i have recently modded a Sega Saturn, What ive done: - Region free bios (Jap) - Phantom modchip - Semi 50/60Hz switch (I had brought this because a previous owner tried a mod but failed, but it has been locked into 60hz which I don't see much of a problem with is, though it will probably drop the price a bit) - One controller - A ll hookups needed for use and ofc replacement batteries