ROM is mainly used to store firmware, which is some form of software that runs computerized processes such as the games you play. It is a Nonvolatile Memory (NVM) used in computers, gaming consoles, and mobile devices. ROM is an abbreviation for Read-Only Memory. There are currently thousands of ROMs that you can download from gaming sites on the Internet. Video game ROMs are software programs normally installed on game cartridges. You have probably heard of ROM games, ROMs, and emulators but what exactly are they?