itch.io

Hello! That's a bummer D: I'm not 100% sure what you might be encountering as I don't have a macbook. If you haven't granted permissions for the game to open, that could potentially be it - https://support.apple.com/kb/PH25088?locale=en_US

See if that helps :) And good luck!

Try right clicking on the game file (click with 2 fingers). On the drop down menu that pops up click on show package contents. You should get some kind of window that pops up. Click in the contents folder and open the file that says Mac OS. Click on the exec file and it should open the game.