Hey! so i was having a problem as well with opening it and i finally got. After doing some research on how to use terminal, i finally figured out! So once you have the zip, make sure its opened and in your downloads. You're gonna open terminal and the first thing you will type is "cd ~/Downloads". This command worked better for me so hopefully it works for you. Click enter and then type "chmod -R 777 TOUCHSTARVED-INTEL.2.app" and click enter again. Leave terminal and try to reopen the game. From there, you should be able to follow the rest of the instructions with allowing your mac to open the game. I hope this helped!