Right click on the toplevel folder (the icon of a ginger girl with a helmet), click "open", the system will say that its origin couldn't be verified, click "cancel". Right click again, then choose "open all the same" (or something similar, I'm tranlating the French interface). If you have a M1 processor it may take some time before anything happens, the game being converted in the background.The contents. When you open it up you get the Mac folder and Resources folder