Hm, sorry. In that case I wouldn't know why you can't play the game. You did unpack the zip into a normal map and then execute the program to start, right? And you downloaded the one for your system, right? I wouldn't know if that would be pc or mac, but the pc one should work for most systems. If that didn't help, I too wouldn't know how to solve this problem. Do you experience the same problem with other ren'py games?