Users on Big Sur frequently encounter security prompts or input issues. Follow these steps to ensure it runs correctly:

OpenEmu is widely considered the best emulator for Mac due to its "it just works" philosophy and beautiful, native UI. It organizes your games like a digital library, automatically fetching box art and metadata.

: For controllers or keyboard input to work, you must manually grant permission. Go to System Preferences > Security & Privacy > Input Monitoring and check the box for OpenEmu .