GameEx - Mac
GameEx is considered to be the most powerful, stable and feature rich gaming front-end (emulator launcher) for MAME, GameBase, Daphne, PC Games and all command line based game emulators, along with being a complete Home Theatre PC solution or plug in for windows media center. It’s designed to be used seamlessly with arcade controls and various arcade products and also has fully featured touchscreen and tablet support suitable to be used as a CarPC and touchscreen frontend. GameEx is available as a free or enhanced registered version.
Download file.
In Finder right click the application and select New Terminal at Folder
Copy and Paste all this into Terminal and press enter.
cd ..
chmod -R +x Mac_GameEx_ArcadeEdition.app/Contents/MacOS
chmod -R +x Mac_GameEx.app/Contents/MacOS
xattr -dr com.apple.quarantine Mac_GameEx_ArcadeEdition.app
xattr -dr com.apple.quarantine Mac_GameEx.app
Then launch the application.