This is a newly codesigned build of the game, that should prevent issues with the game being reported as "damaged and can't be opened. You should move it to the Trash."

Or you can use the Itch.io launcher app to start the game.

Alternatively, follow these steps:

1. Go to Applications -> Terminal
2. Type in:
   xattr -r -d com.apple.quarantine
   but don't press Enter.
3. Drag the application to the Terminal window, this should add the path.
4. Press Enter.