Overseas Sega Master System to Mega Drive Converter Adapter This is a converter adapter that allows you to play overseas Sega Master System games on a Mega Drive console or a Retro Freak. It is not compatible with the domestic Mark III because the cartridge shape is different. The item for sale is only the converter adapter shown in the image. The game software, Retro Freak, other consoles, and Mega Drive are not included. Boot-up has been confirmed on Mega Drive 1 and Mega Drive 2 consoles. It was also recognized without issue on Retro Freak, allowing for installation and gameplay. Cartridges like Everdrive are also recognized. *Although boot-up has been confirmed on the listed consoles, we do not guarantee operation on your specific console. Naturally, we do not guarantee that all overseas Master System games will boot up. Older Mega Drive consoles may have difficulty booting up. In such cases, please take measures such as maintenance or trying different game cartridges. We are unable to provide any support. More recent clone consoles or Retro Freak are likely to read the games more smoothly. This is recommended as the Gear Converter for Retro Freak is also not compatible with overseas Master System games. You can now easily play overseas Master System games on your Mega Drive or Retro Freak.