Thank you for reaching out! Unfortunately I am not sure what could have caused this either, as I do not own any macs I could run tests on. My only guess is, that because the engine that I used to develop this game in is not supported past a certain mac generation, this may be why the game isn't properly running on your device. I thought I had written something about that in the description already, but I guess I forgot - I will add it now. If you're still interested in playing the game, I suggest playing the browser version instead. My apologies for the inconvenience! :(