For macOS users getting the following error:
The application “Little Bartmares (MAC) FULLSCREEN 2.app” can’t be opened.
You'll need to enable the execute permission on the contained binary in order to run the game. Follow the directions below at your own risk.
Assuming you put the app in /Applications, you'll need to run this command in the Terminal application:
chmod +x "/Applications/Little Bartmares (MAC) FULLSCREEN.app/Contents/MacOS/Little Bartmares"
You'll also need to allow the application to run by opening the System Settings app, then selecting Privacy & Security and scrolling down to the Security section.
Look for the message that says:
"Little Bartmares (MAC) FULLSCREEN.app" was blocked to protect your Mac.
...and click the button that says Open Anyway.
You may be prompted for your password at this point. Providing it may pose a security threat, so again, do so at your own risk.
Enjoy!