Mac version is showing an error saying  "The application “Game.app” can’t be opened." in the latest 24.05.06 version

I dont know if this game uses MV or MZ rpg maker but apparently mv is no longer supported for mac after a certain macOS version so that could be why

Try to use "The Unarchiver" app from the Mac App Store. The default option to unpack the .zip of some mac system changes some file types automatically for whatever reason, and can cause such problems. It's a general problem, not really with the game itself.
The game is made in RPG Maker MV.