In many jurisdictions, it is legally permissible to create a personal backup copy (a ROM) of software you physically own. However, the mechanisms to do this (dumping) require specialized hardware, and the legality of downloading a ROM of a game you already own is often debated.
SNES ROMs are essentially digital copies of the games that were originally released on cartridges for the Super Nintendo Entertainment System. These ROMs are created by dumping the data from the original game cartridges onto a computer file, which can then be distributed and played on other devices using an emulator. download snes roms