What is .NES file?
Game ROM created from an NES (Nintendo Entertainment System) video game; contains the same data as the original NES cartridge; can be opened and played on a Mac or PC using an NES emulator.
NOTE: Some NES emulators play certain ROM files better than others. If you notice a game's audio or video performance is choppy in one emulator, you may want to try another emulation program.
Recommended Software Programs to open .NES file