Mig Flash, formerly known as the Mig Switch, is a third-party accessory for Nintendo Switch and Nintendo Switch 2 consoles that allows users to play games from a MicroSD card that have been backed up from the console with the Mig Flash Dumper. Because there is no checking if the game has been obtained legitimately, Mig Flash allows the user to upload unlicensed ROM files to the console, enabling piracy and causing a series of litigations by Nintendo against individuals selling the device.