Hello! Could you let us know what happens when you try to open the game, and whether you are using an Intel Mac or a M1/M2/etc Mac? Thank you! :)
sorry for the late reply, i have an M2. at first it tells me the game might not be free of malware, but pretty much anything downloaded on mac makes that message appear so I give it permission to open from privacy and security in system prefs and it opens. However, if I try to open it after this, the best I can describe it is nothing happens at all. Usually the game icon will show up on the bottom bar, and there is some movement, but I don't see the icon. There's no message or anything indicating any issue. it just doesn't open.
Heyy, I'm on the Mac and have also faced this problem. Luckily, I've found a way to get in the game (for now). First, in the game folder, right-click on the .app file (the one with the Ren'Py app icon) and press 'Show package contents'. Go to the 'Contents' folder, then 'MacOS', and finally run the executable file titled 'WHODUNNIT'. Hope this helps!