An NFC file is a ROM (Read-Only Memory) image of a game cartridge for the Nintendo Family Computer (Famicom), the Japanese version of the Nintendo Entertainment System (NES). These files contain the complete data of the game, allowing users to play the game on emulators. NFC files are essentially digital copies of the original game cartridges. Emulators interpret the data within the NFC file and simulate the hardware of the Famicom, enabling users to experience classic games on modern devices. The NFC format is a relatively simple format, typically containing the game's program code, graphics, and other data necessary for gameplay. While the .nes extension is more commonly associated with NES ROMs, .nfc files serve the same purpose and are often interchangeable with .nes files. Using NFC files requires an emulator specifically designed to run Famicom/NES games. These emulators are available for various operating systems, including Windows, macOS, Linux, Android, and iOS (though iOS support can be more limited due to Apple's restrictions).