Enter your password -> You can now click on the Cancel option -> And in the Allow apps section, select "Open Anyways".
If this didn't work, you can open your terminal application and type in "sudo spctl --master-disable" -> enter your password -> and restart your Mac. Check the Security & Privacy once again and in the Allow apps section, you should see "Anywhere" is selected. Then you can now open game. Open Unidentified Developer Apps
If none of that still works, you can try running the windows version through wine.