Hey all, I managed to fix the Mac build! Here's the instructions to get it to work.

1. Download "tuin_macos.zip" (again) and unzip it by clicking.
   1. (If you open it now, it will say the file has been damaged. This is because it has been quarantined by MacOS. To fix it, do the following:)
2. Open Terminal (cmd+space -> type Terminal)
3. Type "cd Downloads" and hit Enter  to go to your downloads folder.
4. Type "xattr -d com.apple.quarantine ", leaving a space at the end.
5. Now drag the file (tuin.app) onto terminal where you left the space. This pastes the filename.
6. Press Enter to lift the quarantine.

You should now be able to play!

If it didn't work, try following the guide here: https://help.yoyogames.com/hc/en-us/articles/216753558

Sorry for the wait, I'm glad I managed to fix it though. Have fun!

- Ruben