Hello I changed archive to .7z instead of .rar specially for Mac users because I read that Mac got default 7z archive you can use.
Try to download the unpacked game to your computer using this link. https://drive.google.com/open?id=1RIF_XHhOjzHYgqRlUKMKVhh-MwRREEkG This is just game files for Mac. No archives, nothing except game. I hope it will solve the issue for you.