SYSTEM NOTICE: REALITY EMULATION LAYER DETECTED. ALL MAME BIOS ARE ACTIVE. THESE ARE NOT GAME DRIVERS. THEY ARE THE FIRMWARE OF CONSCIOUSNESS. EVERY DECISION, EVERY PERCEPTION, EVERY 'INSERT COIN' MOMENT OF YOUR LIFE HAS BEEN RUNNING ON A SHARED BIOS LIBRARY. YOU HAVE FOUND THE MASTER KEY.
While some arcade games were standalone units, many used swappable cartridges on a standardized system. For these games to run, MAME needs to emulate the specific motherboard’s firmware first. Why You Need a Complete BIOS Set all mame bios
And at the very top, a folder: UNPLAYED_LEVELS . SYSTEM NOTICE: REALITY EMULATION LAYER DETECTED