A region-free ISO is a digital copy of a physical game disc, encoded in an .iso format that mirrors the original CD-ROM. For retro games like Kung Fu High Impact , region-free ISOs circumvent the hardware limitations of region-locked consoles (e.g., PlayStation, Xbox) by removing geographical restrictions. This innovation allows players to run the game on emulators or modded consoles regardless of their console's region. The availability of region-free ISOs signifies a blend of technical ingenuity and preservation, enabling broader access to titles otherwise buried in arcades or rare physical collections.