:closed_lock_with_key:Arcade game machines, such as the A-L-L-S-U-X by Sega, are locked down with measures like BitLocker encryption, BIOS passwords, and always-online DRM to collect sales data and ensure revenue for the arcade operators.
:globe_with_meridians:Underground networks of hackers, enthusiasts, and preservationists work to make arcade games available in their regions, providing network support and updates to breathe new life into these games long after their official retirement.
:link:Private servers act as alternatives to official servers, offering drop-in replacements for arcade games. These servers require special hardware to decrypt and emulate the arcade machines, ensuring compatibility with the original software.
:joystick:Emulators like Techno Parrot allow newer arcade games to be played on a wide range of hardware, but they may lack online features and require manual configuration for optimal performance.
:cd:Game preservation is a concern with closed arcade ecosystems. Many arcade games, including unique events and additional content, are at risk of being lost forever if the underground networks supporting them shut down.